Using my GM OBD I ECM Diagnostic Trouble Code Retrieval Tool (paperclip) I found I have a code 32. Did a search and it's either (EGR circuit fault) or (MAP sensor circuit open)

Do we have a MAP sensor?

 

You don't.
You have a MAF. Mass airflow sensor. 90 and up came with the MAP Manifold air pressure sensor.
Code 32. Sounds like you should check around and listen for vaccume leaks.

 

most GM cars are famous for EGR valves messing up . I didnt catch what year your car was but mine is an 89 . Mine has the vacuum EGR valve which are fairly inexpensive to replace compared to the digital EGR valve. Also yours may also have the EGR vacuum solenoid before the EGR valve like mine, that vacuum solenoid can also go bad and produce a code 32.

 

Yeah mine's also an 89. I've been thinking about replacing the EGR valve. Where is the solenoid located though?

 

As ya look at the EGR valve from the passenger side fender, look to it's left. The cylinder-shaped piece is the solenoid. Look to the solenoid's left, you'll see the coil. Look to the coil's left, you'll see the EGR diagnostic switch.

If the computer turns the EGR solenoid on, it checks the EGR diag switch. The EGR solenoid allows vacuum to travel to both the EGR valve and EGR diag switch at the same time. So, when the EGR diag switch "sees" vacuum, that means that the EGR valve also "sees" vacuum, and is operating.

So if there's a crack in any one of those brittle hard plastic lines, there'll be a vacuum leak, and the EGR diag switch won't see a vacuum. The computer then sents code 32.

 

Yep I should've known, I broke one of those little lines off where there's four going into something. Did that back when I was taking the coil out and it was like 30 degrees out. Thought I had it rigged good enough but maybe not.