Last post on Nov 05, 2013 at 12:21 AM
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Jeep Wrangler, Scheduled Maintenance, Steering, Suspension, Tires, SUV
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#858 of 1888 Re: 1997 JEEP WRANGLER HESITATES [mac24]
Apr 24, 2007 (9:44 am)
I've replaced this on my TJ - last year actually - after driving a bit too fast through a mud hole.
On mine, I removed the air tube to get easier access (I have the 4cyl), then it was just a matter of unhooking the wiring from it, buying a new one at Autozone for 53.00, and reinstalling. Mine faced the firewall, so getting the screwdriver back there on a 4.5" lifted TJ was fun, but I did it w/o too much effort.
Ran SOOO much better.
#860 of 1888 1999 wrangler check engine light
Apr 27, 2007 (7:13 pm)
I have had the code po455 come up which is large vacume leak,however the engine runs fine when light comes on.It takes 3 days for it to reappear after canceling.I belive it is the filler seal or pump unit,anyone with information will be great?
#861 of 1888 Re: 1999 wrangler check engine light [1999tj]
Apr 28, 2007 (7:34 am)
P0455 is a large leak in the evaporative system. The filler cap is usually the prime suspect, followed by a leak in one of the vacuum hoses servicing the evap monitoring system. While it maybe the pump or its connection, the probability is low.
#862 of 1888 Re: 1999 wrangler check engine light [mac24]
Apr 28, 2007 (1:38 pm)
Thank's mac24, I have changed out 3 small vacume hoses that were brittle,I would like to know if the filler seal is leaking,would this cause the engine not to start on the first crank.It will start on the second or third crank? thank's for any information you have!
#863 of 1888 wrangler leaks
Apr 28, 2007 (1:44 pm)
I read where someone was haveing a water leak on there wrangler,mine also has a leak on the driver's side,get's the floor board soaked , I have found that if I park with the front down or lower than the rear, after a hard rain it is dry as a bug haven't sat in the seat during a rain to see where it is gettin in but it doesn't leak while driveing.
#864 of 1888 Re: 1999 wrangler check engine light [1999tj]
Apr 28, 2007 (4:42 pm)
No, slow starting is usually attributable to a fuel problem, either filter/pump or maybe a leaking injector.
#865 of 1888 Re: wrangler leaks [1999tj]
Apr 28, 2007 (4:47 pm)
Guessing the location of a water leak from the outside is problematic to say the least. Easiest and quickest solution is for you to be in the vehicle while a friend gets enthusiastic with garden hose. Have them start at the bottom and work up, rather than going from the top down.
#866 of 1888 Re: 1999 wrangler check engine light [mac24]
Apr 28, 2007 (5:21 pm)
Thank you so much mac24,you must be the guru on jeeps,i really appreciate this information.Could the pump going bad be the reason the code p0455(large vacume leak )is comeing on? To replace the filler seal, can I remove the screws from the outside or do I have to go from underneath?
#867 of 1888 Re: 1999 wrangler check engine light [1999tj]
Apr 29, 2007 (7:17 am)
No, I'm not a guru, but even if I was it wouldn't alter the answer I gave you previously.
The evap pump could be the source of the problem, but it's probably the least likely suspect.
While the joint between the filler tube and the filler neck could be leaking, you would need to access both sides to work on it. I'd try a new filler cap first, or do a thorough check of all the remaining evap system vacuum hoses, before looking for more unusual causes.