Car Wars: Detonation Strikes Back

95mustanggt · 08-22-2001, 10:43 PM

Did some testing:

Tested the IAT, Resistance was 20K ohms + (brand new IAT, or ACT)
The TPS was between .98 and 1.04 (Brand new TPS)
The voltage on the MAF was 8.04 V, battery voltage was 14.08

Mechanical timing (no SPOUT) was dead on 10*. With SPOUT connected, timing was between 30 and 40*. I was hard to read and was jumping around some.

After pulling the MAF and the IAT connections I ran the KOEO and KOER tests.

The KOEO test had codes, 113, 157 and 158. The 113 is the IAT the 157 and 158 are the MAF codes, but one is voltage too high one is voltage too low. I would expect a code because I took the connector off, but both high and low?? What do you think?

I cleared the codes (pulled the jumper wire mid test) and made sure there was no codes. I then took it for a ride. Ran great

.

I then stopped at 7-11 and when I started it up again the idle was funny, (unstable and rough, maybe a little on the low side)

Soon as I got on it, detonation. But only once or twice. Then it was running pretty good every now and then. But I checked codes again it was still clean.

Thanks for the help jim.

Any Ideas

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08-22-2001, 10:43 PM	#1
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	Did some testing: Tested the IAT, Resistance was 20K ohms + (brand new IAT, or ACT) The TPS was between .98 and 1.04 (Brand new TPS) The voltage on the MAF was 8.04 V, battery voltage was 14.08 Mechanical timing (no SPOUT) was dead on 10. With SPOUT connected, timing was between 30 and 40. I was hard to read and was jumping around some. After pulling the MAF and the IAT connections I ran the KOEO and KOER tests. The KOEO test had codes, 113, 157 and 158. The 113 is the IAT the 157 and 158 are the MAF codes, but one is voltage too high one is voltage too low. I would expect a code because I took the connector off, but both high and low?? What do you think? I cleared the codes (pulled the jumper wire mid test) and made sure there was no codes. I then took it for a ride. Ran great . I then stopped at 7-11 and when I started it up again the idle was funny, (unstable and rough, maybe a little on the low side) Soon as I got on it, detonation. But only once or twice. Then it was running pretty good every now and then. But I checked codes again it was still clean. Thanks for the help jim. Any Ideas