hey guys, i've been havign this problem for a while now and i can't seem to find the problem. if you guys can help that would be great.

when i try to start my car in cold mornings, whish isn't even that cold, prob from 12 degrees to 15 degrees, it won't start. i can't hear the fuel pump starting whirring and starting up. but later on in the day when it gets warmer, it works again. first i thought my fuel pump was dying, so i changed it, and teh same problem occurs. i checked my ignition coils, and checked spark plugs which all seems to be fine. the main thing is, when it doesn't start, i can't hear the fuel pump.

if it matters, all i've done to my motor is basic bolt ons, with ngk iriway spark plugs, and i just replace the fuel pump with a oem replacement fuel pump.

Thanks for the help everyone.

Jon

 

When I start my car I listen for 2 things : fuel pump relay goes "click" and fuel pump comes on.Check your manual or search fuel pump relay.Let know what u find out.

 

What's the condition of your battery?

 

Batteries are weaker in the cold...good indication that your battery is on it's way out.

 

thanks for all the help. the battery is a optima yellow top put in about 5 months ago so i don't think that is the problem.

 

Optimas are known to fail prematurely...it's also a deep cycle battery that doesn't have as much cold cranking capability. Get it load tested.

 

thinking battery. Easy way to test is to charge the battery and try to start.

 

don't dismiss that damn battery, i had the same exact one and it died after 1 year

 

thanks for all the help everyone.

jon

 

Did ya figure it out? let us know.