Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: mrtibbs on November 16, 2012, 02:25:52 PM

Title: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 16, 2012, 02:25:52 PM
Hi all
When we were returning home from Bournemouth on Monday, about 1/2 an hour into the journey Sharon suddenly noticed that we had lost power (she was driving obviously...:)) and the car seemed to have lost power. No lights came on the dashboard and the engine ran fine, just felt as though there was no turbo, massive power loss. Everything else was fine. We drove on for a while to see if the fault would clear itself but it did not. Eventually we pulled into a service area to use the loo and when we restarted the car, the fault had cleared and we drove the rest of the way home without problems....
It drove fine on Tuesday when I drove it a short distance and yesterday I drove it to Saffron Waldon without the problem showing up, however about 20 minutes into the return journey it dumped power and felt like it had gone into a limp home mode, and it struggled to reach 60MPH :(. I switched it off and restarted the engine straight away and everything was back to normal all the way home, no problems.
Can anyone point at what could be causing this please?
Thanks in advance

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lukemagnum on November 16, 2012, 02:46:42 PM
Have you got any fault codes stored in the ECU?
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 16, 2012, 03:40:30 PM
Hi Luke
I have no way of getting the codes out, so I don't know. Sorry...

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: gazjeep on November 16, 2012, 04:05:30 PM
Need to get an OBD 2 scanner plugged in & see what it tells you  :icon_winkle:
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lornaben on November 16, 2012, 04:11:35 PM
 :iagree:

The brain is obviously deciding it needs to do something so it should record its decision ....

Elektrickery, don't ya just love it  :011:
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: gazjeep on November 16, 2012, 04:15:30 PM
Post up the fault code / codes & some clever smart arse will be able to give you a pointer  :icon_winkle:
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lukemagnum on November 16, 2012, 04:20:01 PM
Switch your ignition on 4 times in quick succession then leave it on. Any codes will come up in the odometer display.
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: wildwood on November 16, 2012, 04:46:03 PM
Had this prob on a Ford diesel C Max and,after loads of people not knowing was the actual turbo that was at fault

Something about the vanes not doing what they should and therefore no boost and ...... Then OK for a few days....
started 3 years ago and only happened about twice a year so difficult to diagnose until it became regular occurrence...

turbo replacement.....job done ........ So was my wallet.... :icon_twisted:

Hope Tis not the same on yours but thought I better give you the heads up just in case
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Dutch on November 16, 2012, 05:22:00 PM
like it had gone into a limp home mode, and it struggled to reach 60MPH

Limp home mode on the grand 2.7 CRD is 2nd gear 20 mls. max so you don't have that.

As said above key in ignition on/off for 4 (or5) times in quick succession and see what the odo says.
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 16, 2012, 05:44:31 PM
Switch your ignition on 4 times in quick succession then leave it on. Any codes will come up in the odometer display.
Hi Luke
Tried that trick but no good, just get the gear range and mileage displayed???
Thanks for your (and all the others) help though, I will try to find someone local that has an OBD2 scanner that will help me...

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Dutch on November 16, 2012, 05:46:32 PM
Keith what grand is it WJ or WK.

the key trick is for the WJ. Dunno if its the same for WK.
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 16, 2012, 06:34:17 PM
Hi Dutch
Stupid of me I guess, I should have said.... Not sure but I think it is a WK. It is a 2005 3.0 CRD, it is the newer (not the newest....) Grand with the Mercedes engine....

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lukemagnum on November 16, 2012, 06:57:12 PM
Yours is a WK then.

Haven't tried it as mine is the earlier WJ, switching it 3 times should do your model and it should show in the digital display in the tacho.

