Topic: Stuttering TJ (Read 20444 times)

gazjeep · « **Reply #50 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 !!

Cockney Boy · « **Reply #51 on:** May 29, 2012, 03:48:47 PM »

Get a scan done ASAP to see what's causing it again. STEVE !!!!

MOCAJ · « **Reply #52 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

gazjeep · « **Reply #53 on:** May 30, 2012, 01:23:35 PM »

Oops, post / texting time interface mismatch

See you later matey & ta lots

JamesH · « **Reply #54 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.

gazjeep · « **Reply #55 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 !!

Panic mechanic! · « **Reply #56 on:** May 30, 2012, 10:25:56 PM »

when was the last time you changed your fuel filter? (by the tank)

Panic mechanic! · « **Reply #57 on:** May 30, 2012, 10:33:19 PM »

and silly as it sounds, I wonder if you got contaminated fuel.

scrw · « **Reply #58 on:** May 30, 2012, 10:49:55 PM »

earths around sender/fuel pump?

gazjeep · « **Reply #59 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

Mike Pavelin · « **Reply #60 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.

gazjeep · « **Reply #61 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 ?

Bishops Finger · « **Reply #62 on:** June 02, 2012, 11:38:36 PM »

Oh dear....

scrw · « **Reply #63 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

Bishops Finger · « **Reply #64 on:** June 03, 2012, 12:51:46 AM »

Tank out aint pleasant....especially with a skid plate...apparantly...

Panic mechanic! · « **Reply #65 on:** June 03, 2012, 03:39:20 PM »

Quote from: 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 ?

I have a scanner here that can check the 02' sensors are working.

gazjeep · « **Reply #66 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.

isle of man · « **Reply #67 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.

gazjeep · « **Reply #68 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

isle of man · « **Reply #69 on:** June 03, 2012, 07:50:32 PM »

If I was to guess O2 would be 2:1

Panic mechanic! · « **Reply #70 on:** June 03, 2012, 07:58:58 PM »

Quote from: 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.

all scanners have different functions, this one can read live data on various part of the engine.

isle of man · « **Reply #71 on:** June 03, 2012, 08:03:11 PM »

So are you saying MOCAJ scanner is TAT?

Panic mechanic! · « **Reply #72 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.

gazjeep · « **Reply #73 on:** June 03, 2012, 11:46:28 PM »

Cheers Rob, I'll give you a shout mate ta.

Bloody elastictrickery

Bishops Finger · « **Reply #74 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...

Author Topic: Stuttering TJ (Read 20444 times)

Cockney Boy

Panic mechanic!

Panic mechanic!

scrw

Mike Pavelin

Bishops Finger

scrw

Bishops Finger

Panic mechanic!

Panic mechanic!

Panic mechanic!

Bishops Finger