Superwes98

so some of u read and helped me out on my thread about my car actin up, especially berry bledsoe lol
so berry i would like some more help from u and others

well i found out wat the problem was, after replacing EVER sensor in the car . it was the ECU
so i put in a A9P, which mine was an A9L, and as soon as i put it in is started up great and runs pretty good too. My only issue is that when i first started it and now ever time as well, the r.p.m. jumps way up to 2500r.p.m. and then gradually settles down. iv done the base idle reset and it didnt make a difference. AND i checked the tps but for some reason it wont go below 4.7vlts no matter wat i do. im confused because it was set perfect before i swapped the ecu. and the CEL just wont go away.
my question is, would the A9P be why its doing this?
or wat else?

DrDirt

4.7 Volts on the TPS is WOT. Maybe your TPS is shot or maybe you don't have it positioned properly on the throttle body shaft. Actually, I'm kind of surprised that it starts at all because when you crank the engine with the gas pedal pushed all the way down, WOT, that shuts the injectors OFF. That's how you clear a flooded condition on startup under normal circumstances.

VTECracker

adjust the tps .5v closed 4.7v wot GL

herrcomestrouble

I agree with Tony, more than likely you don't have the 'tang' of the TPS lined up correctly on the throttle blade. To test, take the tps sensor off the TB. Red lead to green wire, black lead to ground, read the voltage. Then report back. You can also turn the "tang" on the inside of the TPS with a flathead screwdriver and watch the voltage change. Install it on the TB again, set it between .96-.98V. Not .5 volts....

Should cure the spike in RPM on first startup, as well as the CEL.

Superwes98

yea thats wat i figured but wouldnt it have read the same before?
and when i start it, it starts as if u slam on the gas when it jumps up to 2500 r.p.m.

could somethin be makin the car jump to WOT?

Superwes98

no offense guys, but i know how to set a tps lol. its just that it wont go below 4.7. it was at 4.9 when i first checked it

Superwes98

but could somethin be telling it that its WOT or making it WOT

VTECracker

.5 v is where I set mine works great
just change it

Superwes98

ok, so u think its just bad?
and btw, i have it unplugged, it runs better like that. so could that have the same symptoms of a bad one?

Superwes98

iv been readin up that the ecu ground wire can cause these little things. is that true?
and is that located? is that the little black wire on the negative battery cable?