Spikes in MAF at WOT

[NomakeWan]

Right I guess it would just be null. I was thinking if it were a wiring issue that the spike may remain. The MAF is only a year old and probably doesn’t have 300 miles on it.

The spike is a dropout. If there's no MAF plugged in you won't get any signal from the MAF. So the line would just be completely flat. Even if the "spike" were there it would be invisible because the signal line would be nothing.

[Motors]

Copy... thanks for your help.

[2xls1]

I would see if it occurs with a different scan tool.

[Rocko350]

Look at the pins in the connector plugged into he MAF. Get us a pic of that. Most of the time its a yawning pin. I have had alternators that "leak" ac current do things like this but get us the pic first.

Chris

[Motors]

Ok thanks I’ll do that. That connector with pigtail is new as the MAF location doesn’t coincide with the harness. This is an SS Monte which now has an 86 Camaro TPI setup. The connections between the new pigtail and the harness were soldered and heat shrink. I’ll get a pic back in a couple days having some trans shift adjustments made at the shop right now.

Thanks

[WASyL]

do yourself a favour and switch to OSE 12P code. MAF sensor s a good thing in theory but very faulty, going SD mode saves a lot of trouble.

best regards