Is My MAH Pegging?

shinerstang · 10-04-2006

I received CEL yesterday, and took it to Autozone for the code. It came back as air/fuel ratio. Now this is the second time it has happened in a month or so, and only when I take her up close to redline. Any advise on what it may be? Am I pegging due to the duals and K&N without getting a tune?

BlueStreak03 · 10-04-2006

I highly doubt you're pegging your MAF. However, I would try using some electrical parts cleaning spray to clean the filaments inside it.

GT-EATER · 10-04-2006

What was the exact code? . The A/F might have changed enough to set the code off because of the duals exhaust ,either that or an 02 sensor is going bad .

shinerstang · 10-04-2006

P1285 Air/fuel mixture. As far as my MAH being cleaned, I'm pretty adamant about keeping it free flowing and it gets cleaned regularly with computer cleaner. I thought it might be leaning out at high rpm's. (5300) If I don't take it that high, it is fine, yet it doesn't do it all the time. Can't wait for that supercharger install......

kscoyote · 10-04-2006

Quote:

Originally Posted by GT-EATER

What was the exact code? . The A/F might have changed enough to set the code off because of the duals exhaust ,either that or an 02 sensor is going bad .

That's what I was thinking . ..

Fuel filter could be the culprit, or injectors, too

GT-EATER · 10-04-2006

P-1285 is a Cylinder Temp sensor that indicates the clinder temp is getting too high . Check you antifreeze , and if you have changed it lately be sure you bleed the system or it will get an air bubble in it and cause this sensor to trip.

shinerstang · 10-06-2006

Maybe I'll give her a flush this weekend anyway. So am I getting some type of detonation in the cylinder? Both times it has happened is when I got on it after getting off the highway. Hey GT, what type of tranny do you have?

GT-EATER · 10-06-2006

Quote:

Originally Posted by shinerstang

Maybe I'll give her a flush this weekend anyway. So am I getting some type of detonation in the cylinder? Both times it has happened is when I got on it after getting off the highway. Hey GT, what type of tranny do you have?

If it happens again after you flush it and bleed the system , then the cylinder head temp sensor is likely bad , also change out the T- stat while your at it and note the way it comes out so you don't put it in backwards .
The Tranny I am using now is a G-Force dog ring T-5 .

shinerstang · 10-06-2006

I was thinking about just yanking out the t-stat and not replacing it anyway. I will be putting it up for the Winter in 3 weeks, and really don't need it. Wouldn't it run cooler without it and the S/C?

GT-EATER · 10-06-2006

Quote:

Originally Posted by shinerstang

I was thinking about just yanking out the t-stat and not replacing it anyway. I will be putting it up for the Winter in 3 weeks, and really don't need it. Wouldn't it run cooler without it and the S/C?

Well not having the S/C on there would help but I would run it with the thermostat if I were you .