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Showing results for tags 'idle surge'.
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Hey everyone. 1996 Legacy Wagon L 260k 2000 EJ 251 with EJ25D heads 2000 4.11 5mt I'm having some problems that I'm not sure where to turn to. I have an idling issue. When at operating temperatures, my idle will be low (around 500) but not rough. When the lights are on, and I depress the brake, the lights will dim and the idle will drop and stumble. Never shut off. This problem has been present with two separate motors. First with an EJ25/EJ22 frankenmotor, and now my current one. I have swapped out my alternator (both read 14v), removed the crappily-installed uhaul trailer package, and created new grounds/cleaned up grounds in the engine bay. No change. I had the battery checked at the auto store, and it is said to be good. I've also cleaned the terminals/cables. I have suspicions that I'd like to see if they are valid/relevant. IIRC, this problem surfaced a couple years ago after I had replaced the then dead fuel pump. I did not replace it with an OEM pump. This one came from the local auto store. Around this time as well, the aftermarket radio quick working. The cd player works, and I can also use the auxiliary port, but no radio. I didn't listen to the radio at the time, so I never bothered. All fuses are good. Could either of these be related? Or, since this only happens when the engine is warm, could it be the coolant temp sensor? I believe I transferred the Crank/Cam/ Temp sensors from the last motor... Sometimes after a long drive on a warmer day, at idle it will sometimes idle up and down for a short period of time then normalize. Computer related? Thank you for your time. Any advice will be appreciated. Greg