Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: gazjeep on February 20, 2012, 02:10:54 PM

Title: Stuttering TJ
Post by: gazjeep on February 20, 2012, 02:10:54 PM
Took the TJ out Saturday, started misfiring badly, pulled over, idled fine, revved it a bit to teach it some respect, then gradually built up revs, let it idle for a few mins then drove home without further issue.

Should add that it was upto temperature & it had done 15 miles previous without issue.

Thinking throttle position sensor & crank position senor could do with replacing as its 14 years old now.

Possible upstrems o2 sensor too.

Anybody got any favourable links for prices, gonna try dealer for prices too.
Title: Re: Stuttering TJ
Post by: isle of man on February 20, 2012, 02:39:52 PM
Not sure what year the TJ is but this happened to me on my early TJ's was the cap and rotor - the Mafia has electikerty.
Title: Re: Stuttering TJ
Post by: Panic mechanic! on February 20, 2012, 03:20:02 PM
throttle body needs polishing lol or the injectors are mer'd up
Title: Re: Stuttering TJ
Post by: Bishops Finger on February 20, 2012, 03:55:09 PM
Suspect CPS your lordship
Title: Re: Stuttering TJ
Post by: gazjeep on February 20, 2012, 06:09:48 PM
Not sure what year the TJ is but this happened to me on my early TJ's was the cap and rotor - the Mafia has electikerty.

Tis a 98 H  :icon_winkle:

Indeed, memo to self, got a new set of leads, dizzy cap & rotor arm in the garage somewhere, about time I dug em out & fitted then as a 1st step, had them that long I forgot about them  :icon_redface:
Title: Re: Stuttering TJ
Post by: MOCAJ on February 20, 2012, 06:15:44 PM
my blue truck has a misfire, so far changed upstream oxy but no different, do you get a load noise from the snorkie when its missing ?
Title: Re: Stuttering TJ
Post by: gazjeep on February 20, 2012, 06:22:15 PM
It only did it for a few hundred yards before I pulled over, started coughing & missing like it was running out of fuel, was making the drive train clunk a bit as it died & then recovered. As soon as I eased off it smoothed out, then did it again as I applied the right foot.

Pulled over, put into nuetral, revved it a bit, idled fine, checked under the bonnet, blipped it a bit more, then slowly raised the revs to 2.5k all seemed ok. Drove 12 miles home no probs.

Thought about damp as I had had the jet wash out earlier but had driven 15 mile to old chaps before hand with no issues.

Will change the leads etc first, probably look to get CPS & TPS changed due to age more than anything.

Would like to get MOPAR bits, but depends on price, wide range when i had a quick look last night
Title: Re: Stuttering TJ
Post by: MOCAJ on February 20, 2012, 06:27:41 PM
lighthouse were cheaper than dealers but crown parts

swap them leads and stuff first, damp maybe, but if you have a new set just chuck em on anyways mate  :greggmo:
Title: Re: Stuttering TJ
Post by: gazjeep on February 20, 2012, 07:35:40 PM
Yep  :icon_jook:
Title: Re: Stuttering TJ
Post by: Dave69 on February 20, 2012, 09:21:48 PM
pop the dizzy cap and clean the contacts with fine emery cloth, another reason why not to jet wash an engine
Title: Re: Stuttering TJ
Post by: gazjeep on February 20, 2012, 10:20:32 PM
 :iagree: Didnt jet wash the engine, just the arches & chasis but no doubt a bit could have got up the inside of the engine bay  :icon_winkle:
Title: Re: Stuttering TJ
Post by: Bishops Finger on February 20, 2012, 10:57:31 PM
:iagree: Didnt jet wash the engine, just the arches & chasis but no doubt a bit could have got up the inside of the engine bay  :icon_winkle:

Slacking there sir....
Title: Re: Stuttering TJ
Post by: MM on March 05, 2012, 05:14:20 PM
OK to the Wrangler decided to play up with the wrong person today!!!!

Pulled away from an island in drive, up hill so needed some acceleration, at first no power (scary) then stuttering and a loud knocking noise from underneath, almost like it was trying to find a gear.  As I had a BMW up my arse I had to try to accelerate to give myself space to indicate to pull over with out the idiot shunting me from behind!

