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31-07-2018
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Newbie
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Join Date: Sep 2016
Location: New Zealand
Posts: 33 What Jeep do I drive?: XJ
Likes: 8
Liked 8 Times in 6 Posts
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Quote:
Originally Posted by cheezel
Do you always/commonly engine brake? This would always make my car stall -- Even not *braking* per-se (driving along, in gear and take foot off throttle [coasting in gear] is in essence same trigger for stall).
I found that if I changed my driving style to never do this then I never had issues with check engine/stall.
- mine would always immediately start straight up again.
Sounds like your problems may well be different, in which case adjusting the idle seems like it's worth while.
Cheers
Sent from my SM-G965F using Tapatalk
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Yes I do engine brake more often than not. I think I might have tried your driving technique before and it didn't seem to have an effect. I'll give it another go just to be sure anyway.
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31-07-2018
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Newbie
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Join Date: Sep 2016
Location: New Zealand
Posts: 33 What Jeep do I drive?: XJ
Likes: 8
Liked 8 Times in 6 Posts
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Quote:
Originally Posted by layback40
If after it has stalled when up to temp & you restart it, does it idle ok? That is about 850 rpm with your feet not on any peddle? If it does idle properly in this situation, increasing the idle by moving the lid may not help. Does the pressure control fitting, the banjo bolt connecting the return line to the IP work properly? I am clutching at straws with my suggestions now, but it is possible that if very little fuel is being used when the internal lift pump is working hard it could cause a problem.
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Yea it seems to idle like normal. I have a cheap obd 2 device that seems to give the exact RPMs so ill plug that in sometime in the next couple of days and let you know.
I don't want to sound like too much of an amateur (which I probably am) but how exactly would I be able to tell if the pressure control fitting and banjo bolt work properly?
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31-07-2018
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Grumpy Old XJ Dsl Owner
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Join Date: Jan 2011
Location: Northern Victoria
Posts: 13,809 What Jeep do I drive?: XJ
Likes: 4,596
Liked 6,565 Times in 4,348 Posts
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Quote:
Originally Posted by arotovegan
Yea it seems to idle like normal. I have a cheap obd 2 device that seems to give the exact RPMs so ill plug that in sometime in the next couple of days and let you know.
I don't want to sound like too much of an amateur (which I probably am) but how exactly would I be able to tell if the pressure control fitting and banjo bolt work properly?
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Not amateur at all. I dont know of an exact procedure.
with the engine running you could loosen the return hose off the fitting & make sure you have some flow. I have also blown mine out with compressed air to make sure its not gummed up. it should only flow from the pump (center of the bolt) to the fitting (outside of the bolt) . it has a non-return function.
__________________
98&01XJVMs,06&07KJCRD's,No longer question authority,I annoy it.More effect,less effort.10000Club
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01-08-2018
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CrawlerStar
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Join Date: Apr 2010
Location: Melbourne Australia
Posts: 402 What Jeep do I drive?: XJ
Likes: 88
Liked 111 Times in 90 Posts
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Probably it is fuel supply related .
Check if possible the fuel return amount on each injector .
There is a chance that most of the fuel pressure is lost trough the return lines . It involves removing the return lines one by one and measure the amount of fuel pushed out in to a jar during a period of time (2-4 minutes) while engine is running . Not sure what that amount should be exactly but should be the same or pretty close on all 4 injectors .
If big difference than injectors have to be serviced .
Other thing is to measure the fuel rail pressure to see if IP works properly.
If all above Ok ....than don't know what else to suggest for know .
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02-08-2018
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Newbie
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Join Date: Sep 2016
Location: New Zealand
Posts: 33 What Jeep do I drive?: XJ
Likes: 8
Liked 8 Times in 6 Posts
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Thanks guys. I have a mechanic friend that will help me to test those things. I'll let you know how it goes once we get around to it.
Also, the obd 2 device said that my RPMs at idle sit between 850-852.
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02-08-2018
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RubiconSlammer
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Join Date: Oct 2009
Location: Coffs harbour
Age: 38
Posts: 2,007 What Jeep do I drive?: XJ
Likes: 143
Liked 821 Times in 362 Posts
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Has the pump been played with prior to this happening? Or has it just happened on its own?
Just because years ago when i was playing with the pumps i eneded up with this issue. However i never had any engine lights come on.
On the pump there is a fuel cut off soleniod i would suggest pulling it out and give it a clean it could be cutting the fuel and making it stall?
__________________
2.5L VM Diesel and 4.0L XJ ute Owner
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02-08-2018
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Newbie
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Join Date: Sep 2016
Location: New Zealand
Posts: 33 What Jeep do I drive?: XJ
Likes: 8
Liked 8 Times in 6 Posts
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Quote:
Originally Posted by Mudmonster
Has the pump been played with prior to this happening? Or has it just happened on its own?
Just because years ago when i was playing with the pumps i eneded up with this issue. However i never had any engine lights come on.
On the pump there is a fuel cut off soleniod i would suggest pulling it out and give it a clean it could be cutting the fuel and making it stall?
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Na the pump hadn't been touched. I'll take a look at the solenoid and give it a good clean.
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