Hi Scotty,
I have a 2003 Dodge Neon 2.0l standard. Anytime the outside temps get around 90 degrees and has been driven for 30 to 60 minutes it begins to act like it isn't getting fuel. It does not trip any codes. It progressively gets worse the longer you drive it until it finally just won't run. It never over heats and never has the problem with outside temps below 90. After sitting a few minutes it will run enough to get another couple miles. I have tried replacing every sensor etc and the thought maybe the computer was bad. Replaced the computer with no effect. Now am thinking it is something in the emission controls and canisters. At around 250k miles now and engine was fully rebuilt 20k ago or so and fuel pump replace a couple years ago with dephi. Any ideas???
D Geary
Well my advice is find a guy like me with this fancy scan tool drive it and when it acts up look at the data to see what's going on. Could be many things could be. The fuel pump is losing power when it gets too hot. Could be an injector. Couldn't handle the heat. Lots of things can do that. More often than not. It has to do with a fuel pump though
@scottykilmer thanks Scotty...I did replace all the electric emmision stuff and the fuel pump...nothing changed..no running data is shown out of place...craziest thing..next trying to cha.ge put the intake incase it is creating a severe vacuum leak at higher temps..hate those plastic glued things..it had a front collisin bit I never changed the intake as I didn't get broke but the fans did get pushed against it..when I rebuilt the engine I did do a cleaning on the injectors but I ha e another set I can pull apart clean and try out...