washed the mj and then.....

i washed the engine compartment on the mj and then the thing won't idle for shit and then stalls. Then, we took it out and the thing wouldn't leave forst gear. What gives?> I figure I got some water in some wires or something. Any idea of what controls this and where to find it?
THankyou again guys
brad

it sounds like you soaked the tps, if drying out the connectors doesnt help it will need to be replaced

forgive me for my lack of knowledge but what is the tps?

its the throttle position sensor. it is located on the front of the throttle body. if it is an auto it has 2 sets of wires comong from it. if it is manual it has only 1 set of wires coming from it.

i'll echo that diagnosis... i dont wash my engine anymore just for this reason....

mike

Ditto

The TPS does not like water, especially under pressure

thanks again gents. I appreciate your expertise. Now, what do I do to rectify the problem?

jneary said:

its the throttle position sensor. it is located on the front of the throttle body. if it is an auto it has 2 sets of wires comong from it. if it is manual it has only 1 set of wires coming from it.

Click to expand...

It's actually at the back of the TB, not the front. The TPS connector may be cracked and if water gets into it, it'll cause the idling problems that you've described. The same also applies to the sensor itself.
If you're lucky, replacing the sensor will rectify the problem but if it doesn't, you may need to replace the connector as well (if you can find one from a junkyard).
When my connector went bad a year ago, I cut the wires going to it, removed it altogether, soldered three new wires to the pins of the sensor, and joined the wires to the wiring harness. I then sealed the recess in the sensor with RTV silicone to keep the water out. It's worked great ever since.