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Question
i have 1995 camry 2.2 aut. transmission my rpm keep going up and down when the car on neutral or park after i drive for sometime what could it be
thank you
Idle control solenoid or a leak at the intake gasket.You will need to have the system vacuum checked by a mechanic unless you are familiar with how to do this.This will have to be diagnosed as there are many more likely causes of this symptom and i have told you 2 most common.Other reasons are,fuel pressure regulator,fuel pump,air mass meter,vacuum leak,egr valve or modulator,to name a few.
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Answers by Expert:
Sean Halliday
Expertise
general auto repair,japanese,bmw,mercedes,mini cooper 1960/2009,general british cars,ford.I DO NOT work on automatic transmissions.Manual transissions i install clutches only.Many people ask me to diagnose noises from their cars,unfortunately i cannot do this unless i hear it.As you appreciate,vehicles can and will make a variety of noises.I DONT UPGRADE or fit aftermarket performace kits,parts,chips,only replacement parts.
Experience
40 years experience on all general auto repair.
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