Everybody, I need help. My truck is stumbling/decelerating at RPM's 2000ish. Between speeds of 55-70 I would say. It feels like I let off the pedal, but I don't. It starts out slight and builds up intensity and is obvious. I have changed the fuel filter. FP guage says 12. 5-13#. I read a thread about the APPS and so I disconnected the batteries +1hr, reconnected, and pressed the pedal slowly, but only once. That seemed to work for a few days, but now it's back. Also, I don't know if this matters, but my cruise will turn on, but not engage. I have a RR4 and watch the fuel rate (gph) drop when this is happening. The RPM's drop too (~100) and sometimes the speed (1 MPH). I also read a thread somewhere the fuel rate at idle should be . 5 gph. RR4 is telling me . 09-. 16 gph. I have not checked/cleaned the IAT, MAP, or speed sensor. I don't know how to check the volts/ohms. I don't have a scan tool. If that needs to be done give directions and my brother can show me how. This is nerve wracking to say the least and I know it will eventually leave me somewhere with no help.
Any suggestions?
If it's the...
APPS - new ($440 at stealership) or used
VP44 dying out - new, used, or rebuilt
ECM - do I have a choice
Thanks, Michele, Brenham, TX
I can't get my profile to read so here it is:
99QC 4x4 5-sp, +160K, BD-brake, RR4
Any suggestions?
If it's the...
APPS - new ($440 at stealership) or used
VP44 dying out - new, used, or rebuilt
ECM - do I have a choice
Thanks, Michele, Brenham, TX
I can't get my profile to read so here it is:
99QC 4x4 5-sp, +160K, BD-brake, RR4