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Hello everyone i'm shopping for a computer for my omni i bought one from Cindy a few years ago, today i get nothing from the computer , now i,'m wondering if that is the best place to go for one, i.'m asking because i'm reluctant to purchase one in case it's faulty, what would you do in my case. the car is an omni 86 with up graded wiring for a map under the hood four wire tps, i used to get a code from the computer now i get nothing what do you think. Awaiting your response thank you!!
When you say you get nothing from the computer, what do you mean?
Does the car start? Are you simply not able to read codes?
Could possibly just be a bad "Power Loss" light bulb in the cluster if that is the way you are checking codes. You should still get the "55" even if nothing is wrong and bulb is good.
is it still a LM setup?
check and clean the red and blue connectors... especially if the plastic bag isnt on the LM anymore.
Brian
check power loss lamp , bulb first
put key in , turn to run
power loss lamp should stay lighted every time for 1-2 seconds for a bulb test at every start
if no power loss light then either the bulb is simply done or you have a problem to hunt
if you need to change the bulb then first removing the plastic covers from the steering column is the first thing to remember
3 or 4 screws, from below
this allows space to remove the cluster without scratching up the top half cover for the column
Nothing at all, just blank, i used to be able to get codes from it and then nothing!!
I'm not understanding any of this, another thing sometimes you turn the key on and the pump works, but nothing from the computer, usually everything is dead go figure!!
I'd try changing the bulb before I chase a problem that may not exist
if swapping a known working bulb already in the cluster then you should have the answer very quickly
and if the bulb's dead AND you have an issue you should also then get the codes once it's changed
a 33 year old light bulb deciding to "retire" I would not doubt for a second
You really think that is all it could be, ok i'll take it down and check it, Thanks what a pain in the --- this is!!
sadly until you check the bulb it's self you don't know if you have a problem or not
and as I said start by removing the steering column covers - screws go up from the underside of it
that saves scratching up the top cover when you pull the cluster
black bulb socket twists out of circuit board , bulb then pulls out of the twist in socket base
(if you haven't been there before)
Thank you Tryingbe this is very good info. Blessings bro!
I mean nothing, normally the codes would flash, now i turn the key on and i get zero zilch nada I had taken a pin to check the tension on the computer terminals, some were loose so i changed those terminals, chk. again and they were ok i get tension as i slide the pin in and out, that tells me the connections are good chk the key again and nothing happens, so i figured i need to get a computer but i'm concerned it might not be the problem!!
Thanks Dr. Johny Dodge all info that you have suggested i've done to the car, i've just got to chk. all th outputs on all these terminals then we'll see what happens, Thanks again Johny!!
Thanks tryingbe i'll check out all connection you have suggested and see what happens!!
Is your car Turbo I or Turbo II? Four wire TPS is usually Turbo II.
If it's Turbo II you would need a GLHS Logic Module.
There's also the posiblility it was converted to 1987 electronics.