1996 Chev S-10 Blazer Lagging - Drive Train & Driveline


Question: I have a 96 s10 blazer 4x4 4.3 liter, Automatic. She is my baby with 175000 miles and I do not want to get rid of it. Initially it would stall after 5-10 minutes of run time and would have no power under load. (in gear pushing gas pedal to floor. I replaced fuel filter and the stalling problem has been corrected. However it still loses power when driving. I can slowly increase speed to around 55-60, when i depress the gas it "flutters" until i let up on the gas and it will go back to slow acceleration. New fuel pump professionally intalled 6 months ago. Trans has good level and the engine will rev up in park no problem. HELP!!!

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Technican: You need to use a fuel pressure gauge to check what the fuel pressure is. I suspect you have a weak fuel pump and the new filter just took a little stress off it. You need a minimum of 55PSI with the engine running. any less that that and you nneed to change the pump withh a delco branded pump.

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