RS Convertible V6 2.8 MPFI Auto. Will start up rough Idle with foul exhaust (added seafoam) that can burn eyes but as soon as you put it under load (or) give it gas the roughness will go away at about 2-3000 rpm car lacks in Power and then will just die (bog) down.
Car sometimes will restart right away or you have to wait doesn't matter hot or cold.
Replaced Fuel Pump/bag filter, Fuel Filter, Fuel Lines, Mas, and yet no change with issue.
Then I have Cleaned the MAF, TPS, Still can not even pull out of (home) garage Any help would be greatly appreciated. Thanks in Advance.
Also car did sit (farm) in a garage for sometime so replaced gas and still same issue.
I did find a Spider (lol) Web in the TPS when I removed it and cleaned I have Metered With Analog tester and it tested good yet others still think TPS is problem. I am thinking the ECC/ECM or Fuel regulator but any more Money and wife will throw me out of house : (
One other note. When car was able to be driven on the road it just seemed to never have any "OOMPH" but as above now with the oomph it just won't stay running.
Thanks again from an "OLD" backyard Mechanic that loved Chevy before 1971
Sunday, May 13th, 2012 AT 6:10 PM