WK2 Grand Cherokee 2011-2012-2013 V62 fuel pump/relay recall

[drover]

Originally Posted by BFJeep

I have just dropped it off at Jeep, the service manager said that he and the foreman spoke and they believe their might be issues with this recall as it is not completely solving the issue. He said they would look into this for me. A side note, my radio has now stopped working..

Its not a laughing matter but they must have had their heads under a rock if they were truly surprised everything I've read to date it all seems to point to a board failure with possible software faults.................I wonder if they will ever fix it ?????? or should I say find an inexpensive repair.

[Treebreakerbob]

Originally Posted by BFJeep

Yeah I also thought that it was only for petrol. When I called them they indicated it was for my Diesel as well.

An update.

I collected the car on Friday 4 December and it has been driving very smoothly, the dealership said like a Swiss watch. Yesterday morning I took my son for a COVID test as he had a fever the night before. I called the testing station while in the parking lot to let them know we were in the parking lot and while I was waiting for our turn left the car idling with the aricon on. After 15 minutes, it started to splatter and rough idle, then it stalled. I started it up and turned the aircon off and remained idling for another 10 minutes before we were called in.

After the COVID test, drove home and on the way home the car stalled with no warning at all, it started up right away and no issue all the way home.

Later on I needed to go to get some groceries and I drove it to the store no issues, until I needed to reverse park the vehicle, the front wheels felt like they were shuddering (sensation like the brakes were engaged), turned off the car and bought groceries.

When I returned it struggled to start, I turned it off and then it started again, 1 km away from the shops, it stalled, I started again and no issue starting, then it stalled 2 km's away and then the Fuel Pressure / Throttle Body light and Engine light came on after it stalled again. Then when I started, the car would not engage into gear, then it felt like to engaged but when I drove it, it was in limp mode, so I changed gears manually all the way home.

I have just dropped it off at Jeep, the service manager said that he and the foreman spoke and they believe their might be issues with this recall as it is not completely solving the issue. He said they would look into this for me. A side note, my radio has now stopped working..

Read my thread WK2 Loss of Power”. All those symptoms can be caused by your five speed gearbox starting to fail, especially if there is water in the oil. The TCM controls the idle speed, fuel rail pressure, if you can select gears etc. Another symptom can be hard lockup in first, mine always stalled at low speed when you had backed off, say to go into a roundabout. The only fault codes I ever got were P0192 with throttle body light and engine light.
The other thing is old battery or the tipm
Sorry it is a long thread but worth a read. Did I say that dealers were absolutely useless
Good luck
Bob

[bjm]

There are still no parts to fix the fuel pump relay problem.Remember this is a world wide safety recall.Many owners have had the fuel pumps renewed foc.Put the pressure on FCA.

[BFJeep]

Hi Bob,

So I have read your post WK2 Loss of Power but I do not see what the resulting solution is that sorted your vehicle out.

Have you managed to sort out the loss of power / stalling of your vehicle and what was causing all the issues for your vehicle?

Regards
James

[Treebreakerbob]

Originally Posted by BFJeep

Hi Bob,

So I have read your post WK2 Loss of Power but I do not see what the resulting solution is that sorted your vehicle out.

Have you managed to sort out the loss of power / stalling of your vehicle and what was causing all the issues for your vehicle?

Regards
James

Yes, I have had the 5 speed gearbox rebuilt twice, the first people were well known but did a crap job, didn’t upgrade the torque converter and wrecked numerous things under the car, didn’t fit the dipstick seal properly causing water entry which destroyed the gearbox in 7,000 kilometres and then denied warranty because of water ingress plus were the most expensive.

If the gearbox is not happy it controls far to much with jeeps torque control firmware, works by detuning the motor for gear changes and longer gearbox life as it wears out including fuel rail pressure. Once the gearbox temp got over 65 deg it detuned the motor so that it wouldn’t fuel past 22 Ltrs hundred on instant fuel display or fuel rail pressure past 128,000 kpa . Towards the end there was sludge in the gearbox sump

Only code ever thrown P0192 and engine light, which went out next time you started the motor

Did you like the rough idle I got at a set of lights on the way to the dealers, no codes, their answer to reset the gearbox adaptive control. The mechanic knew it was the gearbox but never said in case it was warranty then the $8,000 to replace the fuel rail pressure sensor which can be done without replacing all the hard lines
Bob, hope this helps

[Treebreakerbob]

Hi guys
Just when you think you have fixed these things they find another way to frustrate you
The return of P0192 has started to occur again, however gearbox is really good,
Again started happening at low speed but the other day at 100 kph I had just crested a hill and backed off the throttle. Both throttle body light and engine light came on. Turn off engine (after stopping) and restarting deletes the throttle body light but engine light stays on for a few more starts
When driving home the car falters for a split second a couple of times ( feels like a small bump) and a bit later just running along at 100 kph the throttle body light comes on, no engine light so full power
Most times I get P0192 but sometimes I get P0193 (circuit high) as well
I have changed the fuel rail pressure sensor which fixed it for a while, then I changed the fuel filters and the external fuel rail relay. I have also had a gauge in the fuel line just where the fuel enters the high pressure pump and run the engine for sometime, there was no break in fuel flow or pressure. Pressure was from memory around 65 psi but I am sure I read somewhere the diesel pump pressure should be 85 psi, maybe someone can confirm this.
This has now started occurring every couple of hundred k’s instead of a few times a year
I have also had a couple of starts then engine turns off within a couple of seconds
Next steps are to change the M Prop solenoid, then the fuel pressure control valve (front of bank 2 fuel rail) if that doesn’t work, to changing the fuel pump in the fuel tank if still unsuccessful. What concerns me is it could be electrical in nature and not physical
I have read about a few people having this issue but have not seen any resolution
As I said before a dealership has looked at it $340 later a quote of $8,300 to replace m prop, pressure control valve, fuel rail pressure sensor and all hard lines
Any suggestions are welcome
Bob

[bjm]

The TIPM could be at fault.As you probably know original fuel pump relay was integrated in it.Some reports from US say other dodgy areas of the unit can continue the stop go,engine out symptoms.Obviously not dirty fuel? Have you drained the water trap .I know you are throwing codes not related to this,however !