Stalling at red lights...auto trans..please help!!!!!
11-02-2012, 03:16 PM
#21
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Quote by c17loadmaster:
"It should be noted that my JK always diesels when I shut it down (its always done that though) It will continue to run for 2-4 seconds after I shut it down and pull the key out."
This has me puzzled. When you turn your key off on a fuel-injected engine, it kills the fuel injectors and ignition. Without fuel, there can be no dieseling, unlike old carb setup.
Fuel, ignition and compression needed for "dieseling" is my point.
This brings me to a thought. First you would have to have "hotspots", usually glowing hot carbon build-up spots on the piston tops or cylinder heads. Next you would have to have a fuel source. Could this be form a bad EGR valve that is stuck open allowing unburnt exhaust gases being drawn into the cylinders?
I'm subscribing to this thread. If you find out what it is, please let us know.
I'd also use the factory plugs. Champion RE14PLP5 (Gapped to 0.050")
"It should be noted that my JK always diesels when I shut it down (its always done that though) It will continue to run for 2-4 seconds after I shut it down and pull the key out."
This has me puzzled. When you turn your key off on a fuel-injected engine, it kills the fuel injectors and ignition. Without fuel, there can be no dieseling, unlike old carb setup.
Fuel, ignition and compression needed for "dieseling" is my point.
This brings me to a thought. First you would have to have "hotspots", usually glowing hot carbon build-up spots on the piston tops or cylinder heads. Next you would have to have a fuel source. Could this be form a bad EGR valve that is stuck open allowing unburnt exhaust gases being drawn into the cylinders?
I'm subscribing to this thread. If you find out what it is, please let us know.
I'd also use the factory plugs. Champion RE14PLP5 (Gapped to 0.050")
11-02-2012, 05:01 PM
#22
JK Enthusiast
Thread Starter
Originally Posted by Zombie Hunter
Quote by c17loadmaster:
"It should be noted that my JK always diesels when I shut it down (its always done that though) It will continue to run for 2-4 seconds after I shut it down and pull the key out."
This has me puzzled. When you turn your key off on a fuel-injected engine, it kills the fuel injectors and ignition. Without fuel, there can be no dieseling, unlike old carb setup.
Fuel, ignition and compression needed for "dieseling" is my point.
This brings me to a thought. First you would have to have "hotspots", usually glowing hot carbon build-up spots on the piston tops or cylinder heads. Next you would have to have a fuel source. Could this be form a bad EGR valve that is stuck open allowing unburnt exhaust gases being drawn into the cylinders?
I'm subscribing to this thread. If you find out what it is, please let us know.
I'd also use the factory plugs. Champion RE14PLP5 (Gapped to 0.050")
"It should be noted that my JK always diesels when I shut it down (its always done that though) It will continue to run for 2-4 seconds after I shut it down and pull the key out."
This has me puzzled. When you turn your key off on a fuel-injected engine, it kills the fuel injectors and ignition. Without fuel, there can be no dieseling, unlike old carb setup.
Fuel, ignition and compression needed for "dieseling" is my point.
This brings me to a thought. First you would have to have "hotspots", usually glowing hot carbon build-up spots on the piston tops or cylinder heads. Next you would have to have a fuel source. Could this be form a bad EGR valve that is stuck open allowing unburnt exhaust gases being drawn into the cylinders?
I'm subscribing to this thread. If you find out what it is, please let us know.
I'd also use the factory plugs. Champion RE14PLP5 (Gapped to 0.050")
It us very strange. I just bought the champion plugs tonight, going to install them tomorrow. I need to figure out where the cam sensor is, and these vacuum lines are.
11-02-2012, 06:58 PM
#24
JK Enthusiast
Thread Starter
Originally Posted by Zombie Hunter
I think connector with the red mark, is connected to your cam sensor.
(not mine, a pic I found on this forum. His was leaking oil)
<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=384791"/>
(not mine, a pic I found on this forum. His was leaking oil)
<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=384791"/>
11-03-2012, 07:13 AM
#25
JK Enthusiast
Thread Starter
Well I just replaced the plugs. Ill see how it runs now. If it stalls again, ill replace the cam shaft position sensor.... If that doesnt do it Ill go after the EGR valve... If that doesnt work Ill trade it in for a chevy truck.
Checked the two vacuum lines i could find, running on the passenger side up near the battery, looked perfect and new.
Ahhhhh.
Checked the two vacuum lines i could find, running on the passenger side up near the battery, looked perfect and new.
Ahhhhh.
11-03-2012, 09:04 AM
#27
JK Jedi
Originally Posted by c17loadmaster
Update...... New plugs in. Now instead of stalling 4-8 times a week.... It has stalled 5 times TODAY
Wait automatic transmission stall? Last time i went off roading my jeep would almost stall but dam hope you fix this i think im changing my plugs this weekend
11-03-2012, 09:09 AM
#28
JK Enthusiast
Thread Starter
Originally Posted by Jeek.OlllllllO
Wth?
Wait automatic transmission stall? Last time i went off roading my jeep would almost stall but dam hope you fix this i think im changing my plugs this weekend
Only real options i can think of is cam position sensor, egr valve... But those have codes... And i dont.
This thing is really pissing me off
11-03-2012, 09:35 AM
#29
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Leaking injector + carbon buildup in cylinder = your dieseling issue. Just my 2 cents. That scenario would not throw a code since it happens after shutdown.
11-03-2012, 09:39 AM
#30
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