Sticking Throttle
#1
Sticking Throttle
Hi all,
Hope someone can help with this as I am out of ideas!
My car is a 1998 XK8 - When I take my foot off the throttle the car will stick at around 1500 rpm for a few seconds before dropping to normal, this makes downshifting a little jerky so say the least!
So far I have cleaned the throttle body, replaced the throttle body with another used one, replaced the inlet manifold and throttle body elbow gaskets, cleaned MAF, checked all vacuum pipes for air leaks, cleaned the injectors with an ultrasonic cleaner, checked fuel rail pressure (around 40psi) and reset the ecu with battery disconnected several times!
Also noted that the car has negative long term fuel trims (around -10) if this may be related?
Can anyone give me any guidance on what to try next?
Thanks in advance!!
Hope someone can help with this as I am out of ideas!
My car is a 1998 XK8 - When I take my foot off the throttle the car will stick at around 1500 rpm for a few seconds before dropping to normal, this makes downshifting a little jerky so say the least!
So far I have cleaned the throttle body, replaced the throttle body with another used one, replaced the inlet manifold and throttle body elbow gaskets, cleaned MAF, checked all vacuum pipes for air leaks, cleaned the injectors with an ultrasonic cleaner, checked fuel rail pressure (around 40psi) and reset the ecu with battery disconnected several times!
Also noted that the car has negative long term fuel trims (around -10) if this may be related?
Can anyone give me any guidance on what to try next?
Thanks in advance!!
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#10
I always like to start with the easiest (no cost) solutions first. If the throttle is sticking:
1. Try spray lubing the cable.
3. Check for slop in the cable.
3. Check the tension on the return spring.
4. Check around the accelerator peddle in the foot well and see if something is rubbing the pedal.
Just a few random thoughts ignoring electronics.
1. Try spray lubing the cable.
3. Check for slop in the cable.
3. Check the tension on the return spring.
4. Check around the accelerator peddle in the foot well and see if something is rubbing the pedal.
Just a few random thoughts ignoring electronics.
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