Throttle body reinstalled, firebird idles at 3k rpms?
I reinstalled my throttle body and connected everything together. whenever i start it, the engine revs right up to 3k rpms and sits there.. im thinking i may have a vacuum problem or could have disconnected something wrong when reinstalling the throttle body. anyone know what i can do?
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Bad idle solenoid. Located on throttle body. It's black. Plugs in to wiring cable. You need a torx bit to remove. It's a cheap and easy fix. Also, get some throttle body cleaner and a tooth brush. Saturate the inside of the throttle body with cleaner and scrub out the black soot. Do this with throttle body in wide open position. Be sure to clean the edges of the butterfly good. They soot up and stick preventing throttle body from closing all the way.
The first thing I would do is try to relearn the idle. To do this, first disconnect the negative battery cable for a few minutes, then reconnect the cable. Then using an unfolded paper clip jump terminals A and B in the connector under the dash near the steering column, then turn the key on for about 5-10 seconds, and then turn it back to off. Remove the paper clip. Set the parking brake, and make sure everything is turned off, radio, heater, everything. Then start the car and do not touch anything. Let it idle until you hear the cooling fan come on and then go off. Then turn the ignition off. Process complete. If this has no effect on the cars idle, it's time to replace the idle air control valve and clean the passages in the throttle body. As a side note, you really don't want to have to replace the fuel pump, That involves removing the rear-end and the exhaust system from the car, your fuel tank is located above those assemblies.
Your idle air controller (IAC) is hanging up and it needs to be removed and cleaned-remove the throttle body and clean everything, it makes taking the IAC out to clean much easier. IF you don't have a check engine light, you will soon. Cleaning the throttle body, the IAC and checking the throttle position sensor is very easy to do on these engines, I have one with 178,000 miles on it.
Sounds like an idle problem. The solution should cost you nothing. Remove the air trunking between the air cleaner and the throttle body. Have a clean cloth and some WD40 spray ready. Clean the throttle interior and the outside of the throttle plate. Apply pressure with your finger tips to the throttle plate to rotate it and continue cleaning the throttle area behind the plate and is possible the back of the throttle plate itself. Pay special attention to the edges of the throttle plate. Mounted onot the the throttle body exterior you will find the idle air control valve. This is an electrically operated device that permits measured amount of air past the throttle plate when the engine is at idle to ensure that the engine does not stall. These idle controllers can take two forms a) a simple valve on a passageway around the throttle plate or b) a geared motor that opens the throttle plate a tiny amount. Which ever system is used everything should be spotlessly clean. The IAC valve body can be removed to aid in the cleaning process. Take care not to rip any gaskets etc as you can use them again during reassembly. With everything cleaned up it should be much better. Put everything back together.
If problem persists check all vacuum pipes making connection with the inlet manifold for leaks; spraying suspect areas with WD40 will result in a small jump in revs if you hit on a vacuum leak. Also check that your EGR valve is functioning properly and is closing at idle.
Try spraying the idle air passage in the throttle body with a carbuator cleaner while the engine is running, you will have to hold the throttle to keep the engine from dieing.If that helps a little than you may have to remove the idle control valve from the throttle body and try cleaning it out with a carburator spray cleaner and also spray clean the idle passge in the throttle body.Or you may have to replace it,
The idle vale should be on the left side on the side of the throttle body -- passenger side --- with two torx head screws holding it down. It has a three wire quick connect plug that looks like a race-track--- rectangular/oval.
Try cleaning the throttle body, Remove the intake hose that connects to the intake and air filter box. You will need a can of throttle body cleaner $6. and clean rag. Spray the cleaner in the throttle body and you will see black carbon build up running out of the throttle body. clean the butterfly, which is what opens/closes when the throttle is open or closed inside the throttle body. repeat 2-3 times and wipe it dry and clean with the cloth, be sure not to leave any material inside the throttle body. re-connect what you removed. It will be hard to start for a second, don't worry it's the cleaner. After start up let it run for a minute and test drive. Cheap fix on alot of vehicles.
Your idle air control valve may be dirty or the wire harness may be damaged. First try cleaning the throttle body with throttle body cleaner and make sure you use all the can up and try to get the idle air control valve cleaned. A faulty or dirty idle air control valve will cause engine to stall when put in to gear from idle. Good luck and hope this helps. Keep me posted, be glad to help you get your car running 100% soon.
sounds like you have a major vacuum leak. Plug the throttle body completly with you hand. If the car does not stall out there is you idle problem. Take carb cleaner spray vacuum like throttle body gasket intake gasket etc. Hope this helps please rate me.
Listen for a hissing sound you could have a vacum leak . spray carb cleaner around the thodle body and the intake to see if you have a bad gasket or just needs to be tighting.also check the choke and throdle pationing sensor it could be stuck open!