Jeep Grand Cherokee 5cyl Deisel

Submitted: Sunday, Jan 23, 2011 at 11:34
ThreadID: 83842 Views:2797 Replies:5 FollowUps:5
This Thread has been Archived
My wifes Jeep cuts out completely when you plant the foot down.
We just had a service done where mechanic had trouble bleeding air from the system after genuine fuel filter change.
He found a leaky pipe and replaced with genuine one.
Now everything shuts down when you accelerate to overtake which could be disastrous
Vehicle is back at mechanics and he is at a loss as to why the computer seems to think there is no fuel and shuts everything down.
Also fuel light on dash comes on and stays on.
Any thoughts our there would be appreciated
Cheers Ray

P.S When it stops and you pull over it starts straight away without a problem
Back Expand Un-Read 0 Moderator

Reply By: Member - Joe n Mel n kids (FNQ - Sunday, Jan 23, 2011 at 17:16

Sunday, Jan 23, 2011 at 17:16
may well be simply fuel, the computer is most probally fine but if it runs out of fuel no computer can help you...
I dont know Jeep well but if anything was changed start looking there first, i will assume it starts fine, idles fine, and all is normal when just cruising, you go to pass something and it cuts out, you panic (bugger of a thing to happen,...) and pull over, start it up and away you go again ??????
For me i would look for a fuel restriction, to start and run normal does not require as much fuel flow, when you put your foot flat it demands full flow of fuel and it simply get to a point where it cant suck as hard as required and cuts out .....
I have had exactly the same happen to me, took weeks to find and was a blockage in the line into the injector pump, tiny little gause filter deep down in the pump, big as jelly bean, blocked with fine hairy stuff ......

May be off track but hope it helps..
Cheers
Joe
AnswerID: 442819

Follow Up By: Member - Poppy (QLD) - Monday, Jan 24, 2011 at 22:53

Monday, Jan 24, 2011 at 22:53
Thanks Joe
You're right, it operates perfect except when you put the foot down.
So will get mechanic to look for fuel restriction/blockage, bugger of a motor to work on, no room to get hands in anywhere
Cheers Ray

p.s Heading up your way mid year, will drop in and say g'day
0
FollowupID: 715010

Reply By: hoffy - Sunday, Jan 23, 2011 at 18:11

Sunday, Jan 23, 2011 at 18:11
I have the same vehicle and had the same thing happen after some fuel lines were changed.
Turned out to be air in the fuel system. The fix for me was to loosen off the bleed screw on top of the filter while the motor was idling till no more bubbles appeared.
I had to do that twice. After that no more troubles.
Hope it is as simple as that for you.

Graeme
AnswerID: 442825

Follow Up By: Member - Poppy (QLD) - Monday, Jan 24, 2011 at 22:55

Monday, Jan 24, 2011 at 22:55
Yeah Graeme, bugger of a thing to bleed, last time mechanic done filter change he had to pressurise the fuel tank to bleed it.
Will let him know what you did to solve it
Cheers Ray
0
FollowupID: 715011

Reply By: happytravelers - Sunday, Jan 23, 2011 at 21:34

Sunday, Jan 23, 2011 at 21:34
A well known problem with these engines is that the fuel line O rings go hard with age and heat and start sucking in air. There are six O rings to change, four on the inlet lines to the high pressure pump, one on the fuel pressure sensor at the rear of the fuel rail and one on the fuel filter.

Jon
AnswerID: 442848

Follow Up By: Member - Poppy (QLD) - Monday, Jan 24, 2011 at 22:58

Monday, Jan 24, 2011 at 22:58
Hi Jon
I know he changed one O ring, I will get him to change the others.
Thanks for that
Cheers Ray
0
FollowupID: 715012

Reply By: mikehzz - Sunday, Jan 23, 2011 at 23:38

Sunday, Jan 23, 2011 at 23:38
Hey, remember that engine is actually a Mercedes. You may get help asking in those circles as well. Mike
AnswerID: 442855

Follow Up By: Member - Poppy (QLD) - Monday, Jan 24, 2011 at 23:00

Monday, Jan 24, 2011 at 23:00
Thanks Mike
He was actually waiting for the local Mercedes mechanic to get back to him, but I told him not to hold his breath on that one.
Cheers Ray
0
FollowupID: 715013

Reply By: Joe - Monday, Jan 24, 2011 at 17:26

Monday, Jan 24, 2011 at 17:26
Yeah, it will almost certainly be fuel starvation as indicated by the computer.

The cause will probably be air in the system so try bleeding it at the filter, but before you do that, check the installation of the filter itself. Did the mech use a genuine filter or has he fitted something that doesn't flow as well? Is it fitted incorrectly and then compressed and is blocking some of the fuel flow?
AnswerID: 442920

Follow Up By: Member - Poppy (QLD) - Monday, Jan 24, 2011 at 23:18

Monday, Jan 24, 2011 at 23:18
Hi Joe
Yes he used genuine fuel filter as I had to get a bank loan to pay for it.. lol
We all seem to think it has air in the system somewhere.
Must be sucking it in somewhere as it has been bled correctly even if it did take some time.
Will get him to check if filter is fitted properly
Cheers Ray
0
FollowupID: 715014

Sponsored Links