MAP Sensor

[Mountain Main]

What year Ford's Vehicles can I take a Map Sensor out of? I have replaced this sensor two times and it is a hundred and forty dollars a pop from the ford dealership. I am sick of it.

I think I was blowing them up when I hooked the Neutral Safety Swith up with 12 volts. I want to go to the junk yard and save some dollar bills.

Thankx

Mountain Main

P.S. New Digital Multimeter from Snap On coming in tommorrow. Yeah!

[PKRWUD]

Okay, what are you talking about? You lost me. Did you put a manual tranny ECM in an automatic tranny car, and not cut pin 30?

How did you determine that you "blew out" two BP sensors?

[Mountain Main]

I went from a AOD to a t-5. I originally hooked up the switch that is on the clutch with 12 volts. I took it to a speacialty shop and then I believe they hooked the clutch switch with 5 volts and then installed a new MAP and the computer. I drove it back two weeks later and helped install a manual transmission harness that goes to the cruise controll box. But I think when they were diagnosing the problem they installed the MAP sensor before they did the MOD's.

This has been very expensive I had to live and learn.

[Mountain Main]

We tested the Map and PKERWUD thought it was bad.

[Old Guy with 87 GT]

ok ...i'm lost now .....i would think that the map(or bap) would be wired the same on either harness (auto or man)....as long as the harness is still for a mass air car(i'm not positive thuogh) .......if it goes bad on a mass air ecu ,it shouldn't effect a whole lot other then start up .........?

as for the nuetral safty switch ,i'm not familiar with the wiring schematics at all .....i would think that the safty switch circiuts would be seperate from the ecu's engine controls .......:confused:

just for the sake of curiosity ,keep me updated on what you find out

[tmoss]

Here is a diagram of the 88-91 EEC pinout. The clutch switch does get 12v and the neutral switch tells the EEC when the trans is in nuetral for a T5 so that it will give codes.

[Mountain Main]

I think I need to check the wiring for the MAP/BP? I just got my new DMM in and I am looking forward to using it. The DMM has a Data hold, bonus! The MAP/BP is only a year old. If it is the MAP/BP why would they be failing. VREF?

Thankx

Mountain Main

[Mountain Main]

I have a question on how the MAP and how the Oxygen sensor enter acts with each other? Will an oxygen sensor ground throw a Map sensor Code? They are obviously not on the same wiring diagram circuit. What cruise strategies do both of these take?

Thanks

Mountain Main

[tmoss]

The MAP and O2 sensors only have the EEC as a common point and the EEC only reads each as an input. I doubt a grounded O2 would throw a MAP code.