Spyerx

where is it physically located?

Wife wanted some wine on Friday. So we took the RS and whipped the crap out of it on the back roads all day, and got her some wine.

About 1/2 way there, I floor it and well, no go, like 1/4 power. Pull over. Stop car. Start car. All is good, and drove car several 100 miles since. No CEL/warnings on dash.

Yesterday got a chance to hook up durametric. Was a pending code for TPS in the ECU module. I'll post a screen shot later

Cleared it, and check actual values / range with the throttle and it seems to be working as intended.

That said, I had my battery DIE DIE DIE a couple months back and had a bunch of 'phantom' codes in nearly all modules. So cleared all those out. None have reappeared.

My gas pedal is new in the car. MAF new. All plugs/coils are new.

Spyerx

Fisher

Spyerx, long time since we drove the canyons together.
"My gas pedal is new in the car."
You've likely checked it already, but I would begin at the gas pedal.
Disconnect and clean all mechanical and electrical connections.
Check the pedal output for linearity (DVM).
Interested in what you find.

Spyerx

yes need more antique canyon time!
the pedal on these is basically a potentiometer. There isn’t anything mechanical. Via the durameteic i plotted the pedal position and throttle position And they move in sync. This was with car off. Car on i can’t really do same test. It it’s linear pedal to throttle.

Spyerx

Bueller? Anyone?

Bxstr

I looked through all of the parts diagrams the other night and couldn’t even find the part for the throttle position sensor. Everything I found said it should be on the throttle body itself?

Fisher

Thanks! If that's the case, then there 'could' be some problem between the new foot pedal and the (assumed to be good} throttle body.

Protocav

It's right where the throttle cable meets the throttle body.

Spyerx

Are you fking w me? These have a cable?
i think it is on the throttle body if not part of

anyway the error didn’t come back after several 100 miles. I think a glitch

Tom@TPC Racing

The gas pedal is the "demand" pedal, often data equipment(AIM. MoTec, Racelogic...) show TPS value from the demand side. The "actual" TPS is in the throttle body assembly.

Spyerx

so I’ll need to hook up durametric again and check, but i think it can show both pedal and throttle position? I do recall selecting at least a couple indicators and graphing them and they seemed to move in sync with the pedal

anyway, any thoughts on the stored code? It did not throw a cel, and it has not come back after restarting the car and several 100 miles.

Protocav

Definitely fking with you

MJSpeed

TPS is definitely on the TB itself. Make sure TB is clean, MAF is working properly, check all connections to both and of course check the demand pedal as well.

Why did you replace the pedal?

Tom@TPC Racing

If Dura show both values you can check to see if they are same. The code might just a single occurrence if the throttle plate motor was stuck(i.e. from carbon build up) causing a differential in the two values. If it was a single occurrence key off would exit the limp mode.

Spyerx

i know your game. I will disappoint you tho in that my 71 motor will have a throttle cable we aren’t going to do e gas.

i broke it :-) more gas less brake.
the Spring or lever mechanism on the back wasn’t retaining and pedal was popping forward. It worked Fine (the potentiometer)but action was off.

Ill take off the air filter assembly and poke around. The maf is newer.
will spray down the throttle body.
i cleaned it not too long ago and it wasn’t very dirty. I change air filters often and use factory filters not oiled type.