Hello, I had a problem the last 2 days with a high idle issue. I had unbolted the MAP sensor for whatever reason and then bolted it back on and then SES light came on. My scanmaster showed DTC 33,34 which is the MAP. My Wideband gauge also went so lean that it wouldnt register on the gauge anymore, The IAC count on scanmaster is 160 and the O2 MV is around 240. All of thgis is at idle. IM pretty sure the MAP sensor codes are from a faulty Connector, but what is the issue with these other problems. These all came at the same time when the codes were thrown. The car seems to idle fine now but I know there are issues somewhere here. My IAC count used to be around 57 and the O2 used to cycle between 200 & 870 theres none of that going on now. Any Suggestions

 

Did you install the seal that goes on the MAP sensor piece that sticks into the manifold?

 

Yes, I reused the Stock one. The new sensor didnt come with a seal. I mean the car was fine yesterday morning. & now its **** and the only that has been touched is the MAP sensor.

 

Well I found the problem,I adjusted the idle screw a touch just enough to get the IAC counts down and enough to get my AF gauge to register a number. Once i did that i scrolled through Scanmaster and MY IAC counts were 0. So now i figure i had a vaccum leak. Which i did look for before. But down to the right of the PCV valve on the intake the rubber cap came off one of the bigger ports. So i fixed that and then i moved the idle screw back down a little and everything seems fine again. Ill tell the scanmaster really saved me a lot of time and it was well worth the money i paid for it. The best 175.00 I have spent on this car. Thank You