Haven't pulled the codes yet..
At 70, in my 95 suburban, I get an very slight stumble at 70 after the engine is warmed up accompanied by the "service engine soon" light. The light stays on for a few minutes then off. It contiunes this cycle if I stay above 65.
Below 65, no problems.
Anyone seeen this before.

Chris
95 Suburban 2500 6.5
remote FSDEdited by: eppoh

The code would help tremendously in determining the nature of the problem.


Do you have the 12 pin ALDL or 16 pin?


With the 12 pin OBDI, it's a snap to jump pin A to B with key on code will flash, first one digit then the second.


Chris


On edit: I have experienced smiliar occurences with DTC36 and a worn fuel solenoid armature.Edited by: quantum mechanic

Optic sensor and Fuel Solenoid problems pop into mind first, a weak supply pump, plugged air or fuel filter, weak vacuum pump, faulty WG Solenoid, any number of things, need to see what code is being tripped.

Pulled the codes and it said turbo wastegate malfunction. Decided to go cheap and simple, bought Bill Heath's turbo master. Pretty easy installation ( once I got the right one) and problem solved. Neat design and now I can get rid of that vacuum pump next time I change belts.
Chris
95 Suburban 6.5TD

Chris avoid temptation to hogg down the spring for the TM for max boost, go too far and you will jack up IAT and PCM will go into protection mode clip fuel since it can no longer control WG, and also MAY set a boost out of range code.

Right, I have it set to the factory boost spec. It is my wifes's burban and we don't tow anything.