A donation is not necessary as this is a free service. However if you feel inclined to do so next time, it can be done when the question is asked and then your question will be responded to usually within 24hrs. I appreciate the gesture.
Now back to the problem. It's unfortunate that there are a lot of poeple just trying to make a buck but throwing parts at a car solves nothing most of the time, just empty's your wallet. Throwing a throttle body at it may work but if it doesn't your out another grand. Here's what I would try first. Below is a diagram. The circled image is your throttle body. The arrow is pointing to the connector at the throttle body. Now this image is reversed so the throttle body will actually be at the back of the motor. Find the connector I've draw the arrow to.
Now disconnect this (car off keys out). What I want you to do is look at the internal connectors (small pins). Do any of these have any sort of corrosion on them? Is their oil in the connector? Do they all look clean?
Next, holding the plastic connector in one hand pull on the wiring to it slightly and look at the pins. Do any of them move backwards? Do any appear to be very loose?
What we are checking here is to make sure that this is not being caused by a floating electrical pin. Sometimes the plastic retainers can become brittle over time and will actually pull out slightly due to movement of the motor. This creates a very intermittent and nearly untraceable issue.
After you have inspected the connector, plug it back in. Now with the vehicle in park and the motor running, rev the motor. If you have throttle response continue. Now have a friend lightly pull on the harness of the Throttle body. Give it throttle again. If you loose throttle response at anytime here your electrical connection is your problem and can be remedied by replacing the platstic electrical connector.
If you have no change, try this next time the issue happens. Turn the vehicle off and disconnect and then reconnect this electrical connector. I have a feeling that your issue is more wiring related than component related. Get back to me with any results, also next post if you can give me your vin # I will check for any know wiring or throttle issues for your particular vehicle.
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Monday, February 16th, 2009 AT 5:35 PM