Update: 94 sBlazer cold start issue
Group: alt.autos.4x4.chevy-trucks Date: Tue, Oct 28, 2003, 11:06am
(CST-2) From: email@example.com (vwtopdown)
I posted last week or so about a starting problem that i thought was a
starter or possibly battery issue but does not seem the case. battery
checked at autozone
Recap: If it's above say 60 degrees the car will start fine after
sitting all night. If it's cooler it seems to have an extended crank
time (2x @ 6seconds) before the engine finally starts. And then from
there on in it starts right off the bat the rest of the day.
Definately seems temperature plays a factor as saturday it was about 65
here on sat. and the truck had been sitting for a good 12 hours and it
started up right away. however the next day 55 degrees and it took a few
extra tries before starting.
1. new coil,plugs,wire,rotor,cap, air filter,pcv
2. new fuel pump relay
I hear the fuel pump prime when turning the key.Once it starts it runs
great no stumbling or bad idle or anything.
If the oil pump sender/switch is being flaky (i.e. when it's cold it's
crapping out then after a couple seconds it kicks in.) will that prevent
the car from starting?
I know the fuel pump relay pressurizes the system but if it doesn't see
a signal from the oil pressure switch, will that keep the car from
If it was losing fuel pressure wouldn't it start harder reguardless of
Stumped and looking for suggestions.
=========I think you would be well advised to install
the oil presure switch AND a temperature
sensor .....if it's not a money thing.
and yes.....the symptom would be there all
the time if regardless of temp if the fuel
pressure was dropping consistantly.
Did you ever check the fuel pressure regulator?