My '95 mustang has a jerky acceleration when it warms up and car shakes when I'm sitting at red light. When I start the car it runs ok but it gets worse when the car warms up. I replaced spark plugs, put in injector cleaner into gas but that didn't help. Does anybody have any ideas?
Thanks
What engine? Have the codes read out. Is the Engine lite on?
Fuel filter, plug wires, dist cap, rotor
Clean the MAF.
What is it idling at in RPM?
I have a similiar problem with the idling on one of my fox bodies. Yet it's only when the motor is cold. I believe the compensation system linked with a fault air conditioning unit might be the case.
As backyard suggested, get a code readout/printout. It could be a simple vacuum leak.
Holly
Everyone should know what normal idle RPM is... and when something is amiss, make note of the tach.
typical when warm:
5.0 - 650 3.8 - 750/800 2.3 - 900/950A vacuum leak will cause roughness and HIGHER rpm. A bad IAC valve, usually LOWER RPM
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