Clubman Idles Fine but Upon Acceleration Stumbles and Not Driveable
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Neutral
Joined: Apr 2008
Posts: 6
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Clubman Idles Fine but Upon Acceleration Stumbles and Not Driveable
Hello all. I am in need of some help. I have an 08 Clubman that is struggling to go down the road. It starts up fine and idles fine, but when you give it gas, the car stumbles and bucks and is virtually impossible to get above 5mph if that.
Here is what has been replaced on the vehicle.
Timing Chain Kit (ran fine after this for a while)
Air Flow Meter
Cam Position Sensor
Fuel Filter
Fuel tank drained completely and new fuel put in.
Valve Cover with PCV valve
I've run a fuel pressure test and am getting 50 psi at idle, so I do not think it is the High Pressure Fuel Pump. Could it maybe be the fuel pressure regulator? Am I missing anything else that I can try to help diagnose this problem?
Here is what has been replaced on the vehicle.
Timing Chain Kit (ran fine after this for a while)
Air Flow Meter
Cam Position Sensor
Fuel Filter
Fuel tank drained completely and new fuel put in.
Valve Cover with PCV valve
I've run a fuel pressure test and am getting 50 psi at idle, so I do not think it is the High Pressure Fuel Pump. Could it maybe be the fuel pressure regulator? Am I missing anything else that I can try to help diagnose this problem?
4th Gear
Joined: Nov 2018
Posts: 366
Likes: 57
Im new here but have read a couple thousand posts LOL. Is the car throwning any codes? Im of the understanding that the hpfp is a much higher pressure Than 50 psi. That sounds like the pressure from the fuel tank pump.
3rd Gear
Joined: Mar 2004
Posts: 295
Likes: 13
From: Makakilo,Hawaii
My 08 Clubman S high pressure fuel pump at idle around 600-700, after walnut blasting i had problem it stumble during acceleration and like your car symptoms it idle fine, all coil pack are new prior to media blasting,
then it throws misfire code which i ignored i thought something else because i installed a Diverter valve spacer and i ended up taking it out but still it stumble, then i replaced the diverter valve itself due to detiorating on the diagphram but still stumble during accelerations. I finally look at the coil pack and when i pulled the #2 the rubber at the bottom seperated and installed the good coil pack that i removed and solved the issue, i can hear the new diverter valve functioning because this is the newer versions.
i suggest look at the coil pack and check for CEL or code.
Good Luck.
I also replaced the valve cover (aftermarket from WayMotors) not sure if the newer version with PCV and inspect the timing chain and guide they are tight and intact.
then it throws misfire code which i ignored i thought something else because i installed a Diverter valve spacer and i ended up taking it out but still it stumble, then i replaced the diverter valve itself due to detiorating on the diagphram but still stumble during accelerations. I finally look at the coil pack and when i pulled the #2 the rubber at the bottom seperated and installed the good coil pack that i removed and solved the issue, i can hear the new diverter valve functioning because this is the newer versions.
i suggest look at the coil pack and check for CEL or code.
Good Luck.
I also replaced the valve cover (aftermarket from WayMotors) not sure if the newer version with PCV and inspect the timing chain and guide they are tight and intact.
Last edited by drea-min; Nov 6, 2018 at 02:41 AM.
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