Main PFI relay location

1993 HONDA DEL SOL
11,000 MILES • 4 CYL • FWD • MANUAL
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ALEXANDER KOVER
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Several years ago I became aware of a common issue with Honda starter relays in hot weather. The engine turns over just fine but it fails to fire. I believe that I developed this problem when I moved to Philadelphia from Buffalo. Where is this relay under the dash, so that I can spray it with a CO2 fire extinguisher to cool it down the next time it happens?
May 27, 2010 at 11:37 AM
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KHLOW2008
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Hi Alexander Kover,

What you are referring to is no the starter relay. It is the Main PFI relay

It should be the PGM-FI main relay that you are referring to. The problem with the relay is that some soldered circuits are cracked and intermittently fails due to the weather.

Here is a guide to help test it with the location below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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May 27, 2010 at 3:27 PM