Idle issue?
#1
Evolving Member
Thread Starter
Idle issue?
Ok so I’ve been trying to chase down an idle issue in my evo 8. I got that car idling great warm. I’ve replaced the tps and iacv. Cleaned maf, throttle body. No vacuum, boost leaks or cel. Problem is cold start and idle. When I cold start the car idles high for a few seconds then kicks down to like 900 then struggles there and eventually kicks up to high idle again. Also seemed like it was running a bit rough for a second when I started it this morning. I’m lost. Any help would be nice. Btw my ac runs even when it’s turned off. Not sure if it’s supposed to work like that. My dodge does.
#2
EvoM Community Team Leader
no the a/c shouldn't run all the time i would start there.
#3
Evolving Member
Thread Starter
#4
EvoM Community Team Leader
Yah i would definitely try that. Not only does the compressor put load on the engine, but the alternator also has to run the radiator/heat exchanger fans which creates even more load.
#5
Evolving Member
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#7
Evolving Member
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#12
Evolving Member
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My first thought was coolant sensor but u have no cel on. Someone told me to check the fan module but I think I figured that out because the ac is staying on. So I don’t think there is a problem with the fan.
#14
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Also, for my evo, the A/C is ON even if the indicator shows its off when the HVAC setting is set to defrost the front windows. You may want to switch it to blow the face to test.
#15
Evolving Member
Thread Starter
yes I have had the battery out multiple times. My dodge truck is the same way when running defrost. I know that’s supposed to be that way. But wasn’t sure about the car.