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

electric water pump - backup plan?

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Old Apr 30, 2020 | 12:53 PM
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Default electric water pump - backup plan?

My electric water pump stopped working briefly yesterday. When I noticed, I grabbed the connector to check for power but the pump came back on. It's been on for 2 days operating normally, but now I'm skiddish. Anyone have any recommendations to ensure it's on when driving? I'm thinking of wiring an LED in series just to see a closed circuit on the dash.

Bonus photo: I tied up some loose ends while sheltering in place. Removed the hood since I was in the front end for a few weeks. This was my method for replacing and adjustment. 2 tie straps and a pool noodle.


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Old Apr 30, 2020 | 02:20 PM
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Jay, you may want to read this..... https://www.corvetteforum.com/forums...-leds-diy.html

But FWIW I have seen more problems with the relay, vs the actual pump....
I like the factory fan relay for a pump relay for a few reasons.
1. The fans pull way more amps then the pump, so its heavy enough.....
2. Factory relays seem to be very reliable
3. If it failed, you could swap it with one of the fan relays to make it home, at least that is my plans are with my 93...

BTW. what pump do you have? I always heard the meziere is the most reliable.
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Old Apr 30, 2020 | 09:05 PM
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Thanks for the link that's great. I actually have 2 meziere pumps. The previous owner had one installed and a backup (thanks John!)

I thinj you're right about the relay, it looks like there wiring could be better. I'll probably start there
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Old May 1, 2020 | 08:28 AM
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Jay, Just a suggestion, but here is what I used on mine for a relay kit, which is available from ecklers.
1. cooling fan relay connector kit. 25-105172-1 https://www.ecklerscorvette.com/corv...1988-1994.html
2. cooling fan relay. 25-101895-1 https://www.ecklerscorvette.com/corv...1988-1994.html



Back when I got mine, it came as a upgrade kit (all together) for the early c4 fans.....
Hope this helps
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