|
95 Tahoe engine miss
Hey guys, I have tried everything to fix my tahoe. Its a 95 with the 5.7 4x4. The clock shows 115k. I noticed a miss and that the engine "stumbbled" during take off. I figured it was time for a tune up. I did plugs, wires, fuel filter, cap and rotor. After this didnt fix the trouble I looked deeper. I found the ignition coil to be a bit weak so I replaced that....still didnt fix it.
I have checked the TPS, IAC, ignition module, fuel pressure, fuel pressure regulator. After I didnt find anything I gave in and took it to the local dealership. They said it was a bad ECM. After debeating the $700 I was quoted, I called Napa and they could get me a reman ECM. I changed it myself and still nothing. I also swapped the MAP out for a new one.
My next step is a reman distributor. IT never looses fuel or pressure. Almost acts like it drops a cylinder or looses spark. IDEAS???? Please help
|