2009 PUMA 2.4 limp mode

[thE Ear]

Hi gents

Need assistance if anybody had this issue with a puma.
Fault reading: P0089 fuel pressure regulator. Connection is good. Vehicle will run fine unless the revs drop too low or if I stop at idle. Engine check light will reappear and back to limp. Can clear fault and she good again until revs are reduced.

Could the FPR be at fualt?

Thx

[naks]

@theear glad to see you online again!

Sure sounds like the FPR - maybe if you can get your hands on a different vehicle and swap them to find out? I don't think I've replaced one, so not sure how much they cost.

But before you do that, check your filter and fuel pickup - the FPR will also throw an error if it is not getting enough fuel out of the tank. It might be a good idea to drop the tank and inspect the fuel pickup, it could be clogged by gunk.

I found this on Defender2.net, very useful info: https://www.defender2.net/forum/topic496.html

SSM38428 - P1169 and or P0089 codes logged
Models
LD - Defender
Title P1169 and or P0089 codes logged.
Last Modified 30-JUL-2008 10:16
Category Driveability
Symptom 608000 Runs Rough

Content Issue:
07MY onwards - Difficult to start, missfire, lack of power, driveability issues etc.
PCM can have either P1169 and or P0089 logged codes.
Pre assured Vin# Def 90 at Vin LD8A760582. Defender 110/130 at Vin# LD8A760304.

Cause:
Potential contamination in the fuel system.

Action:
Remove the fuel filter, drain complete contents into a suitable clear vessel. Note signs of any water contamination / debris.

1) If more than 40cc of water or debris is evident carry out the following:-
Drain the fuel tank.
Check the fuel tank breather location and reposition as per the illustration A attached.
On pick up variants please reposition the breather pipe in board towards the rear of the fuel tank.
If breather is blocked replace the pipe as per GTR.
Replace the fuel filter and clean out the fuel lines of any contamination / debris and or residue.
For P1169 code replace the FMV (Fuel Metering Valve), as per GTR and LTB00153. Illustration B.
If DTC P0089 is also present replace the PRV (Pressure Relief Valve), as per GTR. Illustration C.
Bleed and prime the fuel system as per GTR.
Start the vehicle and carry out the pump learn process with IDS as per GTR.
Carry out a road test to ensure the issue has been rectified and no codes have been logged.
Submit any findings on ePQR to engineering.

2) If no sign of water or debris but either codes logged carry out the following:-
Check the integrity of the wiring and the condition of the terminal connections between PCM and Fuel Rail Pressure Sensor and between PCM and FMV. Repair wiring as necessary and re test the vehicle.
If no issue is found with the wiring / connections, and code P1169 logged, replace the FMV as per GTR and LTB00153.
Replace the fuel rail PRV (Pressure Relief Valve), only If DTC P0089 is present as per GTR.
Start the vehicle and carry out the pump learn process with IDS as per GTR.
Carry out a road test to ensure the issue has been rectified and no codes have been logged.
Submit any findings on ePQR to engineering.

Note:- A new tank / breather design was introduced on Defender 90 Vin# LD8A760582. and Defender 110/130 at Vin# LD8A760304.
Please submit an ePQR for any issue seen on vehicles post these vins.

[thE Ear]

Hello Naks

Yes its been a while. Old TD5 doesnt give me any issues any more
The puma is a work vehicle so getting to know her now.

Thanks for the reply. Very useful. Will start with ordering replacement valve. Not many defenders around here to swap out.

I dropped the tank a few weeks back when the issue 1st started - loads of gunk and jelly like build up in the tank. Cleaned out and replaced the filter too. But now this intermittent fault keeps messing me around.

Thanks again for the help.

Cheers

[naks]

...I dropped the tank a few weeks back when the issue 1st started - loads of gunk and jelly like build up in the tank. Cleaned out and replaced the filter too. But now this intermittent fault keeps messing me around.

Aha!

In 2008 we had a similar issue in our old Audi A3 TDi after a tank of bad diesel. Audi cleaned the tank and replaced all fuel lines under the service plan, but the car still didn't run properly and limped around. Audi said they did all the could, but I knew this was not good enough.

I then chatted to my landy mech, who told me to throw in a bottle of Wynns Diesel Cleaner. Whatdayaknow, a few kms after doing this, the car came alive again, and ran super smoothly, even better than when it came off the showroom floor.

So now I use this in all my vehicles on a regular basis, and it might be worth for you to try this as it might clear out all the gunk that is still in the fuel lines, etc.

My mech now uses this Bosch stuff which he swears by, even keeps a sample of water-contaminated diesel in the workshop to show clients how good it is.

It is certainly a cheaper solution to try.

[thE Ear]

Goood idea.

What happened this space ……

[thE Ear]

Watch this space …… (typo)

[thE Ear]

Update:

So an fyi on this topic. Injector cleaner unfortunately not the quick fix.
Replaced the fuel rail and Fuel pressure regulator , air flow meter and EGR sensor.
Back in business.