Vacuum line???

[B33p3r]

2 rough idle problems I've come across are: IAC valve sticking and air intake duct not sealed well. Both are easy to ckeck and correct. Hope it helps.

[marquis00]

Originally Posted by carlos80

Newer vehicles no longer have the modulator valve.

Is there any way that you can get the parameters to display in voltages. I don't know if you MAF(air flow) reading is correct. Both MAF and Intake Air Temp IAT sensor are one assembly if ones off the other could also be faulty. The MAF reading should be at around 1 volt, at idle and climb as vehicle moves(accelerates), if you are able to get them to read in Voltages.

oh, the program i was using sucked, so i got a new one and this shows better parameters. the intake air temp is about 129 degrees F and engine temp is about 188 degrees F.
no it looks like the program doesn't show volt, but i haven't figured out all the program features.

[marquis00]

do the 01 explorers have map sensors anymore?

[carlos80]

No its a MAF(mass air flow)sensor. IAT(intake air temp) is incorporated into the MAF sensor assembly. You said you got a better program, what are your Long and Short term fuel trims? Can you get and IAC reading?

[marquis00]

there are the specs from the other program





http://aycu01.webshots.com/image/280...8739091_rs.jpg


let me know if it can't be read.