car cranks but will not start
Thread Starter
Intermediate
Joined: Sep 2011
Posts: 34
Likes: 0
From: Milford CT
car cranks but will not start
I had this problem before. I replaced fuel pump and car ran fine.I had the car out the other day and it was running OK I pulled into the drive way and now it will not run. The test procedure says something about the oil pressure switch. The diagram says it is below the distributed. Can it be seen from above, or do I have to look under. Does any one know what it looks like.
Any help would be appreciated.
Thanks
Rich
Any help would be appreciated.
Thanks
Rich
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
When you turn the key without cranking do you hear the pump run for two seconds? I believe yours has two oil pressure senders just behind the engine. And you can see them from the top driver side.
Last edited by antfarmer2; Sep 8, 2016 at 09:53 PM.
Thread Starter
Intermediate
Joined: Sep 2011
Posts: 34
Likes: 0
From: Milford CT
car cranks but does not run
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
Sorry fuel pump relay.
Might want to look at the connections to the fuel pump since you were just there. And check your fuse.
Last edited by antfarmer2; Sep 8, 2016 at 10:43 PM.
Race Director
Joined: Apr 2002
Posts: 10,036
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From: Anaheim CA
There is a plastic latch and locking collar that holds the connector in place. You must unlatch it to remove the connector.
Some cars have a combination oil pressure sender and oil pressure switch in one unit. It looks like this:
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Do you have the FSM for your car?
Last edited by WVZR-1; Sep 22, 2016 at 05:01 AM.
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(my 2-cents, FWIW) -- how did you check fuel pressure, and what is the fuel pressure? if the fuel pressure is truly "zero PSI," gauge, at the fuel rail, start there and work back. one question, and not trying to be a wise-*** or anything, but since you mentioned the fuel filter, I have to ask - are you 110% sure that fuel filter is properly oriented? I've never ran across a scenario where the filter was installed bass-ackwards, but, then again, there's murphy's law. not sure what would happen, but they do put a directional arrow on those things for a reason. maybe the guts of the filter would collapse or something - I don't know - ???
if you cannot read pressure or hear the fuel pump run - key "on" for two seconds, look into the fuel pump relay (assuming the FP fuse is good). if the relay is bad, or has a grounding issue, cranking the engine until oil pressure gets above 4PSI should by-pass the relay and allow the engine to start. chances of both a fuel pump/relay issue (or related), and a oil pressure switch issue at the same time are pretty slim.
start with a proper fuel pressure diagnostic test per the FSM. everything else here is second guessing. the basic "key on - 42 psi - 2 second" thing says a lot.
right now, and I'M second guessing, but it sounds like you have zero fuel pressure - now you have to figure out why. good luck - keep us informed.
edit: as for my filter comments, I need to ask - did you have this issue before or after you replaced the fuel filter? if after, most likely there is no issue - I was just looking down all avenues.
if you cannot read pressure or hear the fuel pump run - key "on" for two seconds, look into the fuel pump relay (assuming the FP fuse is good). if the relay is bad, or has a grounding issue, cranking the engine until oil pressure gets above 4PSI should by-pass the relay and allow the engine to start. chances of both a fuel pump/relay issue (or related), and a oil pressure switch issue at the same time are pretty slim.
start with a proper fuel pressure diagnostic test per the FSM. everything else here is second guessing. the basic "key on - 42 psi - 2 second" thing says a lot.
right now, and I'M second guessing, but it sounds like you have zero fuel pressure - now you have to figure out why. good luck - keep us informed.
edit: as for my filter comments, I need to ask - did you have this issue before or after you replaced the fuel filter? if after, most likely there is no issue - I was just looking down all avenues.
Last edited by Joe C; Sep 22, 2016 at 06:32 AM.