Check engine light came on. I finally replaced the throttle body assembly which seemed to fix the issue. I let the car sit for about 10 days. I started it up and the engine light came back on. It now is missing on the cylinder under the turbo. What would cause it to start missing like that?
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Re: 2002 eclipse check engine light
Either a bad plug, dirty plug, bad plug wire, not quite broken wire, bad or going bad coil, dirty injector. I would reset it first and make sure it comes back. If it does I would check the aforementioned items first.
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The reduced power light is pertaining to the TAC - electronic throttle control . Is the check engine light lit ? If not still may have a DTC -diagnostic trouble code stored . You probably have a bad TPS - throttle position sensor .
Throttle Body Assembly
The throttle body for the throttle actuator control (TAC) system is similar to a conventional throttle body with several exceptions. One exception being the use of a motor to control the throttle position instead of a mechanical cable. Another exception is the throttle position (TP) sensor. The TP sensor is mounted in the throttle body assembly. The TP sensor is 2 individual TP sensors within the throttle body assembly. Two separate signal, low reference, and 5-volt reference circuits are used to connect the TP sensors and the powertrain control module (PCM). TP sensor 2 signal voltage increases as the throttle opens. TP sensor 1 signal voltage decreases as the throttle opens.
I had the same problem in my Yukon Denali And after 4 throttle body's, replacing gas pedal, rewiring the grounds replacing sensors, took it to not one but two GMC dealerships who were useless they can't fix their own trucks they're not the brightest !!!! After thousands of dollars I found a mechanic very familiar with this issue you want the solution it will cost ya 500$ for me to tell ya!! Just kidding I know how frustrating this problem is okay here is the fix the problem is these electric throttle bodies are GARBAGE!!!!!!! Don't matter what u do or what u replace it will come back on unless u convert your electric throttle body to the old cable throttle the actual fix was 900$ but I spent thousands and thousands trying to fix it!!! Please save your money and tell ur mechanic u want to convert to the old cable throttle!!! Gmc is well aware of the problem but won't fix it for u cuz they're useless
Hello, sounds like a dirty throttle body. try cleaning out the throttle body bore with some throttle body cleaner. remove the air box from top of the engine assembly. there are two 10 mm bolts that hold the box in place.clean out the throttle body real well using cleaner and a shop rag
all the codes point to throttle body. clean throttle body, especially around throttle plate. check for loose wires, if problems persist. replace throttle body. p2104 is tac system forced idle, p2111 is tac system stuck open, p2112 is tac system stuck closed. clean throttle body good, and see if this fixes it. then go from there. have a good day !!
i would suggest cleaning the throttle body before adjusting anything, disconnect the air cleaner assembly from the engine and have somebody hold the gas pedal to the floor with the engine off and use some carb cleaner and spray it on a rag and clean all the black stuff out of the throttle body that is just beyond the throttle plate that opened when your helper pushed down the gas pedal,that should cure your low idle problem,hope this helps
This is ironic. I am on hear searching because the same thing happen to me today. replaced the battery and was having the smae idle issues. After a few hours of investigating and looking for air leaks we ended up with the intake into the throttle body housing loose and found alot of build up in the throttle body housing. Cleaned it out with carb spray and problem seems to have gone away for now. Not sure if this helps but this is where I am so far. Also check engine light was on and the tech erased it after cleaning and it has not come back on. Code was for mass air flow sensor and I originally tried a new one and it didn't change anything until I cleaned the carbon build up in the throttle body housing.
You possibly accidentally broke, or loosened a vacuum hose that is connected to your intake system. Intake vacuum leak is 95% of the time why a vehicle won't idle. Even sometimes the boot , if your engine has one, that slips over the throttle body and goes to your air cleaner element is not tightened down will cause an intake leak and no idle condition. Easy way to check if you have an intake leak would be to start the engine and while it is running spray some carburetor cleaner around the intake manifold area or where you suspect a leak and if the rpm's increase , that's it.Use the carb spray sparingly and don't go overkill, if you know what I mean. Good luck
Yup. The throttle body connectors have a history of failing on these cars. Replace the throttle body and the wire connectors that go to it, and you're back in business. Not terribly difficult and you can get the parts from any dealer. Saturn actually has a bulletin out on this problem but they won't cover it unless you're under warranty - no recall for this.
mine had the same problem, check into a new computer for it..more or less the ECM part...i had to replace all the computer in mine and seems to have fixed it. does it also have other quarkie electrical things..like gremlins...if so it the computer. Good luck