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SO i've been chasing issues with my 98 KA-T lately. Car hasnt driven since mothers day evening when i hit a HUGE water splash in a bad t-storm.
I went through teh water w/ throttle closed, but i know the air filter got wet (its in teh engine bay!) and i know the MAF got misted from the inside with water.
Over the months, i've been so busy, just getting to fix it now. I had the 2500rpm rev limit too, which i've been told is the MAF.
Well i opened up the electronics box on the MAF, found WATER. Cleaned with electronics cleaner and soft toothbrush, dried out, re-sealed the box top. Reset codes (couldnt read them though for some reason, my scanner wouldnt retreive them). Still same issue. Then i found the "eng cont" fuse blown. Replaced that, now the engine will rev, but still wont hold idle and throttle response is poor. It was misfiring too. I found 2 broken spark plug wires, cracked dist cap, and corodded rotor. replaced all that, and cleaned the plugs (electrode still looked good, once cleaned). So its not misfiring anymore, much better, but still wont hold idle.
I havent tried to actually drive it. I havent scanned it since replacing the fuse (im guessing that fust may have blocked me from retreiving codes).
But have had the bat disconnected for periods to clear codes.
I just cleaned all charge plumbing, and also re did some questionable wirign i found on the car/in the maf wiring too.
So, i know i need a service manual, scanner, and volt meter to really diagnose this any further, but just wondering, has anyone had a MAF fail and NOT had the 2500rpm rev limit, but the engine wouldn't idle?
Im going to search further in, but just wanted to hear other experiences.
Also, i have a jim wolf ECU, 370cc injectors, old rev hard turbo kit 6psi, 255 walbro fuel pump, SAFC (untuned), stock MAF set AFTER the intercooler before the throttle body. I bought the car this way.
Interestingly i threw a stock KA ecu in there just to see what'd happen. The engine would idle w/o me holding throttle, although not as smoothly as it should. If the jim wolf ECU was bad- would it even start? I think it wouldnt start if the ECU was blown. Water DID come INSIDE the car, b/c of a torn shifter boot! doh.. but i quickly layed down a whole bunch of napkins and soaked it up, i dont THINK the ECU wiring or ecu got wet, since its a little above the floor.
Any ideas will be appreciated. THANKS!
-steve
I went through teh water w/ throttle closed, but i know the air filter got wet (its in teh engine bay!) and i know the MAF got misted from the inside with water.
Over the months, i've been so busy, just getting to fix it now. I had the 2500rpm rev limit too, which i've been told is the MAF.
Well i opened up the electronics box on the MAF, found WATER. Cleaned with electronics cleaner and soft toothbrush, dried out, re-sealed the box top. Reset codes (couldnt read them though for some reason, my scanner wouldnt retreive them). Still same issue. Then i found the "eng cont" fuse blown. Replaced that, now the engine will rev, but still wont hold idle and throttle response is poor. It was misfiring too. I found 2 broken spark plug wires, cracked dist cap, and corodded rotor. replaced all that, and cleaned the plugs (electrode still looked good, once cleaned). So its not misfiring anymore, much better, but still wont hold idle.
I havent tried to actually drive it. I havent scanned it since replacing the fuse (im guessing that fust may have blocked me from retreiving codes).
But have had the bat disconnected for periods to clear codes.
I just cleaned all charge plumbing, and also re did some questionable wirign i found on the car/in the maf wiring too.
So, i know i need a service manual, scanner, and volt meter to really diagnose this any further, but just wondering, has anyone had a MAF fail and NOT had the 2500rpm rev limit, but the engine wouldn't idle?
Im going to search further in, but just wanted to hear other experiences.
Also, i have a jim wolf ECU, 370cc injectors, old rev hard turbo kit 6psi, 255 walbro fuel pump, SAFC (untuned), stock MAF set AFTER the intercooler before the throttle body. I bought the car this way.
Interestingly i threw a stock KA ecu in there just to see what'd happen. The engine would idle w/o me holding throttle, although not as smoothly as it should. If the jim wolf ECU was bad- would it even start? I think it wouldnt start if the ECU was blown. Water DID come INSIDE the car, b/c of a torn shifter boot! doh.. but i quickly layed down a whole bunch of napkins and soaked it up, i dont THINK the ECU wiring or ecu got wet, since its a little above the floor.
Any ideas will be appreciated. THANKS!
-steve
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