1987 ranger help please

[johndeeregarner]

I don't think that it would rev high if it had a vacuum leak. You'd think it would run ruff.

 

[BlackBII]

I don't think that it would rev high if it had a vacuum leak. You'd think it would run ruff.

Well, if it has a vaccum leak, then it'd be sucking in more air than it should, and it's going to rev a little higher, depending on the size of said vaccum leak.

 

[zdewald]

no i havent had theTFI checked out. what is the TFI?. i have looked and cant find any vacuum leaks.


but i scanned it again tonight and got KOEO
67 o
84 o
10
22 c
63 c
33 c
29 c

KOER
25 R
32

 

[BlackBII]

Well, with those codes, looks like you have issues with the MAP, TPS and EGR...

http://www.therangerstation.com/tech_library/2digitcodes.html

 

[Psychopete]

...

TFI is the gray box on the side of the distributor. It functions sort of like a translator between the pickup in the distributor and the computer itself.

You wouldn't happen to know what color your reference voltage wire is on your TPS sensor, would you?

I wish I had a specific diagram for an '87, but on a generic one, ironically it looks like (note the word LOOKS ) there's is a reference voltage (5 volt constant) from the computer that runs to the MAP, TPS, and an EGR component. Sounds like you might have a wiring problem...

Pete

 

[zdewald]

i think that thos might be old codes. i cleared them and i will scan it again 2 morw and see waht i get than. i got a video clip of it doing this but i dont know how to put it on here

 

[Psychopete]

i think that thos might be old codes.

FWIW, Wiring problems are sometimes not consistent. Just something to check out.

Pete

 

[zdewald]

i dont know maybe
here is a video of wat it is doing
http://www.youtube.com/watch?v=rVuo5tbYLXs&feature=player_embedded

 

[Psychopete]

I just reread the post and realized that you unhooked a bunch of sensors, LOL, that is probably why you're throwing so many different codes from CM. What is left of the EGR system?

Pete

 

[zdewald]

its all there but the pipe has been pluged, the vacuum solnoid i unpluged the power to it.

 

[zdewald]

ok I think I got it. when I start it in gear it revs up like that. but if it is in neutral I don’t do it. I believe this is what is making it do it

 

[Cyberbeer]

Nuetral Switch on the tranny maybe?

 

[zdewald]

could that make it rev up??

 

[zdewald]

ok it is the Nuetral Safty Switch. i dont have a clue why it is making it do this. but i took the shifter boot off and unpluged it and it makes the engin rev everytime i start it.

 

[zdewald]

so i take it that no one knows