Lets us know!!
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: cleggy on November 16, 2012, 10:20:19 PM
This happend to mine same year the tubo pipe leaked on to something (can't remember what) stealership sorted it out about £300ish
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Jeepjedi on November 17, 2012, 12:54:23 AM
my scanner off fleablag 20 squid, can cancel codes too

to get the codes up on the dash ode Off-On-Off-On-Off-On with the key, displays code then done.  When i say on, thats to the dash lights not start it up, so off position on to lights 3 times last on leave it there and up come codes, post the code i have em all
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 17, 2012, 08:42:16 PM
my scanner off fleablag 20 squid, can cancel codes too

to get the codes up on the dash ode Off-On-Off-On-Off-On with the key, displays code then done.  When i say on, thats to the dash lights not start it up, so off position on to lights 3 times last on leave it there and up come codes, post the code i have em all

Hi
I just went out and switched the ignition on 3 times in quick succession but got no codes, just the display telling me my MPG....
I switched it On-Off-On-Off-On and left it till all the warning lights were out but nothing changed on the display at the bottom of the rev counter.
Thanks for the help though :(

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Panic mechanic! on November 17, 2012, 09:15:33 PM
where do you live?
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 17, 2012, 10:48:31 PM
Kettering, Northants.

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Panic mechanic! on November 17, 2012, 10:52:16 PM
shame you are not a bit closer to brum there are a few of us with obd readers, who could have  plugged them in. might be as cheap to buy one yourself rather than come here
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: greggmo on November 17, 2012, 11:10:40 PM
is it going ok now or still the same? do these have a dpf fitted? when was it last serviced?
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 18, 2012, 05:05:10 AM
Thanks for the response. It was working OK when I last drove it, but this seems to be an intermittent thing. It has happened twice now and then only after driving it for a few miles so I can't seem to just jump in and replicate it at will. Sorry I don;t know what a "dpf" is. It was serviced about a year ago now, but not by a Jeep dealer or specialist.

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: daggie on November 18, 2012, 07:22:06 AM
there is a jeep specialist in northampton,
I'll get their no off me dad cos they have my dads crd which has ISSUES :banghead:
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: gazjeep on November 18, 2012, 10:00:57 AM
dpf = diesel particulate filter.

Its a system that alledgedly cleans up the emmisions. Supposed to collect all the soot from the exhaust & then when its fills up, on a decent run over say 20 mins while everything is up to temp, burns it up & blows it out of the exhaust.

Beets me how collecting the crap & dumping it in one go as opposed to just letting it out is more "green" but there you go.

Sometimes if you only do short journeys, they get bunged up as they dont get hot enough to blow it out.

Or something like that  :003:
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lukemagnum on November 18, 2012, 10:52:59 AM
Apparently the DPF collects the soot or carbon and burns it off into CO2 on a long run to clear it.

Ironically, the Government doesn't give a shit about how much carbon you produce, but that didn't stop them robbing the best part of £600 from me in VED because they think that me and my two motors throw out more CO2 than your average rep pounding up the motorways in their eco-friendlys!




BTW, nothing against all you hard working sales reps, my beef is with the Government who get their facts wrong and pick on the wrong people.

Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: daggie on November 18, 2012, 04:36:58 PM
tcj
79 BUNTING ROAD, KINGSTHORPE, NORTHAMPTON, NORTHAMPTONSHIRE , NN2 6EE
01604 722700
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 18, 2012, 05:52:39 PM
Thanks guys....:) I will give TCJ a call next week if my mate can't sort it, I am going to plug it into his £3K laptop system tomorrow :)
I'll let you know how I get on...

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 19, 2012, 05:35:36 PM
I got it plugged into a little code reader today and no faults showed  :jpshakehead:
I will get it plugged into a better machine tomorrow and see if anything shows itself...

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: dieselj20 on November 19, 2012, 06:07:25 PM
had a similar fault on a 2.7 crd it turned out to be the hi presser fuel pump
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 20, 2012, 12:09:42 PM
OK my mates laptop collected the following information:

ECU       Code           Description
E8          P2015         Intake Manifold Runner Position Sensor/Switch Circuit Range/Perf (Bank 1)

02   DTC that caused freeze frame data  =  P2015
04   Calculated Load Value                    =  48%
05   Engine Coolant Temperature            =  29.0 deg C
OB   MAP Sensor                                  =   120kPa
OC   Engine Speed                               = 1690 rpm
OD   Vehicle Speed                              =  44 MPH
OF    Intake Air Temperature                 = 11.0 deg C
10    MAF Sensor                                 = 42.2 g/s
23   Fuel Rail Pressure                          = 61930 kPa

I hope that this will mean something to someone and that they can help point to a possible cause. Maybe a bad connection or a broken device?
Thanks in advance.

