Intermittent warm starting problems

[ChrisHug]

Hello all! This is my first post on this problem. I'm having a problem with my car [2000 Dodge Intrepid R/T 3.5L] that is absolutely driving me insane I'm hoping some knowledgeable folks here can give me a hand with this. Anyhow, here goes.

Sometimes, when the engine is at normal operating temperature, it won't start up when I turn it off. For example, let's say on my way home I stop off in a supermarket to pick up some stuff. I'll come back out 20 minutes or so later, only to find out my car isn't starting. I'll turn the key and the engine will crank, shake and then immediately die on me [I'm under the impression the engine isn't even starting at this point because tapping the gas does nothing]. Again, this is a problem that is only happening sometimes. I can do the same routine tomorrow and it'll start up flawlessly. As a matter of fact, this just happened to me today. When I finally got it up and running, I drove home. When I got home, I turned it off and let it sit for a minute, then started it again with no problem.

The thing that is driving me crazy with the issue is this.

1) This is only an intermittent problem. The problem doesn't seem to be occurring more frequently, but when it does happen, the engine is harder to start. For example, the first time this happened to me, I got it started after one or two tries. After my latest episode, it took me 11 tries to get it running!

2) After the engine does finally start, the engine will run really rough and shake a lot until I tap the gas a few times (which is leading me to believe this is some sort of fuel related problem [sometimes, the engine will start on one try, but will run rough until I tap the gas a few times]).

3) When the car is cold, it starts up flawlessly every time without fail.

4) The car runs mint! No hesitation or otherwise stalling, etc.

What I've done so far to try to remedy the problem:

1) Changed spark plugs

2) Fuel line cleaning/flush

I was wondering if anyone here has had any sort of experience with an issue like this, or if anyone knows what could possible be causing this? Also, is there like a general problem forum I can post this in instead of just the dodge forum (not trying to break rules here with my first post :P)? Thanks for taking the time to read this and I hope to hear some answers really soon!

P.S. I hope this is the right forum, I apologize in advance if it is not.

[ChrisHug]

~Bump~

No one has a clue? Ever since the above mentioned maintenance, the problem has only happened twice now, which is a lot less infrequent. However, the car is still a pain in the behind to start when the problem does occur.

Also, I changed the Fuel Pump Relay.

I'm thinking I might have a clog in the fuel pump?

[oldblu65]

PM sent !

[ChrisHug]

Originally Posted by oldblu65

PM sent !

Thanks! It would really suck to have to get rid of this car over something so stupid

[grider]

on some of the jeep in line 6 4.0 the injectors heat soak after a few minutes the fix is to insulate the injectors with harness shield (the plastic around engine harness) use the cheap black stuff it works the crome kind makes it worse good luck