[jbeerley]

I was driving on the highway this evening when all of a sudden my R lost throttle response. The engine basically turned off. While on the shoulder, I found that the car would start up and rev for a few seconds (I couldn't rev it above 4k), but then the engine shuts off! This happened each and every time I tried to restart it.

Now, I've since had it towed to a garage, and tomorrow the garage will hopefully find the root of the problem. In the meantime, I was wondering if anyone had an idea as to what may have caused the latter.

 

[IwantaS60R]

Re: I need help diagnosing a problem. (jbeerley)

Sounds like fuel pump

 

[crimnlmnded]

Re: I need help diagnosing a problem. (IwantaS60R)

Quote, originally posted by IwantaS60R »

Sounds like fuel pump

+1

 

[97GLTbrick]

yup fuel pump

 

[Foreveradvanced]

Re: I need help diagnosing a problem. (crimnlmnded)

I say if you have a Phuzz intercooler on your car its probably the intake hose that popped off where its connected to the factory plastic hose that's connected to the throttle. If so, I'd recommend that you put a metal sleeve inside the plastic hose so that you can effectively clamp it down.... just a guess, off the top of my head.....

 

[Denis]

Re: I need help diagnosing a problem. (jbeerley)

Would the motor keep running for a few seconds with the faulty fuel pump? I thought that it would not start at all. I might be wrong but it the diagnostic would probably provide the answer.

Please let us know about the results.

 

[LTA]

Re: I need help diagnosing a problem. (jbeerley)

If you don't have an OBDII scan tool a quick basic check for fuel pressure is to turn to position II and then screw off the cap at the fuel pressure valve on the fuel rail and carefully depress the valve with a shop rag on top (protect your face/eyes and don't let the gas squirt wildly). You should see/hear fuel squirt out. Be careful since there is min 300Kpa of pressure in there. If you find there is little or nothing coming our it's a good indication that you don't have any fuel pressure and hence the problem could be related to the pump, PEM, etc.

FYI: There is a somwhat known problem with V50/S40 (and some XC90's) where the PEM connector gets corroded and kills the PEM. The fix is redesigned PEM and harness and relocation from outside to inside the vehicle. This happened to my XC90 but in my case it would not run at all, it just turned over with the starter but would not run at all in position II. Not sure if this has ever happened in a P2 R.

Good luck and report back.

LTA

 

[jbeerley]

Wasn't the fuel pump like a few others and I suspected. In fact, the piping that goes into the intake manifold blew off. Somehow or another the clamp came loose, and the boost pressure blew the piping off. Not sure if this was a factory piping/clamp problem or a problem stemming from the FMIC. I will report back on Monday.

 

[rogersampson]

Re: I need help diagnosing a problem. (jbeerley)

Looks like FOREVERADVANCED called it! As was pointed out, I don't think with a fuel pump failure it will continue to start, and die. As sson as there is no fuel, it just will not start, only crank.

 

[crimnlmnded]

Good call forever.

 

[97GLTbrick]

Yes it is possible for the fuel pump to run only a few seconds many of times if teh bushing is on its way out but has not completely gone out they had this problem for many years we went through 5 or 6 diff fuel pump designs before they came out with one that was decent glad you found the problem though post more details when you know

 

[Foreveradvanced]

Re: (97GLTbrick)

Score one for me!
I got it right!