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Hi i have a s80 01 just came back from the dealer after spending 2500 $ n still have the same problem.. idle goes up and down on park, hazards lights come on and off by them self when the car is looked, dash board speed gauge and rpm stops working while driving, in car lights stop working then minutes later are working fine and while driving sometimes the car starts trying to turn off i stop the car then it starts fine for awhile i have changed the battery timing belt and alternator now there telling me its the abs module that needs replacing please help
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A lot cars and truck have a limiter to stop from over reving to prevent engine damage when in park or neutral. Controlled by the PCM/ECM. The engine comes back to normal idle?
Hi goodafternoon,
I think the problem is your thermostat is bad, because I had similar issue that the rpm would be normal and then rpm goes up by itself for a while without any warning. I got an accident because of this in the winter. Hope this helps.
problem with 1993 Geo Prizm
'99 silverado 5.3 engin
will not idle runs at 2500 rpm and drops down to 1000 rpm the back up
to 2500 rpm -------------------------
it sounds like a vacuum leak to me, my car had the same problem but when i changed the hose that connected the valve cover to the fuel injectors the rpms dropped back down to about 800 rpms
replace the idle air control valve. this usually will not set a code for this condition.
??? What happens when you put the AC on or turn the wheel in park. If the idle goes down instead of up a hair then back down to normal then I would suspect the IAC.
Check the engine mountain rubbers ,, one or more of them is broken and needs to be replaced.
pop the hood, start the vehicle and move it from park to drive to reverse with the brake pedal down and you will see the engine moving. the broken mounting rubbers are the cause for this.
DO YOU KNOW THAT VOLVO S80 HAS MORE ELECTRONICS THAN A F-15 FIGHTER?
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