SES light goes on and off constantly
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Joined: Apr 2004
Posts: 31
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From: Kearney Nebraska
Car: 1989 IROC-Z 305 TPI
Engine: 305 TPI
Transmission: 700R4
SES light goes on and off constantly
A few weeks back, I had a problem with a code 45. The car would start then die instantly. I was told to check fuel pressure, TPS, FPR. Well it turned out that the Microtek MAF that I had replaced my old Bosch unit with had hit the crapper. I put my Bosch MAF back in, and it started right up with no stumbling or idle problems. So no more code 45, now i'm getting codes 22 and 33. I replaced the TPS with a new one, and set to .54 volt. The SES light comes on when idling, and when I accelerate, it goes off until I slow down again. It also seems to be idling kind of high. My tach has a short in it that cuts my ignition system out, so I don't know exactly what RPM the SES light goes off or on. Anyone help me with this please!!...I'm wondering if it isn't the ECM?
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