1995 gmc yukon trouble?
I HAVE A 1995 GMC YUKON, 5.7L. THE LAST FEW WINTERS IT WOULD IDLE ROUGH AND ALMOST DIE AND SOMETIMES ACTUALLY DIE. WELL THIS WINTER IT HAS GOTTEN WORSE, IT STARTED BOGGING OUT WHEN I WAS DRIVING ABOUT 30MPH. THEN AFTER I STOPPED AT A STOPLIGHT I GAVE IT GAS AND IT JUMPED FORWARD ALMOST DIED AND REPEATED ITSELF. WHEN PULLING INTO MY GARAGE IT ALMOST WOULD NOT MOVE. WHEN IDLING IT SHAKES REAL BAD. SOUNDS AND FEELS LIKE IT IS ONLY RUNNING ON A COUPLE CYLINDERS. I REPLACED THE FUEL PUMP LAST WINTER. YESTERDAY I REPLACED THE PLUGS, WIRES, DISTRIBUTOR AND DISTRIBUTOR ROTOR AND NOTHING. IT IDLES TERRIBLY AND RESUMES WHEN GIVEN GAS BUT ONCE IN GEAR IT SHAKES AND JUST WON'T GO.
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I am sure it's related to the injectors. I would take it to a shop and have it professionally diagnosed rather than trying to get it diagnosed here.
you have a pair of issues right here, and in all possibility would have broken the top gasket because of the fact which you have been seeing temps of 260F. you may desire to verify to work out in the journey that your steam is a leak or no depend if it extremely is popping out of the the tail pipe. i'm conserving my palms crossed for you. you probable put in the thermostat the different way up additionally.
Perform a dry and wet compression test on each cylinder.
Change fuel filter,check ignition system and check for codes.Could be something small.
Change the fuel filter.
check the throttle body boot, it may have a hole in it?