Pulled over and put it into neutral, went in to neutral no probs, let it run for a few mins, pumped the accelerator a few times and seemed to be OK.  Put it into drive, again no probs with the actual gear change, and pulled away in drive and she was fine.

Got home and started to reverse down the drive.  Our drive is on a downward slope so the foot brake is applied and not the accelerator.  As I was reversing down the drive the jeep started to rev itself, short revs not one constant one.  My foot was no where near the accelerator.  Stopped in front of the garage door and put the jeep in to park and for a few seconds after, the jeep was still doing short sharp revs then fell back to a smooth rev due to being in neutral.

Your technical diagnosis is much appreciated Birties - please

Could it be the gear box, accelerator cable or something more sinister
Title: Re: Stuttering TJ
Post by: Delk on March 05, 2012, 06:49:20 PM
My tj gave trouble with fuel pump once. It would run fine then studded and loose power at very inappropriate times! The pump would loose pressure once in awhile and never gave a code or any other sign. Only Way I found it was by putting a pressure gauge on the fuel manifold and driving around.

At the time I was commuting past Cambridge on Friday evenings and it wasn't a fun experience in traffic.

Title: Re: Stuttering TJ
Post by: MOCAJ on March 05, 2012, 07:07:24 PM
if you do the ignition on off on off on trick do you get any codes ?

i also have a full code reder here if you can limp over to the ditch  :greggmo:
Title: Re: Stuttering TJ
Post by: gazjeep on March 05, 2012, 08:41:03 PM
Have been out & checked for error codes as per http://www.wranglerforum.com/f5/tj-error-codes-358.html (http://www.wranglerforum.com/f5/tj-error-codes-358.html)

All stages gone thru for the sentry system as described but no error codes at all.

Steve, would your scanner pick up anything else ?

Got to be honest, havent changed the leads & dizzy cap yet as it was all a bit tight, didn't want to bugger anything up & TBH have been busy with family stuff over the weekend with more to come.

Seems like I will have to bite the bullet & get it in the garage one night this week.

Bloody MOT due too FFS  :banghead:
Title: Re: Stuttering TJ
Post by: MOCAJ on March 05, 2012, 08:46:51 PM
bring it over one night in the week and i will plug it in or even better, im off tomoz so bring it in your dinner  :greggmo:
Title: Re: Stuttering TJ
Post by: gazjeep on March 05, 2012, 08:54:13 PM
Cheers Steve

Do you think I should have a go at the leads first ?

Work stupid busy at the mo, got major QA audits this week & next, will try & bring it over one night if thats ok ?
Title: Re: Stuttering TJ
Post by: MOCAJ on March 05, 2012, 08:59:16 PM
drop it off here in the morning with your new leads and dizzy cap, i will drop you at work and pick you up later

i get up at 6
Title: Re: Stuttering TJ
Post by: gazjeep on March 05, 2012, 09:01:51 PM
I'll give you a ring in a mo  :icon_super:
Title: Re: Stuttering TJ
Post by: Bishops Finger on March 05, 2012, 10:05:55 PM
It sounds like every problem my TJ has displayed....together...
Title: Re: Stuttering TJ
Post by: scrw on March 05, 2012, 10:13:02 PM
did you swap out the TPS? Cleaned the ICV aswell?
Title: Re: Stuttering TJ
Post by: gazjeep on March 06, 2012, 07:09:16 PM
Jeep drove home sweet as a nut, many thanks to MOCAJ  :icon_jook:

Now found a new problem, sodding radiator leaking  :banghead: :banghead:

Radiator place round the corner from work has quoted £154 + VAT to re-core. Opinions please.

 
Title: Re: Stuttering TJ
Post by: Panic mechanic! on March 06, 2012, 07:26:14 PM
not a bad price to be honest I was quoted over £200 for the wj  one. The cheap ones you get off ebay fail quickly so I would not buy one of them.
Title: Re: Stuttering TJ
Post by: MOCAJ on March 06, 2012, 07:28:16 PM
sounds reasonable price Gaz, is that to rebuild what you have with a new core ?

good to hear you had no moments on the way home, been researching that code that came up P0463 and the fix is new petrol cap as the seal is gone or fuel pump, obvs cap is cheapest and first to go for

i would run it for a week or so then re-scan to see if that ones gone   :icon_winkle:
Title: Re: Stuttering TJ
Post by: scrw on March 06, 2012, 07:32:49 PM
so areyou coming out to play on sunday then?
Title: Re: Stuttering TJ
Post by: bigjeepzj on March 06, 2012, 07:37:19 PM
not a bad price to be honest I was quoted over £200 for the wj  one. The cheap ones you get off ebay fail quickly so I would not buy one of them.

