Tps has been replaced and still is not fixed. It dies when accelerator is pressed, jumps and misses, let of on the acc. and it catches up and accelerates sluggishly. Can the be caused by a bad mass air flow sensor also. What steps are required to troubleshoot and repair. Also could this possibly be the ECM.
Hi, P0122 code i think reads as "low input" on the fault text, if thats so, the fault is most likely with the wiring to/from the tps, low input codes would usually relate to a short on the wiring so check for any chaffing or corrosion on wires and multiplug connectors, ideally you need to check voltages at the tps connector.
SOURCE: black smoke and sluggish when accelerator is fully depressed
It seem like a vaccumn problem. Check the vaccumn lines especially the one going to the fuel preassure regulator. or it could be the regulator itself.
SOURCE: 1997 buick lasabre custom high idle, transmission, stalling
had same problem i would check the Idel Air Valve and also check all of your vaccum hose lines makeing sure there are no cracks or splits in rubber connectors if there is repair immediatelt because over time they start to dammage the internal parts fo the engine and if youve replace tps mass air etc. sounds like a vaccum hose problem
SOURCE: bogging and hesitation on acceleration iddle is fine
You definitely covered most of the bases. Considering all you've done so far, I would check into the fuel system next. First, how old is the fuel filter? Has it been changed? Yes, a bad filter can cause the problems your having. Next would be the fuel pressure regulator. You need a fuel pressure gauge to check it, which you should be able to rent from a good auto parts store. That will also tell you how good your fuel pump is, i.e. if the pump can deliver the necessary fuel pressure off idle. After that, I would check the injectors themselves for wear or blockage. A bottle of fuel injector cleaner in the gas tank would be a good idea, cheap, quick, and it wont make anything worse. If all that checks out, check your catalytic converter, a clogged or bad cat will also do what your describing. Good luck.
SOURCE: trouble code p0102 mass air flow sensor, could
It could be a dirty air filter a, spark plug, spark plug wires.
a leak in the air intake system or the mass air flow sensor
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