Long Cranks / Camshaft? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-19-2010, 04:24 PM   #1
Jeeper
 
Join Date: Jun 2007
Location: New Haven
Posts: 64
Long Cranks / Camshaft?

As a follow-up to this thread(http://www.wranglerforum.com/f5/long...ing-60188.html) I had the cam sensor replaced and that didn't fix the long-crank problem.

Dealer says the camshaft is worn and I need a new one for $1400.
Does this make sense? I'm no expert but it seems to me that if the camshaft was bad the car would run poorly all the time and not just take a few seconds longer to start.

Any thoughts?

__________________
05 Wrangler Sport
6-Speed 4.0L
Dual Tops
ejmct is offline   Quote Quick Reply
Old 10-19-2010, 05:20 PM   #2
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,864
Tell them you'll pay it if it fixes the problems.


I highly doubt that is your problem.

Do you have a CEL or any codes?

How long are we talking? If your cam/crank is out of sync it should be throwing a code.

If no code, try the on/off sequence with key, three times, then start engine, if it starts up promptly then its a fuel pressure issue keeping it from starting quickly.

__________________
#2 Jeep http://www.wranglerforum.com/f322/99...ld-819418.html
99 Sahara, automatic.
mrcarcrazy is offline   Quote Quick Reply
Old 10-19-2010, 06:21 PM   #3
Jeeper
 
sparky's Avatar
 
Join Date: Oct 2009
Location: Phila
Posts: 1,942
Cam shafts don't wear out. (And yes it would have a problem while running not just starting.) My 98 is starting to behave the same way. It will fire right up when cranking a second time. Turning the key to run for a few seconds seems to make it easier to start on the first try. I haven't checked anything yet, but I am suspecting fuel. Either some clogging of the filter or a weak fuel pump. Acts like it needs to run for a few seconds to get fuel up to the rail.
sparky is offline   Quote Quick Reply
Old 10-19-2010, 06:22 PM   #4
Jeeper
 
sparky's Avatar
 
Join Date: Oct 2009
Location: Phila
Posts: 1,942
Just read the other thread what Jerry said about the check valve. I'm saving that part as the symptoms fit.
sparky is offline   Quote Quick Reply
Old 10-19-2010, 06:26 PM   #5
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 32,821
Images: 2
Quote:
Originally Posted by ejmct View Post
As a follow-up to this thread(http://www.wranglerforum.com/f5/long...ing-60188.html) I had the cam sensor replaced and that didn't fix the long-crank problem.

Dealer says the camshaft is worn and I need a new one for $1400.
Does this make sense? I'm no expert but it seems to me that if the camshaft was bad the car would run poorly all the time and not just take a few seconds longer to start.

Any thoughts?
Likely a defective fuel check valve with one being in the fuel pump and the other check valve being in the fuel pressure regulator. When the check valve leaks, all the fuel inside the fuel rail next to the fuel injectors that is supposed to stay there instead leaks back down into the gas tank. The slow start time is the time it takes the fuel pump to refill the fuel lines and fuel rail. The check valves are supposed to keep the fuel rail and fuel lines full for fast starts.

I'd start with the fuel pump which depending on how you buy it, may also include the fuel pressure regulator that sits on top of it. RockAuto Auto Parts has them for around $160.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 10-19-2010, 07:11 PM   #6
Jeeper
 
Join Date: Jun 2007
Location: New Haven
Posts: 64
There is no CEL on and the car runs great once started.
It takes maybe 3-4 seconds of cranking to turn over. Maybe 20% of the time it turns right over. Doesn't seem to turn over any better if I try a second time but never tried a third time.
It seems a lot more like a fuel delivery issue than a camshaft.
I asked the dealer if it was normal for a camshaft to go on this engine after 60k miles and all he said was "no, but you never know..."
If I find out its not a camshat I'm going to file a complaint against the dealer.

Also I like the new WF app for my iPhone!
__________________
05 Wrangler Sport
6-Speed 4.0L
Dual Tops
ejmct is offline   Quote Quick Reply
Old 10-19-2010, 07:15 PM   #7
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 32,821
Images: 2
Hello, hello, is this thing working? (post #5 above).
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 12-15-2010, 09:01 PM   #8
Jeeper
 
Join Date: Jun 2007
Location: New Haven
Posts: 64
Just to follow up on this thread, its been requiring long cranks for several months now and I've been living with it as once it starts its always run fine.
Yesterday the CEL went on so I took it to a local shop today.

As you guys predicted it was a bad fuel pump/check valve. They replaced it today and it now starts fine.

What annoys me is that the dealer couldn't figure this out. They charged me $300 to replace a cam sensor that fixed nothing. Then they told me it was the cam shaft for $1400, which didn't make sense to me so I never had it done thank goodness. So the dealer would have charged me a total of $1700 and STILL not have fixed the actual problem!

The guy at the local garage knew immediately it was the check valve as you predicted. I am done with the dealer.

Thanks for your help.
__________________
05 Wrangler Sport
6-Speed 4.0L
Dual Tops
ejmct is offline   Quote Quick Reply
Old 02-03-2011, 09:34 PM   #9
Newb
 
Join Date: Feb 2011
Location: Georgia
Posts: 9
I have a 2002 wrangler sport and i was wondering if you have the same problem that I did. Most of the time you have to keep the ignition turned for a few extra seconds for the jeep to crank. The jeep always starts but it is delayed. It will start right up the first start of the day but each start after that though out the day it is delayed. Wondering if it sounds like your problem before i spend the money to fix the same problem that you had. Hoping to work on the problem this weekend but wanted to check out your problem first.
Thanks,
gadawg is offline   Quote Quick Reply
Old 02-04-2011, 10:57 AM   #10
Jeeper
 
Join Date: Jun 2007
Location: New Haven
Posts: 64
Actually I have an update.
The fuel pump didn't solve the problem.
Turns out it was a bad fuel injector after all. Now it runs runs.
Its a $200 job that cost be a fortune fixing things that weren't the problem.
Apparently bad injectors are rare but worth checking out.
__________________
05 Wrangler Sport
6-Speed 4.0L
Dual Tops
ejmct is offline   Quote Quick Reply
Old 02-04-2011, 11:15 AM   #11
Newb
 
Join Date: Feb 2011
Location: Georgia
Posts: 9
I know that i have a vaccum leak becuase i am having the problem with the hvac blower only coming out of the defroster. Was also wondering if anyone has ever heard of the vaccum loss causing a problem like this with the long start?

Also is there a way to check the fuel injector before going and replacing it?

gadawg is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Long Arm Suspension Lift Question Pierce07 TJ Tech Forum 20 04-06-2009 06:22 PM
Long arm kit exhaust bubthechub TJ General Discussion Forum 5 02-08-2009 11:56 AM
1999 Jeep Wrangler cranks and no start troymach1one TJ Tech Forum 1 07-10-2006 11:02 AM
long arm lift kit mrbigjeep TJ General Discussion Forum 11 05-04-2006 01:20 AM
long arm lift (again) mrbigjeep TJ General Discussion Forum 1 05-03-2006 12:24 AM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:27 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC