the intake gaskets are prone to leaking. Get a hanes book and good luck Actualy, the intake manifold has 2 different versions. The first version is prone to leaks. The second is much better. Also the replacement throttle-body gaskets(GM# 12580919, $40.00) fit BOTH versions and have been redesigned to help with this. The coolant passageway is located at the very bottom of the throttle-body. Your engine sometimes idles rough because it is also leaking into the intake manifold. I won't go into details here, but it should take you only an hour the first time using common hand tools. I'll warn you that the throttle-body is fragile and you do not need to remove any sensors(doing so will sometimes strip the threads or break the screws off!).
In the throttle body.
right in front of the thermostat on the bottom rad hose beside the thottle body
The thottle body is connect to the plantum right in front of the air filter housing the throttle cable is connected to it.
If the vehicle is in neutral or park and it doesn't rev over half throttle, it is the rev limiter (governor). That is normal.
have them check the codes , but prob will be the throttle position sensor is out of whack.
The MAPP sensor is located on the passengers side of the thottle body. Remove the "dog box" and when looking from the inside of the vehicle you should see it on the right side of the thottle body. It's kinda tricky to remove ...but it is do-able. Good Luck ... hope this helps. MR. X
Yes it could be the throttle body and this was the case with mine. Mine would be stuck when the car was not used for a day or so but otherwise worked fine. The accelterator had to be pressed hard and when it broke free, there was more than desired acceleration. I found the thottle body to be gummed up pretty bad particulaly on the down stream side. I could not clean it well without removing the thottle body. Once I had it removed, cleaning was easy with some carb cleaner and a toothbrush. Cleaning the throttle body restored normal function.
There's good news and there's bad news depending on what you're really asking. The bad news, if you're asking how to replace the throttle position "sensor" you can't. The sensor is part of the throttle body assembly and the whole thing has to be replaced if the sensor is faulty. The good news, throttle body replacement is very easy. 1. Remove negative cable from battery. (note your radio settings if needed because the radio will lose memory settings) 2. Remove air intake duct from thottle body 3. Label than disconnect any vacuum/coolant lines attached to the throtte body. If there are coolant lines, plug hem to prevent losing coolant. 4. Disconnect electrical onnector from the Throttoe Position Sensor 5. Remove bolts/nuts holding throttle body to engine 6. Pull throttle body and gasket away from intake manifold You're done. Replacement is exactly the opposite. Once you've reconnected the battery you'll have to reset the radio settings and your moonroof/window settings if equipped. Your owner's manual will tell you how to do those things. Cheers
lookin at engine from the front it is located to the right above the valve cover close to the thottle body. has a wire and vacume hoses on it
It's located on, but right below your thottle body with 3 screws like a sensor. You will be able to find it if you take off your stock/aftermarket Intake.
As far as I know the only road speed governor would be an aftermarker unit. It can be removed but you would have to know what you're doing. The ones I've seen take the thottle cable off the thottle body and run it to the aftermarket unit. Then a new cable from the unit back to the thottle body. I guess you could hook the original cable back to the thottle body and "by-pass" the unit. Rich
Irk but it feels like it at half thottle