Does anyone know if both cooling fans should turn on at start engine for a '93 LT1? Or does the primary turn on first and then Secondary when engine hot?..

please help, thanx

 

The fans should not be on at startup (maybe you have a trouble code that is causing it?)

93s and early 94s have primary and secondary fans. The primary fan comes on first, then the secondary (if necessary).

http://shbox.com/1/4th_gen_tech2.html#cooling

 

Hey thanx for the heads up shbox! Hey was checking your website and seems u know a lot about these models. Question? My car won't go over 40mph, doesn't kick in third gear as I'm driving. Rpms go over 5k and it won't throw another gear. Its like its stuck on second. Do you know what might be causing this?

 

Check for transmission trouble codes, first.

 

Sounds like the cars in limp mode for some reason.

 

shbox:
I checked for trouble codes with a paperclip as you had recommended before. All I get is dtc 12. No other code. Could this be that ECM bad?

 

But will do,
Does anyone know any mechanic that specializes in these cars here in south texas?

 

where in south texas?

 

I'm from Mission, Tx..
Down on the Rio Grande Valley

 

Limp mode is a condition in which the PCM loses just about ALL critical inputs from it's sensors and is VERY RARELY experienced. I doubt this is the case here.

 

well that's good to know.

 

True good point. I just sounded like it to me with the shifting issues he was saying.