I got a generic TPS (p0122) and generic TPS (p0452) diagnostics result from a check-engine light. My Trac Off light is also on. What else can be the issue? When I am driving sometimes it slams in to gear or when I put it in drive? I replaced the TPS (p0122) and have learned there are two under the hood, perhaps I replaced the wrong one? Anything helps, thanks.
That's not the symptom of a bad TPS. Bad TPS causes hesitation in the same spot as you accelerate. Slamming into gear is a pressure issue and the GM uses input from the MAF sensor to determine transmission pressure. I'd start by cleaning the MAF sensor or testing it to see what it's reading.
SOURCE: vehical stuck in limp mode
This only applies if you have an allison transmission, which based on the problem you are reporting I would guess that you do.
It sounds like your vehicle is stuck in limp mode. This is probably due to a bad NSBU switch(Neutral, saftey, back up) (if you have an allison transmission. Prior to 2002 the NSBU switches had a very poor seal which resulted in water intrusion into the NSBU switch causing corrosion. If the switch is corroded it is likley confusing your transmission. Unfortunatly you cannot repair the bad switch, it needs to be replaced. If you order one through Chevy it will cost around 200 dollars. I found one at merchant Automotive for 91 dollars. ( http://www.merchant-automotive.com/allisonnsbuswitch2001-2004.aspx ).
The switch is relativly easy to replace. the electrical connections are the hardest part as they are glued into the switch. A little heat from a butane torch should soften it up and make the connectors slide off more easily. Other wise you may have to break the NSBU switch appart to remove the connectors.
I replaced the switch for the first time and it took me 15 minutes.
SOURCE: transmission slams into gears
you cant it a self seal transmission supposedly design to be maintenance free up to 100k miles which GM claims. my opinion is the worst transmission GM ever came out with. they should recall every single one of those car replacing all car with new transmission. If you leak and loose all the fluid you in deep trouble, I recommend take it to the dealership and have it look at. Supposing ly you have to brake tran-ny loose to fill the fluid. I hate to say be careful driving that car without or little of tran-ny fluid, you will burn your tran-ny very quick and the car will be no good. I hope that help
SOURCE: 2006 Chevrolet impala lean code issue
Unplug the sensor harness and re-connect a and c terminals using jumper wires. You should see about 4.5volts or a bit more from the center terminal (meter(+) to terminal, other lead to good ground. Do this with key on, engine off.. With engine running, (same hookup) You should see a different and varying reading that changes with rpm. Before testing check the vacuum hose going to the sensor to make sure it's intact and has vacuum or test will be invalid. Test procedure I outlined is the last one I remember. Possible GM changed procedure, so best to check a manual if readings are different than what I stated. There are other items that can change mixture but I have seen this a few times. Otherwise, you will need to go through system item by item before finding anything.
SOURCE: 2002 z24 cavalier reading error codes po340 and
P0113
P0340
Camshaft Position Sensor Circuit Malfunction
Intake Air Temperature Circuit High Input
TPS not mounted securely.
TPS circuit short to ground or another wire.
Faulty TPS.
Damaged computer (PCM).
to fix this code you can try this:
Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.
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I recently have replaced the motor mounts on my car, which is why I have brought up the issue of the engine "slamming" into gear. When a vehicle shifts gears the engine slightly "rocks" as it changes gears and since this check-engine light has come on it has been "slamming". I can only see that the two are connected. My question is knowing that there is not a transmission issue should I replace both TPS sensors? or even have the voltage tested for both? can the TPS be tested not connected? Again anything helps, thanks.
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