The cheap Ebay ones are crap and will leak
Get a re-core from the blokes round the corner and if it leaks again you can shout at some one

Title: Re: Stuttering TJ
Post by: gazjeep on March 06, 2012, 08:29:52 PM
Yep, that price is to re build the current one.

Only fag is they you have to remove the rad from the car & take rad to them, they dont remove & re-fit anymore.

Good news is they are only 100 yds from work  :icon_winkle:
Title: Re: Stuttering TJ
Post by: Nosebolt on March 06, 2012, 09:04:57 PM
thats about right, but see if you can get them to fit an extra core, will help with static cooling when off road although don't know if the electricery will be affected, when I took the CJ from 2 core to 3 core there was only a £20 price difference, well worth it
Title: Re: Stuttering TJ
Post by: Bishops Finger on March 06, 2012, 10:03:15 PM
Gaz...is it leaking from the cores or the plastic top?   If the latter best bet is to source a new RHD rad..they are a weak point on TJ's...easy done.....even Ive managed it....
Title: Re: Stuttering TJ
Post by: Jonny Jeep on March 07, 2012, 08:14:59 PM
Considering that recore price (£154+VAT = £184.80) I'd be looking at a brand new one. I got one a few weeks ago from a local car spares shop. £190 for a Nissens. It's a bigger single core, alli with plastic tanks, like Jeep switched to in later TJs rather than twin core like early TJs. I can see from my scan gauge that it cools better than the twin core rad I did have fitted.
Title: Re: Stuttering TJ
Post by: gazjeep on March 08, 2012, 07:53:51 PM
Bit of an update for everyones info, here's the e-mail I received when I enquired about new hoses for the TJ from local Hereford & Worcester Jeep dealer.

Scary that some bits are not available.

Oil Cooler Return Hose
 
33004037        Clip            £4.81 + vat        (Italy)
52079895AA   Fitting Kit    £21.85 + vat
52118606AB   Hose           £35.47 + vat       (Italy)
 
Oil Cooler Supply Hose
 
52079688AB    Hose        £69.85 + vat
52079895AA    Fitting Kit  £21.85 + vat        (Italy)
 
Bottom Hose
 
052028144        £51.93 + vat           (No Delivery Date)
 
Top Hose
 
Not supplied by Chrysler/Jeep any Longer
 
Heater Supply Hose
 
55036380AC    £30.42 + vat        (No Delivery Date)
 
Heater Return Hose
 
55036382AD    £60.22 + vat        (Italy)
 
Throttle Sensor       
 
04874371AC    £64.13 + vat
 
Crank Sensor   
 
04897321AA    £114.46 + vat

Some of these parts will take about 5 working days to get hold of due to them having to come from Italy. There is also 2 parts which are not showing in Chrysler's stock in either the UK or Italy. This means I would be unable to supply a delivery date. I have marked all these next to the above part numbers and prices. Tht Top Radiator hose is something that Chrysler now no longer supply.

Title: Re: Stuttering TJ
Post by: isle of man on March 08, 2012, 07:58:18 PM
Mamna mia!!!!
Title: Re: Stuttering TJ
Post by: MOCAJ on March 08, 2012, 08:04:31 PM
Mamna mia!!!!

you on the pasta peter ???
Title: Re: Stuttering TJ
Post by: isle of man on March 08, 2012, 08:11:46 PM
Mamna mia!!!!

you on the pasta peter ???


