Sound Like An Optispark Issue?
Melting Slicks
Joined: Feb 2010
Posts: 2,077
Likes: 72
From: Reno Nv
That could easily be the fuse. It's located in front of the drivers side wheel well. It's in a 1 in. by 1/2 in. black connector, just above the electric air pump. It may be attached to the side marker light with a clip. When you pull the connector out of the little box, the fuse will come out with it.
Heel & Toe
Joined: Feb 2010
Posts: 23
Likes: 0
From: Hobbs NM
Before I changed the opti I would change the coil and ICM. Either way can't hurt to change them and it's a cheap and easy job. Changing the coil takes about 30 mins if you run into trouble and is only about 30 dollars, ICM takes about 5 mins to change but runs about 100 dollars. The opti however if you have it done is about a 700 to 1000 dollar job and a ton of work if you do it yourself.
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
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[QUOTE=Bill32;1573229321]That could easily be the fuse. It's located in front of the drivers side wheel well. It's in a 1 in. by 1/2 in. black connector, just above the electric air pump. It may be attached to the side marker light with a clip. When you pull the connector out of the little box, the fuse will come out with it.
True. Both bulbs could be burned out, too.
True. Both bulbs could be burned out, too.
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
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Melting Slicks
Joined: Feb 2010
Posts: 2,077
Likes: 72
From: Reno Nv
Also AC Delco, if you have a store near by.
1992 p/n is D1971A
GM 10483131
Probably the same for a 94 but, check.
Before you replace it, you should run thru the FSM's checks. Some (a few) parts stores can check an ICM.
1992 p/n is D1971A
GM 10483131
Probably the same for a 94 but, check.
Before you replace it, you should run thru the FSM's checks. Some (a few) parts stores can check an ICM.
Last edited by Bill32; Feb 26, 2010 at 05:16 PM.
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
Alright thanks, I have a Chilton manual I'll run through
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
UPDATE:
This is definitely not an ignition problem. Here is what I've noticed:
These problems (rough idle, hesitates more as load increases) only occur when oil pressure is high and the coolant temp is below 185. My cousin seems to think it's the MAF sensor. Any thoughts?
This is definitely not an ignition problem. Here is what I've noticed:
These problems (rough idle, hesitates more as load increases) only occur when oil pressure is high and the coolant temp is below 185. My cousin seems to think it's the MAF sensor. Any thoughts?
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Safety Car
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
Unplug the wire at the maf and it should run just fine but it would not accelerate.I had a hair line crack on mine and it was the problem you discribed.I also had a similar problem and I have replaced the coil 3 times.YOu have a 94 the ecm doesn't go bad ,it is so rare it is like pulling hens teeth.Your computer is the first year of a learn computer.The map sensor will also cause a problem like this and it is on the passerner side under the plastic piece at the front of the intake.Also check the 3 way vaccum thing near the map ,that always breaks and causes a vaccum leak.
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
Unplug the wire at the maf and it should run just fine but it would not accelerate.I had a hair line crack on mine and it was the problem you discribed.I also had a similar problem and I have replaced the coil 3 times.YOu have a 94 the ecm doesn't go bad ,it is so rare it is like pulling hens teeth.Your computer is the first year of a learn computer.The map sensor will also cause a problem like this and it is on the passerner side under the plastic piece at the front of the intake.Also check the 3 way vaccum thing near the map ,that always breaks and causes a vaccum leak.
Safety Car
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
First pull off the plastic engine cover on the pass side and see if the vaccum black piece is leaking air or use carb spray and the rpm's should go up.When it is dark out side look at the coil and see when the engine is running see if you see a light blue spark around the coil metal piece that is around the coil.
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
First pull off the plastic engine cover on the pass side and see if the vaccum black piece is leaking air or use carb spray and the rpm's should go up.When it is dark out side look at the coil and see when the engine is running see if you see a light blue spark around the coil metal piece that is around the coil.
