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-   -   1994 YJ 4.0 Long cranking (http://www.wranglerforum.com/f218/1994-yj-4-0-long-cranking-265589.html)

Jeepers79 08-26-2013 09:28 PM

1994 YJ 4.0 Long cranking
 
Literally that. Seems like I have extended crank times before the motor starts.

New Plugs, wires, cap, rotor, fuel pump, Fuel filter...

I can turn the jeep off.. and immediately crank it again, and still get long crank times, so i don't feel its fuel related.

Thoughts?

1994 4.0 YJ
Manual Trans 198k miles

panzer-yj 08-26-2013 09:56 PM

Quote:

Originally Posted by Jeepers79 (Post 4124058)
Literally that. Seems like I have extended crank times before the motor starts.

New Plugs, wires, cap, rotor, fuel pump, Fuel filter...

I can turn the jeep off.. and immediately crank it again, and still get long crank times, so i don't feel its fuel related.

Thoughts?

1994 4.0 YJ
Manual Trans 198k miles

92 4.0, same issue here. Some say it's normal others say it should start immediately.

Jeepers79 08-26-2013 10:00 PM

I feel like sometimes its longer than others too.

panzer-yj 08-26-2013 10:22 PM

Exactly.

87 Florida YJ 08-26-2013 10:34 PM

I admit I am clueless as to why both if you unfortunately have this problem but I refuse to believe its 'normal'. Between the three of us we have a 94,92 and an 87 that starts in an instant. Immediately, to me that flys in the face of logic because not even Chrysler would design newer models to perform worse than previous models ***. Something has to be the culprit here.

I will bet you both lunch there is one Forum member that knows exactly why you have this condition (actually i think there are at least four) and will offer solid recommendations how to correct it. Sorry Im not your man but Im confident your help is on the way. I've never seen a question on ANY thread posted here go unanswered. Not one.

***. I personally believe Chrysler killed the Jeep but that's another thread.

87 Florida YJ 08-27-2013 07:03 AM

Where are the JeepMasters when I need them? Come on boys you're making me look bad:banghead:

harleydragon 08-27-2013 07:15 AM

could be fuel pressure regulator..normally as they start going bad the engine will only be slow to crank after sitting for a while and then gradually that sitting time will get shorter until it does it all the time..But,as in anything what is normal is not always the case

87 Florida YJ 08-27-2013 07:42 AM

OK. I'm an admitted Dragon groupie but I knew he would help. If it was my jeep and the long crank was annoying I would invest the 50 bucks and replace the regulator based solely on his input. No guarantees but IMO he knows everything worth knowing. Definitely one of the four I was hoping would jump in.

panzer-yj 09-08-2013 01:33 PM

Fuel pressure regulator was first thing I replaced. Still long a** crank times. Beginning to wonder if the ECU has been manipulated and stuck in a closed loop. Seems to be running awful rich.

Francotirador 09-08-2013 11:53 PM

What if you try and jump the everything! Start the jeep from starter.......ie. jump the cumputer.

stretch05 09-10-2013 12:55 AM

I'm going through some stuff right now. My issue started with long cranks. Only a few before it didn't start. The starter was bad. An easy thing to take off and have a parts store check. That wasn't the only problem. Mine appears to be the Ecm. If your check engine light doesn't come on when your jeep starts it is related to the Ecm. Bad connection or unit, up to you to diagnose, but if you can't start some day, check for that.

wasomma 09-10-2013 12:00 PM

Is it cold or parked at an angle when you try and start it?


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