Steve - since the break up from Daimler all shipments are from Italy - this can not be good news!!!
Title: Re: Stuttering TJ
Post by: MOCAJ on March 08, 2012, 08:16:32 PM
i already know, been after a few bits recently and all 2 days away minimum

and rear light units, not stocked anymore ffs. good job there was some in germany but not from a dealer

and service from the dealers seems like they could not give a f....., doesnt help that my local dealer guys who i knew well are gone to the wall
Title: Re: Stuttering TJ
Post by: gazjeep on March 09, 2012, 06:20:38 PM
While I have the info to hand for folk, new radiator from Jeep is £313.00 + VAT

Title: Re: Stuttering TJ
Post by: Jonny Jeep on March 09, 2012, 08:52:38 PM
I got my bottom hose from the dealer when I did my radiator not entirely sure what I paid but it was the only place that seemed to have them anyway. Top hose I used is a LHD hose off ebay for £18.50 ish It jsut needed a bit trimming from the radiator end to fit. http://www.ebay.co.uk/itm/GENUINE-JEEP-WRANGLER-UPPER-RADIATOR-HOSE-P-N-52028264AB-/320842689677?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4ab3b6ec8d (http://www.ebay.co.uk/itm/GENUINE-JEEP-WRANGLER-UPPER-RADIATOR-HOSE-P-N-52028264AB-/320842689677?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4ab3b6ec8d)

I'll bet the rad from Jeep is very similar to the Nissens I got for half the dealers price.
Title: Re: Stuttering TJ
Post by: gazjeep on March 10, 2012, 10:05:12 AM
Jonny, did you order direct from Nissenns or stockist ?

Clicky Linky would be nice  :003:
Title: Re: Stuttering TJ
Post by: Jonny Jeep on March 10, 2012, 08:56:28 PM
No website, just the car shop we've used for years. Alan Quine Ltd, 253 Parr Lane, Unsworth, Bury, Lancashire, BL9 8LX.

I went up to the shop, they phoned their supplier and then said it would be £200. I didn't know what brand it would be till it turned up. Went back the next day and it was a Nissens for £192.

The LHD upper hose I used worked fine with 1 3/8" trimmed from the radiator end.

(https://birtydastards.com/frm/proxy.php?request=http%3A%2F%2Ffarm8.staticflickr.com%2F7148%2F6784191639_e19d47f2c7_b.jpg&hash=80812142dd568da0b9b83390328b8a29ad66d77d)
Title: Re: Stuttering TJ
Post by: Bishops Finger on March 11, 2012, 12:40:11 AM
Try Pirtek????


Oh and Dodster got some silicone hoses off ebay.....

Maybe Demon Tweaks Jeepey etc etc...
Title: Re: Stuttering TJ
Post by: gazjeep on March 11, 2012, 09:46:25 AM
Cheers chaps.

Waiting on the ebay supplier for price for all hoses & lighthouse on Monday
Title: Re: Stuttering TJ
Post by: gazjeep on March 12, 2012, 01:29:13 PM
OK,

Any body think these are a bad idea, not the colour, the actual hoses as they are by far the cheapest & more importantly available option

http://www.ebay.co.uk/itm/150661101907?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 (http://www.ebay.co.uk/itm/150661101907?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)

Cheers

Title: Re: Stuttering TJ
Post by: Panic mechanic! on March 12, 2012, 01:32:25 PM



silly as it sounds have you tried mansfield 4x4? I got a top hose for teh wj for £12 and the bottom hose was similar in price.
Title: Re: Stuttering TJ
Post by: bgbazz on March 12, 2012, 01:41:26 PM
Gaz

quite a few blokes in OZ are using those silicon hoses now and they reckon they are very good.
Title: Re: Stuttering TJ
Post by: Dodster on March 12, 2012, 02:03:57 PM
Those are the ones I have Gaz, but I only had the top and bottom hose. I blew a top hose at Tong and G-force had a stall there with them, so got me out the shiet..
I havent fitted the bottom one yet but so far no probs with the top one. :greggmo:
Title: Re: Stuttering TJ
Post by: gazjeep on March 12, 2012, 02:25:51 PM
Cheers chaps  :icon_super:

Ringing various Jeep dealers, Lightys, local factors & parts places, they all come in about £200 + & not all are available so at £140 for the whole set seems the way to go.   

Thanks again guys  :icon_winkle:
Title: Re: Stuttering TJ
Post by: gazjeep on March 21, 2012, 12:28:06 AM
Just to hopefully finish this off & give a heads up to others.

