l98 No Start
Thread Starter
5th Gear
Joined: Apr 2011
Posts: 5
Likes: 0
l98 No Start
I have a 89 l98, i was driving home a couple nights ago and the engine just died. I found that have no spark. I have replaced the ignition coil and module and still nothing. The BATT wire does have 12 volts to it when key on. Any will help thanks.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Try opening the EST connector (single wire connector between the windshield wiper motor and power brake booster -- it could be buried under the windshield wiper motor). That will eliminate the computer.
Take the distributor cap off but connect the three wire connector and the BATT connector to the cap and make sure you have 12 volts on the "+" terminal (red wire) of the ignition module.
It's possible your pickup coil is bad (under rotor inside distributor). Measure it with an ohmmeter across the P and N terminals of the ignition module. It should measure about 800 ohms (that would be 0.800 on the 2K range). If that's bad you have to take the distributor shaft out of the distributor to replace it.
Take the distributor cap off but connect the three wire connector and the BATT connector to the cap and make sure you have 12 volts on the "+" terminal (red wire) of the ignition module.
It's possible your pickup coil is bad (under rotor inside distributor). Measure it with an ohmmeter across the P and N terminals of the ignition module. It should measure about 800 ohms (that would be 0.800 on the 2K range). If that's bad you have to take the distributor shaft out of the distributor to replace it.
Thread Starter
5th Gear
Joined: Apr 2011
Posts: 5
Likes: 0
I disconnect the EST connector and still noting.
I also checked for power a the "+" terminal on the ICM and it has battery voltage.
The pick up tested good at .779k ohms.
So does this mean when I disconnected the EST connector that the ECM is bad?
I also checked for power a the "+" terminal on the ICM and it has battery voltage.
The pick up tested good at .779k ohms.
So does this mean when I disconnected the EST connector that the ECM is bad?
Team Owner
Joined: Jan 2003
Posts: 20,306
Likes: 242
From: Summerland B.C. Canada
The one time mine died and had no spark, was due to the tach wire getting pinched under cap and eventually cut through and grounded the circuit.
Follow the flow chart, should help.
http://members.shaw.ca/corvette86/Ig...System-EST.pdf
Follow the flow chart, should help.
http://members.shaw.ca/corvette86/Ig...System-EST.pdf
