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Diagnosing intermittent no-start

Hi Will,

What engine in your car? B230FT ? LH2.2 or LH2.4 ?
Did you test your AMM? If not test it. See FAQ
Do you get a strong pulse of gas from the fuel rail valve after trying to start?

Give an email address and I'll send a troubleshoot manual for "no start".

I do like Phil's post about servicing connectors, however I would not dissemble
the harness bullet connectors at the firewall or you could wind up with a major
repair job. LEAVE THEM ALONE! Focus on the AMM, CPS, Ignition, RSR, connectors.
Use Penetrox-A on those connectors.

You could jump the RSR to test (see FAQ)
Better to retire your old Main fuel relay and RSR with new.
Don't trust junk yard pulls for those two critical relays, use only
for emergency spares.

The sockets can fail.
The main fuel relay socket is just female 0.250" spade lugs and they get loose
after multiple extractions and insertions.
Make a test gauge using a 1/4" male spade lug crimped on a hunk of stiff solid copper, and make sure the pins are not loose.
You can put some Penetrox-A in each female pin for better long term reliability.

The RSR is a bullet connector and the molded rubber that holds the female pins can disintegrate. If you aren't aware you can swap out the RSR and not make a solid connection if the pins are loose in the connector housing.

You could measure current flow for fuse 1 and 11 and get an idea of fuel circuitry health.
Here's what I get in the 1993 B230FT LH 2.4
Fuse 1 10.5 Amps Both pumps +
Fuse 11 3.5 Amps in-tank pump only

Good luck, Bill






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