Burning rich?

Mike Smith

Registered User
It seems like my SC is burning rich. I have some black residue on muffler tips and rear valance. What is that about?
 
It could be that your MAF is giving incorrect readings to your EEC causing it to run rich. Take your car to Autozone or somewhere equivalent and have them run some codes, or buy your own scanner at Wal-Mart and see what you get.
 
First off welcome to the club. Now by the sounds of this it could be that you have a 180 Tstat in the car if so this will not let it run in the cars right temp zone or someone has set the fans to come on sooner then 228. This black stuff your seeing left how dark is it? Other things to look at are plugs and wires if there old change them as well your O2 sencer and clean your maf wires with some brake clean or T.B. clener. The other thing to look at is to see when your rad fan is coming on if at all because the EEC temp sencer might be gone.
Good luck
my car did the same thing and still a little because I have a 180t-stat and rad fans on befor 228.
 
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