1999 Ford Explorer

Engine Performance problem
1999 Ford Explorer 6 cyl Two Wheel Drive Automatic 101200 miles

on hot days (temp over 90 degrees) ford explorer stalls, this normal happen during driving on the highway. When I push down the gas pedal the truck will not move it jumps jumps. I have to pull over to the side of the road turn the truck off wait for about 2 minutes start it again. Sometime it will runs for a while and somtimes it runs for a few miles. I have taken this truck to the ford dealership, goodyear auto and a local auto shop. The last thing replace (clean no repleace) was the Mass air flow sensor. This did not fix the problem.
the big problem I have is not one from the auto shop will drive the truck on a hot day for 20-35 miles to make the problem occur.

the only code that came up in the computer pointed at the MAFS. I can get the merchanic to replace the MAFs because he says it is not the problem.
August 12, 2008.

Check out the related content below while we wait for the question to be answered by a professional mechanic.