Hey Everyone,
I am new to this fourm and it seems like great thing. Anywho, I just bought a 1992 explorer with the 4.0 . It has been somewhat troublesome since the day I bought it. When I took delivery of it it wouldn't start, so I called the guy who sold it to me and he said to tighten the negative batt cable and wait a few secs so I did. It started and ran fine. Then when I got it home it sat in the driveway a few hours and I got back in it and drove half to my girlfireds house (she lives 30 mins away), when I got halfway there it started to surge at the stop lights at idle. When I threw it in park it seemed to do fine. So I got to her house and turned it off. We came back to it about an hour later, and guess what, it would not start! So I fooled around with it for a while, and then I had her give me a jumpstart. At this point I was starting to get really pissed! I got the truck home and the next day I put a starter on it and it seemed to fix the starting problem. It was still surging, so 120 dollars later at a mechanic shop, he said a bunch of vacumm lines where loose. So now it idels fine and no weirdness. The next day when i went to start it, it quit, then I started it again and it idled real rough. But after a few min of driving it runs fine. It only idles rough at starts. Now after about 30 mins of driving the oil pressure gage goes to the low point, it only does this at idle with foot on brake, like at stop lights. When I take off it goes back to normal. This car so far doesn't use a drop of oil, and this oil is still clean after 2 weeks of drving. Also, it DRINKS the gas! Does anyone have any insights. Any ideas would be appreciated. Thanks Sean:-(

 

first it won t cost nothing take the idlevale off 2 bolts an unplug wireslocated driver side of intake then take an clean with carb cleaner dry it good you ll see it has like a plunger vale in it if its black and carbonup could be your problem

 

Hey,
Thanks for the help it seemed to fix the problem. I gave the inside of the sensor a good soaking wirtht he stuff and the truck has never run better!
Thanks again,
Sean

 

D,
Can you explain what you did to solve the problem? I'm having a hard time following what zippy was trying to get at in his post.

Thanks

 

Pretty easy for me and Dwarwick to follow, try keeping up here. On your throttle body remove the Idle Air controller which is held on with two bolts. An electrical connector must be disconnected if you want to remove the unit from the truck for cleaning. Clean it with Gumout or other carb cleaner and reverse the process to reinstall. Plain as day.

 

[updated:LAST EDITED ON 19-Feb-02 AT 07:01 PM (EST)]Just in case.. Here is a pic of the part.. It is actually easy.. 2 8mm bolts (might be 10mm) and 1 elec connector and it comes right off. If the part is actually bad, a new one costs about $75 from carquest. I replaced our first one at 165k miles..

http://mark.legendz.com/explorer/tps-aic.jpg