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lukemagnum on November 20, 2012, 02:10:22 PM
The intake manifold runner is a set of flaps on the intake which partially close at low revs to swirl the air to improve combustion.

Looks like yours are sticking partially closed restricting the air which explains lack of power.

As its intermittent they could be gummed up or worn, either way they need to be inspected.

A main agent will probably want to sell you a new set.

If it keeps repeating itself it will probably bring up the MIL lamp (Check Engine).

Hope this points you in the right direction.
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 20, 2012, 04:56:20 PM
Thanks for that Luke. Does anyone know how to get to these Intake Manifold Runners? Maybe someone has a picture showing where they are. I would like to pull them off and clean them up if possible.
Thanks in advance

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Jonny Jeep on November 20, 2012, 10:53:52 PM
This may help. don't know what year your GC is.
http://www.justanswer.com/jeep/6e0zf-jeep-grand-cherokee-limited-2007-grand-cherokee.html (http://www.justanswer.com/jeep/6e0zf-jeep-grand-cherokee-limited-2007-grand-cherokee.html)
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Dutch on November 21, 2012, 09:17:16 AM
Hi Dutch
Stupid of me I guess, I should have said.... Not sure but I think it is a WK. It is a 2005 3.0 CRD, it is the newer (not the newest....) Grand with the Mercedes engine....

Keith

 :017:
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: Lukemagnum on November 21, 2012, 11:12:26 AM
I've got a manual for a 2006 Dodge Sprinter which has a section for the 3.0 CRD. It's got an exploded view of the manifolds and shows the IMR to be a small unit on top. If you've got to pull alot off to get to it it may be worth just replacing it if its not too expensive.

Let me know you want a copy, I'll email it.

The runners or swirl flaps fitted to diesels that I’m familiar with are butterfly valves for each port. The IMR here looks like the one fitted to petrol engines which work by effectively changing the volume of the intakes, so I can’t see how this one would restrict power at high revs. Maybe someone knows more about the Jeep ones?
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on November 21, 2012, 01:32:53 PM
Hi Luke
That is great thanks, a copy of that manual would be helpful (I think...) I will PM my email address.
The car is booked into our local Jeep Indie TCJ in Northampton for Dec 3rd for a check over. I hope that they find more than just the code that I already have otherwise it will be a waste of time and money. They did suggest today on the phone that it may not be the swirl motor, although that was the likely suspect, because there are so many other interrelated issues that could throw up that code.
I am not hopeful to be honest, as my luck is just not that good :)
I think it will end up being a swirl motor change and I think I will ask them about the "Elephant Hose Mod" and ask if they can do that while it is in.
Thanks all you guys for all the help and advice

Keith
Title: Re: Grand Cherokee CRD intermittant power loss, help please?
Post by: mrtibbs on December 07, 2012, 01:44:04 PM
Well I can report that the swirl motor was the issue and it has been replaced so now my Jeep runs beautifully and my wallet is seriously lighter... I have just returned from TCJ Services in Bunting Road Northampton http://www.autoinsider.co.uk/local/garage-services/ai_40976.php (http://www.autoinsider.co.uk/local/garage-services/ai_40976.php) who did a wonderful job sorting out the problem, installing a new swirl motor and new breather hose with the new type seal and cleaned up all the dripped oil. Great service from guys that really understand Jeeps, and their labour charges are pretty reasonable too:)
Thoroughly recommend them to anyone.
Thanks to all of you that have contributed to this thread with replies, they are all thankfully received :)

Keith