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hard start/overpressurized/idle surge...

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Old 10-17-12, 10:57 PM
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hard start/overpressurized/idle surge...

Ok..iam experiencing everything wrong with this car. Its a s5 t2 jdm engine btw.. and first is the hard starts..very annoying..got new spark plugs already have a walbro fuel pump and spark plugs are good. Could that be a bad thermosensor? Or vaccum leak cause ive sprayed all along intake and turbo nothing. With that being said with the idle surge that just means i have to adjust my tps..because i unplugged it and it went to 3k and held there. For the overpressure it happened about a couple weeks ago and was fine before that but i noticed i was leaking something it was coolant ok i thought ill look into found the leak but why is there to much pressure? I got a new radiator cap from autozone..that didnt work..

So thats where i am and no overheating ,no white smoke, i ran the car cold and took the radiator cap off and some bubbles but coolant did not spill out. Sry if this isnt proper im on my phone at work so please help asap and it beeped at me while i was driving a couple times. Nothing came up on the idiot light...
Old 10-20-12, 07:38 PM
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Update fixed the over pressurized coolant system and idle surge...now the hard start think its the thermosensor or coolant temp sensor?
Old 10-20-12, 10:46 PM
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A coolant temp sensor is just that.It reads coolant temperature.
A Thermosensor is used to read temp and relay info back to the ECU.
Old 07-13-14, 02:23 PM
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@yammo7013 how did you fix your idle surge?
Old 07-13-14, 07:14 PM
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Ya I fixed it. I remembered when my friends and I put the engine in I messed with the idle screw on the throttle body (don't ask). So I played with it and finally got it to idle
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