i put new tps on car. prob is it only goes to .51 thats it. wat to do?

 

Has anyone ever popped the plug on your throttle adjustment screw.. When you tighten up the screws, Even if you can't get it down to that, You still might be ok.. what is it at WOT.. could be about 5.0 roughly...

 

yea i can get it to .54 if i turn idle screw. but it isnt rite.

 

I would say to try another. I was just curious if anyone played with you idle screw to begin with. There is a chance that it is defective.. The multimeter won't lie as long as it has calibrated. What was wrong with the old one?

 

If This is tuned port injection speed density you can use the older tpi tps and adjust it too 0.710VDC +/- 0.050VDC or 0.660VDC to 0.760VDC. The 90-92 tps does not have elongated holes for adjustment unlike 85-89 tpi it is not needed with the 1227730 ecm.

 

the old one had a dead spot in it. i did the minium air reset an when i had all that done is when it checked tps. thats when i discovered the prob.

 

If your 91 is OE stock, the TPS can read between .29 and .98 at closed throttle. It's not adjustable. The later(non adjustable TPS) OBDI GMs generally read .60-.90. As long as it's less than 1.0, the ECM won't have an issue with it. Minimum TPS is an adaptation of the ECM.