Starts, but dies without fuel - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-09-2013, 02:20 PM   #1
Jeeper
 
Join Date: Jun 2010
Posts: 24
Starts, but dies without fuel

I just replaced my right headlamp. Other than that, no problems before today.

When I turn the key, the engine will turn over but won't start. Battery meter shows 9 V. It will start if I give it gas while turning the key, and will remaning running as long as I leave my foot on the gas, but dies as soon as I take it off. At least 1/4 tank left on the gauge.

I ran it in neutral for about 2 minutes with my foot on the gas, thinking the battery needed some juice, but no dice.

Any suggestions? This just happened, so I'm going to go do so Googling and see what I can find.

GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 02:22 PM   #2
Jeeper
 
Dextreme's Avatar
 
Join Date: Oct 2011
Location: Oregon City, OR
Posts: 3,516
Images: 1
When was the last time you cleaned your Throttle body and IAC sensor?

__________________
'99 Chilli Pepper TJ Wrangler "Mistress"
33x12.5 DuraTracs
Zone 4.25"
Dextreme is offline   Quote Quick Reply
Old 01-09-2013, 02:26 PM   #3
Jeeper
 
Join Date: Jun 2010
Posts: 24
Quote:
Originally Posted by Dextreme View Post
When was the last time you cleaned your Throttle body and IAC sensor?
I never have. And I've had the jeep almost 3 years now.
GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 02:37 PM   #4
Jeeper
 
Join Date: Jun 2010
Posts: 24
Here's a few posts with similar symptoms. Going to try some trouble shooting now:

http://www.wranglerforum.com/f5/99-4...in-195646.html
http://www.wranglerforum.com/f5/99-t...ies-57116.html
GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 03:02 PM   #5
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,452
Images: 2
The engine won't run or idle if the battery is too dead. Does it crank normally when you try to start it or does it crank slow or do you need to jump start it?
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 01-09-2013, 03:20 PM   #6
Jeeper
 
Join Date: Jun 2010
Posts: 24
Quote:
Originally Posted by Jerry Bransford View Post
The engine won't run or idle if the battery is too dead. Does it crank normally when you try to start it or does it crank slow or do you need to jump start it?
It cranks slow (much like a dead battery). It will only start if my foot is on the gas.
GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 03:48 PM   #7
Jeeper
 
Join Date: Jun 2010
Posts: 24
Just went out and ran it for about 5 minutes at 2k RPM. As soon as I took my foot of the gas, it died. Battery meter was at 14V while running, dropped to 12V afterwards.

I have a grey-headed key, and the Sentry Security System light does not blink. I don't notice any difference from prior behavior with that light (that doesn't mean that I'm not just blind).

Next, I tried to get some error codes, but I don't think there were any. The odometer went through each digit (all 0's to all 9's), then displayed the mileage. No firmware version or error codes. I tried twice. The gauges and lights did a cool little show and dance.

Off to check my battery cable connectors next.
GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 04:08 PM   #8
Jeeper
 
Join Date: Jun 2010
Posts: 24
Just tried to remove a battery connector, and it's good and stuck on there. Headed to the auto parts store for a scrubber and cleaner.
GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 05:36 PM   #9
Jeeper
 
Join Date: Jun 2010
Posts: 24
Quote:
Originally Posted by GatorInNola View Post
Just tried to remove a battery connector, and it's good and stuck on there. Headed to the auto parts store for a scrubber and cleaner.
Thanks to Jerry and Dex for your suggestions.

The battery clearer and scrub cost about $8 at the store, and after following the directions on the can, she started right up and worked like a charm.

I looked at the throttle body, and it looked surprising clean (for not having been cleaned in 3 years, and 60K miles). Is it worth taking apart and cleaning even if it appears spotless from the outside?


Throttle Body Closed (No Flash) by andrewgl1, on Flickr


Throttle Body, Inside (Flash) by andrewgl1, on Flickr
GatorInNola is offline   Quote Quick Reply
Old 01-09-2013, 06:38 PM   #10
Jeeper
 
Dextreme's Avatar
 
Join Date: Oct 2011
Location: Oregon City, OR
Posts: 3,516
Images: 1
As you can see its just 4 bolts to pop it off then you can douche it with Throttle body cleaner. The sensors that are on it (like the IAC) will probably be pretty dirty. I'd clean it.

__________________
'99 Chilli Pepper TJ Wrangler "Mistress"
33x12.5 DuraTracs
Zone 4.25"
Dextreme is offline   Quote Quick Reply
Old 01-09-2013, 06:44 PM   #11
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,452
Images: 2
Personally, I wouldn't bother removing the throttle body to clean it. A throttle body is really not much more than a hollow duct with a butterfly valve on the top & a few ports for sensors. I would remove the IAC & clean its plunger and the oriface in the throttle body that the IAC's plunger fits into. Then after resinstalling the IAC, I'd start the engine and while keeping the RPMs up, I'd just start spraying the TB's interior with TB cleaner. I first spray the back side of the butterfly valve with cleaner & wipe it with a rag. Once the can is empty, it should be fine. The IAC would be my #1 priority, only a couple small torx-screws hold it in place, T-25 IIRC.
Attached Images
   
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 01-09-2013, 07:50 PM   #12
Jeeper
 
Mom sold the Jeepster's Avatar
 
Join Date: Mar 2012
Location: Cincinnati
Posts: 247
Quote:
Originally Posted by GatorInNola

It cranks slow (much like a dead battery). It will only start if my foot is on the gas.
Mine did that same thing last week, drove to auto parts store with one foot on the gas one foot on the brake and got a new battery. No problems since.

Mom sold the Jeepster is online now   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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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



» Vendor Spotlight (Deals & More)
Jeep Parts - Jeep Wheels - Jeep Soft Tops
» Recent Threads

» Popular Tags
2014 advice audio bestop build bumper buying camping clutch death wobble doors electrical engine exhaust fenders for sale frame gears hardtop hard top help advice jeep jeep tj jeep wrangler jeep yj jku leak led lift lift advice lift kit lights manual mods mud newbie noise oem outdoorx4 parts quadratec radiator rims rubicon rust sahara shocks soft top speakers sport springs steering stereo stock subwoofer suspension suspension lift swap tire tires top transfer case transmission unlimited wheels wheels and tires winch wiring wrangler wrangler tj
» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 08:54 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