Rad sorted & new hoses fitted except the bottom rad hose.

In all inocense, the kit from the eBay seller was fine except for the bottom hose, totally different shape for our January 98 TJ. The guy was a bit surprised but offered up the bottom hose to a 97 TJ he had & agreed that it was in fact very different.

All being well, I will be getting a refund or he has even offered to replace with a standard part so a happy conclusion hopefully.
Title: Re: Stuttering TJ
Post by: Bubba on March 21, 2012, 09:48:49 AM
result well done major
Title: Re: Stuttering TJ
Post by: gazjeep on March 21, 2012, 07:51:42 PM
Kept the old pipes for those just in case moments, more crap in the garage  :003:
Title: Re: Stuttering TJ
Post by: gazjeep on May 29, 2012, 01:45:55 PM
The bloody hunting revs are back again.

With engine idling in the MJS garage on Saturday, damn thing started "hunting", had another little moment on its test run & then just as I strted on the way home.

Then 20 + miles on the motorway without missing a beat.

Had a look at 02 sensors on Rockauto as they seem cheap but aint got a frigging scooby which bloody parts I should be ordering, too much choice ...... help !!
Title: Re: Stuttering TJ
Post by: Cockney Boy on May 29, 2012, 03:48:47 PM
Get a scan done ASAP to see what's causing it again. STEVE !!!!
Title: Re: Stuttering TJ
Post by: MOCAJ on May 30, 2012, 07:25:13 AM
I will scan it at the pub on  Saturday if you can get there, or you can borrow it and return at the pub. Txt me Gaz
Title: Re: Stuttering TJ
Post by: gazjeep on May 30, 2012, 01:23:35 PM
Oops, post / texting time interface mismatch  :003:

See you later matey & ta lots  :icon_jook:
Title: Re: Stuttering TJ
Post by: JamesH on May 30, 2012, 05:29:25 PM
Check the crankcase vents - the front one is fresh air feed in from the airbox and the rear vents to the manifold. This and vacuum / air leaks can cause the same symptoms (well did on my XJ for a bit amongst other problems I was having). Mine showed up as O2 sensors reading high voltage - rish condition. Changing the O2 sensors just gave the same result which made me look elsewhere. My front fresh air feed into the crankcase was blocked.
Title: Re: Stuttering TJ
Post by: gazjeep on May 30, 2012, 10:18:40 PM
Thanks to MOCAJ for the loan of the scanner

Fault code P0463 showing up

Found the following

P0463 Fuel Level Sending Unit Volts Too High Fuel level sensor input above acceptable voltage.

Seems that it could be an issue with the fuel level sender perhaps ?

Any & all ideas gratefully received, Fuel gauge has always been a bit pesimistic, full of crap between fuel tank skid & tank ? new sender unit ? tank off ? where from ? how much etc etc

Dr Mike help !!
Title: Re: Stuttering TJ
Post by: Panic mechanic! on May 30, 2012, 10:25:56 PM
when was the last time you changed your fuel filter? (by the tank)
Title: Re: Stuttering TJ
Post by: Panic mechanic! on May 30, 2012, 10:33:19 PM
and silly as it sounds, I wonder if you got contaminated fuel.
Title: Re: Stuttering TJ
Post by: scrw on May 30, 2012, 10:49:55 PM
earths around sender/fuel pump?
Title: Re: Stuttering TJ
Post by: gazjeep on May 30, 2012, 11:15:08 PM
Well if its not a bad earth or crap think I have found the whole shooting match here

http://www.rockauto.com/catalog/moreinfo.php?pk=293400 (http://www.rockauto.com/catalog/moreinfo.php?pk=293400)
Title: Re: Stuttering TJ
Post by: Mike Pavelin on June 02, 2012, 11:22:22 PM
It would be worth carefully inspecting the wiring to the fuuel sender, as it shares a common return line to the PCM used by all the engine sensors, there's a chance a fault here could disrupt a whole load of stuff.
Title: Re: Stuttering TJ
Post by: gazjeep on June 02, 2012, 11:29:49 PM
Cheers Doc, Tank off then ?

If nothing obvious, would the process of elimination be new fuel pump, then TPS, then CPS, then o2 censors in that order ?
Title: Re: Stuttering TJ
Post by: Bishops Finger on June 02, 2012, 11:38:36 PM
Oh dear....
Title: Re: Stuttering TJ
Post by: scrw on June 03, 2012, 12:06:40 AM
Has Stew laid his hands on ya jeep?

I'd do pump first, or if you can replicate the issue get a multimeter on it and get the fuel pressure checked
Title: Re: Stuttering TJ
Post by: Bishops Finger on June 03, 2012, 12:51:46 AM
Tank out aint pleasant....especially with a skid plate...apparantly...
Title: Re: Stuttering TJ
Post by: Panic mechanic! on June 03, 2012, 03:39:20 PM
Cheers Doc, Tank off then ?

If nothing obvious, would the process of elimination be new fuel pump, then TPS, then CPS, then o2 censors in that order ?

I have a scanner here that can check the 02' sensors are working.
Title: Re: Stuttering TJ
Post by: gazjeep on June 03, 2012, 07:36:10 PM
Cheers Rob, is that a different affair to the scanner you plug in under ther steering to generally find fault codes ? Something special for o2 scanners only ?

I have borrowed Steve's scanner which is where I got the fault code from.
Title: Re: Stuttering TJ
Post by: isle of man on June 03, 2012, 07:39:43 PM
Does it hunt when cold? Because the O2 does not become live untill engine reaches normal temperature.
Title: Re: Stuttering TJ
Post by: gazjeep on June 03, 2012, 07:42:46 PM
Nah only when its warm H & then only intermitently, last time just after setting off from MJS, had a momment then drove 25 miles on motorway no probs
Title: Re: Stuttering TJ
Post by: isle of man on June 03, 2012, 07:50:32 PM
If I was to guess O2 would be 2:1
Title: Re: Stuttering TJ
Post by: Panic mechanic! on June 03, 2012, 07:58:58 PM
Cheers Rob, is that a different affair to the scanner you plug in under ther steering to generally find fault codes ? Something special for o2 scanners only ?

I have borrowed Steve's scanner which is where I got the fault code from.

all scanners have different functions, this one can read live data on various part of the engine.
Title: Re: Stuttering TJ
Post by: isle of man on June 03, 2012, 08:03:11 PM
So are you saying MOCAJ scanner is TAT?
Title: Re: Stuttering TJ
Post by: Panic mechanic! on June 03, 2012, 08:07:57 PM
nope, as I said all scanners are diffferent in what they scan..... he probably has some things this one can't scan,I even have winstar but not sorted out how to use that yet.
Title: Re: Stuttering TJ
Post by: gazjeep on June 03, 2012, 11:46:28 PM
Cheers Rob, I'll give you a shout mate ta.

Bloody elastictrickery  :banghead:
Title: Re: Stuttering TJ
Post by: Bishops Finger on June 04, 2012, 12:14:00 AM
Hmm IIRC scanner didnt pick up fuel pump issue on TJ ...took removal to find problem the late Mr Gasser told me it wasnt a common problem on TJs...Its a fuelling issue....take it for a blast...
Title: Re: Stuttering TJ
Post by: gazjeep on June 06, 2012, 11:51:30 AM
Bitten the bullet & ordered TPS & O2 sensors from Rockauto.

Then its fitment & Tank off time  :icon_rolleyes: do it once & do it all
Title: Re: Stuttering TJ
Post by: wildwood on June 06, 2012, 02:19:18 PM
The tank is heavy when overhead even when you think it is empty....still has 1or so gall....Armour on tank and even worse.

I placed 4 axle stands at edges and trolley jack in centre....... Drop by 6-9 inches and then pull wires and pipes......
also to get rid of pressure remove fuel relay and restart till stall
That way you won't get 30psi of unleaded in the moosh .......

Sure you know all that but felt the need to mention :icon_super:
Title: Re: Stuttering TJ
Post by: scrw on June 06, 2012, 04:32:58 PM
Don't forget the wheelbarrow!!!  Pete's contribution to jeepin  :greggmo:
Title: Re: Stuttering TJ
Post by: gazjeep on June 06, 2012, 06:33:32 PM
Cheers Jez, definately an MJS affair for tank business, thanks for the heads up.

SCRW  :hysterical: :hysterical: how could we forget  :icon_super: