looking at a 91 d250. I have questions.

[Swaggs]

hey, this friday, I am looking at a 91 D-250 single cab. I havent seen it yet, so I asked him if it was intercooled and he says, "he thinks so" It does have the overdrive transmission.. (he knows cause sometimes the OD doesnt work).. my questions, is I am not sure when they started doing the OD transmissions.. is it 91.5? so if it is overdrive will it also be I/C'ed?

also, about the overdrive.. does anyone know why overdrive might not work so well when its cold? I was thinking even if the fluid is pretty bad it might hinder shiftage..

thanks..

[Richie O]

If it is stock and it has a 4 speed auto then it will be a intercooled rig.

[Swaggs]

ok, thanks, thats what i was sorta thinking.. yea, it is stock.. it was stored for 8 years.. and this kid got it and has been driving it the last year.. Im thinking I am going to get it.. wish i could only get the powerjoke running to sell it. haha the wife is going to love another truck in the drive

[IowaCummins]

TPS -throttle position sensor could be going bad, i replaced mine with a poteniometer so i can set the rpm it will allow the overdrive to kick in. cost maybe $2 at most. very easy. just look it up on here and if you cant find it we can find it for ya

[1STGENFARMBOY]

If the spedojumps when the overdrive kicks out it could be the VSS.

Dar

[Swaggs]

haha, i want to apologize.. It was late when i posted this. i looked at the forum page and thought this said "conversations" haha.. i didnt know where to post my question otherwise and thought this would be a good spot..

maybe I should think about converting my short bus to a ctd..

[Richie O]

haha, i want to apologize.. It was late when i posted this. i looked at the forum page and thought this said "conversations" haha.. i didnt know where to post my question otherwise and thought this would be a good spot..

maybe I should think about converting my short bus to a ctd..

No prob. It happens all the time and usually I don't catch it to move it.

[bigreddog]

hey, this friday, I am looking at a 91 D-250 single cab. I havent seen it yet, so I asked him if it was intercooled and he says, "he thinks so" It does have the overdrive transmission.. (he knows cause sometimes the OD doesnt work).. my questions, is I am not sure when they started doing the OD transmissions.. is it 91.5? so if it is overdrive will it also be I/C'ed?

also, about the overdrive.. does anyone know why overdrive might not work so well when its cold? I was thinking even if the fluid is pretty bad it might hinder shiftage..

thanks..

I see this is an older thread. but to answer the question on the intercooler they didn't start putting them on untill '91.5