The 1990 suburban has a 350 and is throttle body. I do get an engine check light. I read in the haynes manual about how to clear out the codes by disconnecting the battery. I then drove the car again and got an engine light. I took a jumper wire and connected it to the two terminals on the computer trouble code output and read the flash codes. It told me that the TPS needed checked and that I had a lean exhaust. This engine has been rebuilt and all the sensors are brand new.
2006-07-21 12:33:09 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Just because the sensors are new does not mean they are working properly. Sometimes the computer is getting a signal that it doesn't completely understand. Only right way to diagnose this is to have a factory mechanic plug into a computer. Sometimes a loose connection or a little dirt or corrosion can give a faulty reading. Or there might be a broken electrical wire somewhere. All kinds of annoying little things are possible.
2006-07-21 12:39:44 · answer #1 · answered by Nc Jay 5 · 0⤊ 0⤋
I suspect your TPS needs to be adjusted in its position on the throttle body. For example, on a '88 Jeep Cherokee, you need to loosen 2 screws and rotate the TPS into proper position and tighten it up. But you need to measure 2 voltage values across 3 wires at the back of the TPS body. You need a good TPS installation guide to do it properly.
Does your Haynes manual provide more insight? Maybe there is a Chevrolet or GM owners forum on the web that can provide a better description.
Here is one article:
< http://72.14.203.104/search?q=cache:mF5xKpeQ9RoJ:www.mightyautoparts.com/pdf/articles/tt118.pdf+chevrolet+suburban+tps+installation+adjustment&hl=en&gl=us&ct=clnk&cd=5 >
2006-07-21 19:41:32 · answer #2 · answered by Tom-SJ 6 · 0⤊ 0⤋
Forget reading 'flash' codes, take it in and have it run through a real scanner to get all the error codes, have them do a print out and you will then have some idea of what you will need to do. Something as simple as a gas cap that isn't making a good seal can give you an error code.
2006-07-21 19:42:02 · answer #3 · answered by oklatom 7 · 0⤊ 0⤋
hey there!i had to get a new 1 put on my car and they had to put a volt meter on it to adjust it in to the comp.
2006-07-21 19:54:47 · answer #4 · answered by Anonymous · 0⤊ 0⤋