problem with a 1991 pontiac grand am

problem with a 1991 pontiac grand am
i have a 1991 pontiac grand am with a 2.5 i started having problems with it it won't idle it stalls out when i try to get it to idle.i ran the codes it gave me and it said to replace the mat and the map sensers.i did that and it is still stalling and it is not sending any more codes.if anyone may have any ideas please e mail me at james_burch1982@yahoo.com.
thank you

posted by  jamesburch1982

what codes?

posted by  tbaxleyjr

it was showing a code 25 and 33 mat and map sensor i replaced them both.

posted by  jamesburch1982

i would guess they both have the same 5v ref wire from the computer, get a wiring diagram and check the wire for an open or short.

posted by  BanffAutoSpa_ap

The two devices share a common 5V ref. signal on GM A Body and A body special - I suspect the GM N bodys w/ 2.5L L-4 are similar

posted by  tbaxleyjr

my thoughts exactly ;)

posted by  BanffAutoSpa_ap

anyone know where i can find a vacuum line diagram for a 91 grand am on the internet for free.

posted by  jamesburch1982

how's this

posted by  osborste

there is a hose comming from the transmission and it is cut i can't find the other end.it comes out of the top.any ideas.a couple people said it is a vaccum line.i don't know.clueless.

posted by  jamesburch1982

This is going to sound pretty easy, and I'm sure it is, but i can't get the speaker covers off of my front speakers, short of just ripping then off. I don't know if there is some sort of clip, or what. One of them is blown out, i just want to replace it. If i could get the cover off i could probably do it in my sleep. If anyone knows how to get those covers off short of just tearing them off, just reply. Thanks

posted by  rkoz1216

This is going to sound pretty easy, and I'm sure it is, but i can't get the speaker covers off of my front speakers, short of just ripping then off. I don't know if there is some sort of clip, or what. One of them is blown out, i just want to replace it. If i could get the cover off i could probably do it in my sleep. If anyone knows how to get those covers off short of just tearing them off, just reply. Thanks

posted by  rkoz1216

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