C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1989 l98

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Old May 23, 2011 | 04:43 PM
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1989erniew
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WHERE TO CHECK COOLING FAN MY 1989 ....IS NOT COMING ON AUX WILL COME BUT NOT MAIN??FAN WORKS-WHEN BENCH TESTED..
HEADLIGHTS ONLY FLIP HALFWAY OVER ANY SUGGESTIONS
HORN DOES NOT BLOW ANY SUGGESTIONS
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Old May 23, 2011 | 05:01 PM
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Originally Posted by 1989erniew
WHERE TO CHECK COOLING FAN MY 1989 ....IS NOT COMING ON AUX WILL COME BUT NOT MAIN??FAN WORKS-WHEN BENCH TESTED..
HEADLIGHTS ONLY FLIP HALFWAY OVER ANY SUGGESTIONS
HORN DOES NOT BLOW ANY SUGGESTIONS
Do a search to find out if/where a fan relay sits. The main ECM provides the trigger to turn it on/off.

Do a search of the C4Tech sticky and find the link to the headlight repair thread. You may need new (nylon) gears.

Look behind the information center display in the A/C bezel. See what you're getting to the horn relay.
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Old May 23, 2011 | 05:59 PM
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Thanks for your reply....
Have replaced fan relay... Ecm????
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Old May 23, 2011 | 06:24 PM
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Originally Posted by 1989erniew
WHERE TO CHECK COOLING FAN MY 1989 ....IS NOT COMING ON AUX WILL COME BUT NOT MAIN??FAN WORKS-WHEN BENCH TESTED..
HEADLIGHTS ONLY FLIP HALFWAY OVER ANY SUGGESTIONS
HORN DOES NOT BLOW ANY SUGGESTIONS
Hey, 88 vette here...
Main Fan - Did this three days ago...one the driver's side wheel well, between the wheel and the battery, there are two relays screwed to the wall. Mine was the one closest to the wheel. $12 and it fixed mine right up.

As for the headlights, I fixed that last weekend. Buy bushings and gears on Ebay for like $17 per side, $39 for both sets including s/h.

Search for "88-96 Corvette Headlight Motor Gear w/Bushings" or try this link. They shipped quick too...

http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT

No idea on the horn....
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Old May 23, 2011 | 06:42 PM
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Originally Posted by 1989erniew
Thanks for your reply....
Have replaced fan relay... Ecm????
Which relay? When I first changed mine out, guessing, I changed the one on the fan shroud - wrong one. Then figured out it was back by the master cylinder and had to guess between the two there. The other is AC High Pressure switch.
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Old May 23, 2011 | 11:16 PM
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Thanks i will try that relay.... Hope this is it better than ecm.
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