TPS on 1989
Thread Starter
Advanced
Joined: May 2002
Posts: 65
Likes: 0
From: Vinemont Al
TPS on 1989
Is the TPS setting to be followed same as the one posted on here before. Think it say for 85 model and later. The 3 wires starting from the top are Black,Blue and White that go on the sensor. Do you still connect the top two and read.54 volts?
My car started idleing really fast the other day. Could the TPS be bad. Seems I replaced it not long ago. How could all of a sudden it just get out of adjustment?
I ordered a sensor plug tool from Mid-America to do this but it may be a week. Never understood how you can put a paper clip in the top two put the plug in and check between them.
Do many of you here have many problems with error codes, replacing MAF sensor ever year or so or is it just me? Could it be the parts I am using from Advance Auto Parts? revets00@mindspring.com
My car started idleing really fast the other day. Could the TPS be bad. Seems I replaced it not long ago. How could all of a sudden it just get out of adjustment?
I ordered a sensor plug tool from Mid-America to do this but it may be a week. Never understood how you can put a paper clip in the top two put the plug in and check between them.
Do many of you here have many problems with error codes, replacing MAF sensor ever year or so or is it just me? Could it be the parts I am using from Advance Auto Parts? revets00@mindspring.com
Instructor
Joined: Apr 2004
Posts: 127
Likes: 4
From: Troy Ohio
Electric parts seem to not carry much of a warranty. I have brought from Advance and took the parts back. I cant plug for any one store but it does seem you are replaceing that part to often. Question do you have any of the old ones you took off? if so try them again. That way you would have something to compare with.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
I doubt it has anything to do with the TPS. They don't fall out of adjustment and absent a code, there's little reason to suspect it. Other than a MAF, I've never had a single sensor fail on any car I've owned - but I have plenty of spares from replacing parts that weren't broken. If you have a trouble code - post what it is. If you don't have a scanner or means of obtaining data, spend the $'s on that so that you don't waste money on good parts. Better yet though, start tracing your vacuum lines - more than likely, one has broken or fallen off and that's why the idle is high.
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
I doubt it has anything to do with the TPS. They don't fall out of adjustment and absent a code, there's little reason to suspect it. Other than a MAF, I've never had a single sensor fail on any car I've owned - but I have plenty of spares from replacing parts that weren't broken.
I agree with SunCr on the vac leak possibility.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Sure they can go bad, but both of the codes are geared to an open or ground in the wiring or connector. If neither exist, replacing the part may only prove that disconnecting and reconnecting the harness was the real fix. Absent a code, suspect something else. A true fault in the TPS is usually a skewed or erratic signal and not something that generates a code or an idle problem (in fact if there is a code, idle and driveability is usually pretty good because it's running on backup). A scan is the only way to see what's going on, but for an erratic signal, an analog voltimeter can be better because you'll see the needle jump around as you open the throttle. Scanning and digital voltimeters won't show that - they average the signal, but a poor idle wouldn't usually be a symptom in the first place.
