So this issue doesn't happen too often, but sometimes when I start the car the engine starts to turn over and then all of a sudden it'll act like its barely able to turn over. Two things either happen it sounds like its going to die but then will recover and start up. Other times it'll just die and I have to start it up again.

I want to say that it occurs when I drive it for awhile (roughly more than 30minutes), and then starting it up again shortly after. Also another scenario is starting it up cold driving a short distance roughly 1.5miles, and after a couple of hours starting it back up.

Additional info, its an 04 w/ 143k and I do believe the spark plugs have been changed when the previous owner had it. Any help will be greatly appreciated thanks!

 

Does it sound like it's cranking at a normal speed, then all of a sudden almost violently stops or slows down, and resumes picking up speed again before starting? Is it sometimes considerably worse than others?

 

Yep, pretty good description of the issue. When its cold out it starts right up with no issues at all, I'm assuming that's because of the misfire.

 

It sounds like it might be vapor lock. The older J's appear to be more prone to this.

I'm not sure of any easy way to surely fix it. It could be low fuel pressure, most likely due to an old FPR. If you reduce the heat that gets to the fuel rail, it might help. You could try removing the engine plastics, or the hood insulator. It's possible you just have low fuel pressure, but in my case with my 02 Accord V6, the fuel pressure was in spec and it still did it. The 'resolution' from Honda was to get a higher pressure fuel regulator and new ECU, which is quite expensive and I didn't bother with since it really didn't pose a serious problem. The car still started, just not so great when it was hot and sat a bit. Presumably the fuel used has some effect on this as well, but that's not so easy to resolve.

 

Crankshaft position sensor perhaps

 

Curious how you came to this conclusion, is this something you dealt with?

 

Found something on the low fuel pressure, read about the electronic fuel pump that needs to pressurize, so next time I start the car after running it for awhile I'm going to leave it in the "on" position for about 10secs then start it up. So it could potentially be a number of things, fuel pump, fuel line, or rail.

/forums/f72/problems-starting-my-tl-54954/


Has anyone else had this problem? Solution?

 

symptoms you described, makes me think the engine is out of timing. You mention that it seems worse when warm, but starts fine when cold. Had similar problem with Hyundai, but not sure if problem is common with Honda.


Best of luck and let us know the resolution


cheers

 

might want to have it scanned for pending or current faults when condition occurs.

 

Just to clarify, your problem goes away after a few seconds of running, correct?

 

Not exactly sure what you mean, but it only occurs while the engine is trying to start. It'll sound like its cranking up fine but then all of a sudden it'll struggle to start up. Sometimes it'll almost shut off then instantly start up. Again, this only ocurs after the cars been running for awhile and I try to start it up a couple hours later.

 

I don't see how that can be caused by the crank position sensor.

If the problem persists I would check the fuel pressure.

 

Low fuel pressure or even the lack of fuel, won't cause the engine to change RPM's when cranking.

First, have the battery load tested, make certain cables/posts are clean and tight and if it still persists check voltage at the starter, then starter itself.

 

Crankshaft position sensor tells ecm where cyl#1 is and then starts ignition cycle and fuel injector pulses from there. If ecm does not where #1 is then all timing could be messed up causing engine starter to kick back or struggle, then seem fine again.


Of course all this is speculation based on symptoms described. I could be wrong, but I got the understanding that the symptom only occurred during starter engagement.


Please keep us informed


cheers

 

Hopefully this weekend I'll have time to look into it while I replace a few parts on my car. I'm not sure if this is related at all, but sometimes while my foot is on the brake the rpms will shoot up VERY slightly causing the car to nudge forward slightly, any clue? I want to say it happens when I"m driving the car after a cold start.