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MG MGF Technical - Jerky Accelerator On Off

I have a 97 MGF 1.8i that has an annoying problem.
When I press the accelerator pedal slowly the power seems to come on too abruptly and when I am driving and let go of the accelerator it takes the power off suddenly. This makes for a jerky ride so has anyone had this problem and solved it. Your Help is appreciated.
Yes had a look in the archives but did not find what I needed.

cheers,
Branko
Branko

clean throttle body best take off flush out with wd 40 also early plastic ones can warp maybe worth changing spark plugs and leads
tg hardwick

Warped throttle body???
Sam Murray

tg - I could have sworn your post wasn't there whan I responded to Branko.

How spooky!
Sam Murray

Def worth junking the plastic throttle body if you still have one, alloy 52's or even 56's are easily available. Put a 52 + induction kit on mine, made a helluva difference ;)
Russ68

Thanks for your suggestions.
I'm not so sure that it is a warped throttle body as it runs OK except for the instant on/off effect.
The symptom happened after the car was worked on by a mechanic a couple of years ago. The ECU was reported to have a dry joint and fixed at that time.
Wondering if the throttle position sensor would cause this type of effect?
Branko

Funnily enough, my 2001 TF does this as well, throttle on is smooth enough but it has a really agressive fuel cut off when you back off - trying to hold a constant speed and then running downhill with a slight backing off will suddenly cause an over-run fuel cutoff. As for the 2500rpm MOT emisions test, it's almost impossible to hold the revs at one level, even by hand directly on the throttle body.

Any ideas?
Tony Hall - Cambs

2001 should, of course, be 2003....it was a hard day! :D
Tony Hall - Cambs

This thread was discussed between 16/10/2010 and 26/10/2010

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