i have to use starting fluid to start my 91 5.0. once it fires it runs good ive replaced my tps,injectors,regulator,and fuel filter ! and the security light is on on the dash. any ideas?

 

plesae help

 

I had this problem once, right after I bought my '91 RS 305, but once I got it started, I never had that problem again, and my security light was not lit. I was using the original key in the original steering column with the original VATS module and computer. I did have a problem with the VATS (security) in my sister's '90 firebird that had had it's steering column and ignition key replaced, but the symptoms were entirely different. I ended up making a new resistor that had the same resistance as the car's original ignition key.

 

it has a aftermarket ignishion and key. and it dont have the chip in the key could this be my problem?

 

most likely. this is the kind of info you should include in your first post. You'll have to try all 13 different resistances( is that a word? ) but this is easy with an assortment from radio shack. I think it cost me less than $20.