check the transmission fluid level. it could also be a bad transmission ground.. transmission problems can cause your engine to do that as odd as it seems..

 

thanks guys got a lot to look at..the mech did read codes and said it was the egr coming up the cruise control..but nothing to do with battery or alternator or tps..he kept it for two weeks and died twice on him and he said when he hooked it up to a reader or scope nothing came up..i think you are right he was just guessing..thats why I have turned to you guys..I've worked on a few cars..but not this electroinc stuff..own a bunch of tools and want to try to save some labor cost..how do you do the key trick..can some one give me a link or tell me..again thanks for all this help

 

The key trick is easy.. with the key in the off position, without cranking it over, turn it on-off-on-off-on and leave it on. The codes will roll thru in the digital odometer. On older trucks, the check engine light would flash a code.. Just write the codes down and a quick google search should give you some insight..

 

hey guys..just got back from autozone and had codes read this is what they came up with..p0593 speed control switch circuit is high..p2299 brake pedal position/accelerator pedal position incompatible..o0440 evap leaking said that is gas cap so I bought one..p0306 cylinder misfire on number 6..ok now that I have got that done any suggestions on where to start..got plenty of tools and if I don't have them know where to get them..thanks for all your help

 

If you get under the truck and look at the back of the motor up top on passenger side.. there is a ground that grounds to your floorboard. Its unshielded wire (no plastic round it). if its not making good ground your engine will do all kinds of crazy stuff like yours is..

 

ok.thanks will get under there and take a look..thanks for the help

 

What octane fuel are you using. Someone put 87 in my truck, my check engine light came on and the code read misfire in cylinder #5. Got all the crap gas out, filled with 91 and Lucas Oil injector cleaner, and the light went away. No problems since.

 

p2299 brake pedal position/accelerator pedal position incompatible

Is probably when someones been power braking.
Or have had either foot on the accelerator and brake at the same time.
That code always flags up when you do that.
Al.