high revs/speed eng prob

ssc1 · 30th October 2007, 00:34

cars just started misbehaving at high speed and when i floor it through the gears.

when going at about 100mph and i floor it she will pull back a bit as though its a misfire or fuel delivery problem, and when i floor it through the gears by the time im at 70mph it will start to pull back again but even more like a missfire, strange

i have changed all the filters recently with no probs and it will usualy go right up to an indicated 125+ ,and have also just changed the exhaust plus cat with no probs.

i was wondering if it could be the fuel pump the sits next to the battery as it has been a little noisier just lately and did take a while to start from cold the other night, but other than that she runs and starts ok, the car is a diesel with 156k on the clock, any ideas please.....

Edit by Grey Ghost. ssc1 has assured me that his testing is carried out on a closed track.

Simon · 30th October 2007, 21:23

Could well be a fuel problem. Not being a diesel man I will leave it to out diesel experts on here to help you further but hopefully this little bump to your thread will aid your cause

30th October 2007, 00:34	#1
ssc1 Avid contributor 75 saloon Join Date: Nov 2006 Location: northampton Posts: 179 Thanks: 0 Thanked 1 Time in 1 Post	high revs/speed eng prob cars just started misbehaving at high speed and when i floor it through the gears. when going at about 100mph and i floor it she will pull back a bit as though its a misfire or fuel delivery problem, and when i floor it through the gears by the time im at 70mph it will start to pull back again but even more like a missfire, strange i have changed all the filters recently with no probs and it will usualy go right up to an indicated 125+ ,and have also just changed the exhaust plus cat with no probs. i was wondering if it could be the fuel pump the sits next to the battery as it has been a little noisier just lately and did take a while to start from cold the other night, but other than that she runs and starts ok, the car is a diesel with 156k on the clock, any ideas please..... Edit by Grey Ghost. ssc1 has assured me that his testing is carried out on a closed track. Last edited by GreyGhost; 30th October 2007 at 12:17.. Reason: As stated

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30th October 2007, 21:23	#2
Simon Banned - Join Date: Nov 2006 Location: - Posts: 10,318 Thanks: 0 Thanked 4 Times in 3 Posts	Could well be a fuel problem. Not being a diesel man I will leave it to out diesel experts on here to help you further but hopefully this little bump to your thread will aid your cause