Quote:
Originally Posted by swet158
I’m having a similar problem. Just bought a 99 with the 3.4. It had a couple bad injectors and the CEL was on steady. I replaced all the injectors and 1 coil pack for 1 and 4. Now the CEL flashes at highway speeds. Around town and under 65 MPH no CEL flash. The code indicates an intermittent misfire. There is no indication of a misfire, the engine doesn’t stumble and purrs like a kitten. All the plugs look beautiful. I’m stumped.
|
I'm not getting a CEL for any of this. I am thinking it's the A/F Ratio that's getting messed with. There are two sensors on the throttle body that I am going to check out today.
Then I am going to test the wiring to the injectors.
Wiring might be the issue because the truck had rat poop in it, and i found one short lead that needed the insulation taped, so checking for grounded wires might be a solution.
Then I am going to do a leak-down test.
Something is amiss, and I am hoping it is not the head gasket, because that will kill my travel plans.
Hope you find your issue soon, maybe it will fix mine!!
Ciao,
Michael
