SOURCE: From N to D
I would check the transmission control unit sounds like a software problem. The dealer might be able to just do a reset Good luck.
SOURCE: honda accord 1996 v6 2.7 liter,rpm gage jump up and down
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
SOURCE: oil pressure gage
At idle, at operating temp is there any ticking from top end of engine? Are there any knocking noises brom bottom end?
If no noises, change oil and add some Marvel oil to clean out galleys. If that dosent work, change oil pressure sendingf unit. Also, if you have a mechanical oil pressure gauge, hook it up and take a direct reading. Oil pressure (in any vehicle) at idle should NEVER be less than 15psi. Generally in 4.0 jeep engines it's never less than 30, with a high reading at driving rpm of about 40-60! (but, you did not mention what engine you have)
SOURCE: 1.8T with cold start problem.
The engine temp sensor is located at the back of the engine above the gearbox. It is usually green with 4 wires if there is only one sensor, or 2 wires if there are 2 seperate sensors. make sure engine is cold, remove plug, then slide clip out and pull sensor free.
TL
SOURCE: chevy trailblazer 2004
Check the gages by turning the key's to the run position and see if the gages work. If not check the fuses and then work your way to the wire harness. Good luck
Miles? Have you replaced ignition coils recently? Pretty good chance that they could be going bad. I would start by swapping all 8 coils and plugs and probably changing the valve cover gasket as well as those are known to go bad in the 2000-2003 LS
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Same exact problem 77000 miles.
I have the same problems at 72,000 miles. Does anyone know if there has been a recall (2003 Chevy Trailblazer)
Why is this listed as an Audi? The tach is electronic, you will need to send it out to a GM repair center, check with the dealer for a name in your area, the dealer does not do this repair, it is sublet..
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