Chenn2389
Active Member
Hey all. Having an issue with the car stumbling and hesitating on the highway while cruising. It feels weird, will be cruising then I can feel the power and rpms start to drop and then it jerks back and does it intermittently. I changed out the fuel pump with a spare I had and took my bbk fuel pressure regulator off and put on a new motorcraft unit as well. This solved about 85% of my running issues with surging idle and lean condition codes. The only things I can think of is I am still using the alternator that came on the car when I bought it. Its of unknown brand and amperage and has significant whine under acceleration in 1st and 2nd gears. The new motorcraft 02 sensors may be shit and need warranty I might call summit to get them swapped out anyways just to rule it out. My BBK maf calibrated for 24# injectors may have a bad calibration. TPS might not be giving good reading, but I did voltage test it through the whole range and there was no issues. Or I need to get my tune looked at again. The engine is new and im so close to finally having it running well.
I have smog pump, egr, thermactor, thermistor all removed and tuned out of the code.
I have smog pump, egr, thermactor, thermistor all removed and tuned out of the code.
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