I have a '95 5.0 . Every morning when i start driving it bogs down and takes a few seconds for it to start going. Its been 90 degrees, so i didnt think that this was because it was a cold start? My big problem has just arose two weeks ago. All of the sudden i will be driving and the car will buck, the RPM's will shoot down to 0, and either stall out or return to normal. If i step on it, it seems to run a little slower than before, and when i come to a stop it will stall out. I changed the coolant temp sensor and the oxygen sensors and it made no diference. I took it to a mechanic and he checked the MAF and throttle position sensor and said they were ok. He too is confused with what it could be. Anyone that has ever had problems like this before please help me out however you can.

Mods include:
MAC ceramic coated shorties, MAC prochamber, MAC cat-back, MAC under drive pullies, Sub frame connectors, MAC CAI.

 

theres your problem....all MAC performance lol jsut jokin. So the car just will die...or at least start to until you press on the gas?

 

Is your fuel pump stock? If so, how many miles on the car?

 

Don't take your mechanics word for it, sounds like the MAF is dirty, clean that bitch and I bet that your problems will dissapear.

 

I have had this exact problem. Random bogging, sluggish performace, popping and BUCKING. It was my fuel pump. Throw a F/P gauge on there and see what your F/P is at. BUT first clean your MAF like 92hatch said, just to narrow the possibilities.

 

Thanks for responding. Its a stock fuel pump. The car seems to stay running if im on the gas. When idling the rpms will fluctuate from 800 to 600 rpms. It will bog when i start to go, run fine for a little while, start to buck and eventually stall out. You guys think that this is my fuel pump? Thanks for responding.

Is MAC stuff really not good?

 

no i was just joking about the MAC stuff man im a BBK guy so i gotta give ya ****t