Need some more help....TPS

[Dave Burns]

OK here I go again. 85' basicaly stock. Fresh air, hot wire kit, good exhaust. Getting ready to go racing this weekend. We go over and put on the centerlines, 9 miles. During the trip home service engine light comes on. Shut it off, restart it, maybe 5 seconds, SES light comes back on and stays. So ok we have a issue. Off I go to my buddy "6banger's" place. Check codes, and get 13, 21, 22, 32. Codes 21 and 22 are tps so we figure we can go check that. Shoulda done that anyways since I replaced the turbo not 3 thousand miles ago. Anyways, we have 5 coming in, we get the low side set at .45, but when we rack it to WOT the reading does NOT change at all. NOTHING !

So, we are thinking TPS is bad. Car was running fine, before today(Of course we're trying to go racing,lol). Could the TPS failure (if failed) make all 4 codes rear their ugly heads all at once ? 13 I believe is O2, 21 and 22 are TPS and 32 is EGR. Car won't rev past about 2 thousand, and it runs barely. But idling is fine. Opinions ???? Lemme have it. Pretty much totally bummed cause racing is a wash this weekend. Got a couple weeks till the next. Gotta get it fixed.

 

[nickd2689]

A bad TPS could very easily cause an O2 code, especially when its only reading .45V but you have the throttle wide open, as for EGR, Mine had code 32 and after a little testing i found the EGR solenoid to be faulty ($40 at JaysGN.com). either way, the TPS needs to be replaced if it only reads .45V, I would change it (i got mine for 20 bucks at jaysgn) and see if that takes care of your other codes. If you have access to an information system (alldata, chilton, mitchel) i would use that for diagnosis. good luck.