ECM Fuse? OBD Scanner not connecting

[Diego0123005]

My 92 Silverado has been throwing out check engine lights almost every time i drive it, but when i take it to get it scanned it wont connect. O'reilly told me to check my ECM Fuse. Is this my problem? How do i check it and/or replace it?

 

[someotherguy]

IF they're using a scanner that is compatible with your '92 GM OBD1 system...then your suspect is the cigarette lighter fuse.

Otherwise, you should be using a paper clip, all you need. http://www.chevytalk.org/fusionbb/showtopic.php?tid/273660

Richard

 

[Diego0123005]

Got it. Code 32. EGR (exhaust gas recirculation) valve error. My truck burns oil and smokes out of the exhaust quite a bit. Could this be the cause of the CEL?

 

[someotherguy]

Well, I'll give it a big MAYBE. Probably not, but not totally impossible. The EGR test that the ECM runs depends on the O2 sensor readings; under certain conditions it will open the valve and compare O2 readings afterwards to see if it went lean. If the O2 is crudded up from lots of oil burning, it may not be able to successfully perform the EGR test.

I'd worry a lot less about that code 32, and tend to why it's smoking.

Richard

 

[Diego0123005]

I bought the truck and when I was using it, I noticed the smoke. Probably rings or valve guides. I don't have the money for a rebuild or another engine which is why ive been driving it like that.