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D_E_Bishop's avatar
D_E_Bishop
Explorer
Aug 22, 2015

Need help with the In-Tank pump, FOUND SCHEMATIC OL

I have written about the starve out problems I've been having with the 1989 Chevy naturedly aspirated 454 in our rig. I had it to a shop to repair what needed repairing so I would pass smog here in C...
MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
Aug 22, 2015
Power goes through the wire that will make a test light glow with the igntion switch turned on. The test light will play possum when the Fuel Pump fuse is pulled. The pump most likely has a relay so underdash work may not be fruitful.

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