So when the car is cold, it takes a couple tries to start, but it runs and idles fine. It starts ok if the engine is warmed up (ie, if I turn the car off for a few minutes and restart it)

I looked at some old threads, but most people seem to think this is a security/key issue and I dont think thats it. The fuel filter is also new. Im thinking maybe the relays.

Any thoughts?
Thanks!

 

if the key is the problem the security light will stay on. could be fuel check the pressure when it doesn't start, if there is pressure, than it's most likely electrical

 

Well, it starts like crap on hills, but it seems to not be too much better flat either. A few days before this the dealer replaced the water pump, i didnt think it could be related ... but then again, these are the same guys that asked me if my SS was a 6 or 8 cyl. :blah:

 

Unless they washed an OPTI with coolant from a pump... Check your fuel pressure. If you turn ignition On, then wait a lil, then Off, then again On and so on couple of times, then try to start - will it helps? That will be a good pointer to fuel pump/filter/fp regulator.

 

it's your fuel pump probably. I had the same problem.
walbro 255lph pump is worth it vs. OEM equipment
fix it soon so you can go back to happily spanking stangs

 

I had the same problem with my 98 firebird it was the ignition relay.
next time it does this switch the relay with the fan relay same part# and see if it helps then you know if that is the problem.

 

For anyone looking up this thread later, it ended up being the ignition relay