NO CHECK ENGINE LIGHT when ignition ON
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 54
Likes: 0
From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
NO CHECK ENGINE LIGHT when ignition ON
Yesterday my car died on the go and didn't start afterwards. When I turn the key the check engine light does not light up. This has happened a few times before but after a few tries it would light. This time it stays off.
Any suggestions? As far as I know if check engine light isn't on when key is turned than there is something with the wiring that goes to the computer.
Any suggestions? As far as I know if check engine light isn't on when key is turned than there is something with the wiring that goes to the computer.
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: NO CHECK ENGINE LIGHT when ignition ON
Has the light been coming on with the key on, engine off before the newest problem? The bulb may be burned out. Otherwise, check the in line fuse in the holder next to the battery. If its blown, you need to figure out why it's blowing. It protects the power supply to the ECM and the fuel pump.
Also check the ECM fuse in the under dash fuse panel.
Also check the ECM fuse in the under dash fuse panel.
Last edited by ASE doc; Jun 26, 2012 at 06:27 PM.
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 54
Likes: 0
From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Re: NO CHECK ENGINE LIGHT when ignition ON
it has always been coming on when the key was on and engine off. It has done this kind of thing several times but than it would "repair itself" and the light would come on. This time it didn't happen. The fuses are all ok that are under the dash. But I don't know about that other one that you mentioned. Where is that exactly?
thanks for the reply.
thanks for the reply.
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: NO CHECK ENGINE LIGHT when ignition ON
It should be close to the battery, on the inner fender well. It's in a black housing that almost looks like a small relay. It's attached by a screw to the fender well.
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 54
Likes: 0
From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Re: NO CHECK ENGINE LIGHT when ignition ON
It healed itself again :-| started perfectly!
I'll look at that as well...thanks!
I'll look at that as well...thanks!
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: NO CHECK ENGINE LIGHT when ignition ON
I would definitely be checking for a poor connection, either at the ECM/Fuel Pump fuse by the battery, or maybe at the ECM connector itself. I would be very nervous about driving that car too far from home.
Re: NO CHECK ENGINE LIGHT when ignition ON
Has the light been coming on with the key on, engine off before the newest problem? The bulb may be burned out. Otherwise, check the in line fuse in the holder next to the battery. If its blown, you need to figure out why it's blowing. It protects the power supply to the ECM and the fuel pump.
Also check the ECM fuse in the under dash fuse panel.
Also check the ECM fuse in the under dash fuse panel.
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Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: NO CHECK ENGINE LIGHT when ignition ON
Did you solve the source of he problem? Fuel pump drawing to much amps?
Re: NO CHECK ENGINE LIGHT when ignition ON
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: NO CHECK ENGINE LIGHT when ignition ON
Re: NO CHECK ENGINE LIGHT when ignition ON
Re: NO CHECK ENGINE LIGHT when ignition ON
My corolla professional is just cranking but not starting. No check engine light, no spark, and no fuel received on the engine and all the fuses are fine, and replaced all of them. The car cant connect on the diagnostic machine system for the machenic to identify the problem. Car just standing for almost two weeks now. What could be a problem?
Last edited by Lazarus; Jul 13, 2024 at 02:05 AM.
Joined: Sep 2005
Posts: 27,893
Likes: 2,436
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: NO CHECK ENGINE LIGHT when ignition ON
What could be a problem?
Visit a Toyota forum.
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