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Hard right turns make the Jeep "stall" out... what

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KevinsOffroad.com

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Discussion starter · #1 ·
Hi all you tech-gurus...I'm having a little problem that I've not started to investigate yet...

When I make a right hand turn at say 10mph or greater, I'm intermittantly getting a delay in accelleration...almost as if there was air getting into the fuel supply when the fuel sloshes. I haven't noticed it enough to find out if the level of the tank has much to do with it, but I have noticed that seemed to be doing it more consistantly when the tank was near empty.

Just curious if anyone else has had this problem in the past and what you did to resolve it. Is this a ZJ thing, a D/C think, or an Exclusively Kevin's Jeep thing?

TIA,
-=Kevin=-
 
#2 ·
The exact same thing happened to me today. I took a left from a stop, hit the gas and half way through the turn the jeep immediately cut out. This is the second time it's done this for me...always when the gas is near empty. I'm trying to figure out what's going on too. When it cuts out, it is a complete power loss.
 
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#5 ·
At the risk of sounding foolish this is something that I had found once on an older ford. When the steering wheel is cranked hard in one direction, the power steering pump has to work harder. There is an electric high pressure switch in the pressure side of the pump to box hard line. From what I can remember.....when high pressure was sensed it sent a message to the computer instructing the rpm to be increased slightly to compensate for the extra load placed on the engine by the "stressed out" power steering pump. As I recall this fords switch was bad and the engine would sometimes die while turning. This was 5 or 6 years ago so I could have it totally messed up now. I am not even sure that jeep has a similiar setup. Besides it seems like you guys have it pegged at low fuel tank volume.
 
#6 ·
Kevin,
Mine was doing that for a while last summer, except a few times it completely died on me. I cleaned out the throttle body and the problem went away. Quick 5 minute fix that's definately worth a shot.
 
Discussion starter · #7 ·
ItsaJeepThing95 said:
Kevin,
Mine was doing that for a while last summer, except a few times it completely died on me. I cleaned out the throttle body and the problem went away. Quick 5 minute fix that's definately worth a shot.
Click to expand...
Hmmm...interesting. What did you clean it with...carb cleaner or did you disassemble it completely? For whatever reason (the lower tank thing) I'm guessing that this isn't my problem, but it's certainly the easist thing to try...and can't hurt having a clean TB, right?
 
Discussion starter · #8 ·
SKEETER said:
At the risk of sounding foolish this is something that I had found once on an older ford. When the steering wheel is cranked hard in one direction, the power steering pump has to work harder. There is an electric high pressure switch in the pressure side of the pump to box hard line. From what I can remember.....when high pressure was sensed it sent a message to the computer instructing the rpm to be increased slightly to compensate for the extra load placed on the engine by the "stressed out" power steering pump. As I recall this fords switch was bad and the engine would sometimes die while turning. This was 5 or 6 years ago so I could have it totally messed up now. I am not even sure that jeep has a similiar setup. Besides it seems like you guys have it pegged at low fuel tank volume.
Click to expand...
Skeeter:
Good idea...but this seems to happen while the Jeep has straightened out again AFTER a hard corner...or at least in my case it does. It just kind of stumbles...like it's getting air into the fuel and it's missing 3 or 4 injector fires or something... really weird, to say the least.
 
#9 ·
stalling on turns

Hey Kev, had two XJ's in the shop this year with same problem. Always under 1/8th tank and turning. Tried to simulate by ramping both left side tires pretty steeply and didn't happen. Had to have the centrifigal force going. Ended up being the fuel pump. The Chry pump uses the spring loaded body to compensate for the tank expansion/contraction thing. I figure somehow the o-ring seal on the pick-up shaft went bad and when the pump cocked from g-forces it broke the seal and dropped pressure? Wanted to take the old pumps apart to investigate but they were both warranty and the pumps had to go back in one piece. Good luck.
 
#11 ·
My jeep did the same thing expecially at the end of long road trips. I droive from San Diego to El Paso and I made a u-turn and it stalled twice. It also happend to me coming down from LA in traffic. Engine just turned off. Changed the fuel filter and it hasn't happend since.
 
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Discussion starter · #12 ·
Tommy said:
Changed the fuel filter and it hasn't happend since.
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See, that's what my first inclination was...maybe I'll swap it out and see if it makes any difference. Besides, this one has 60k on it...it's probably time! ;)

-=Kevin=-
 
#13 ·
Add me to the list. Happened to me to only on right turns. Never noticed fuel level because it only seemed to happen when I was turning in front of an oncoming vehicle therefore paying more attention to the fact that I may soon be getting rear-ended ;)

Pretty good suggestions though. Cheap fix would be the TB cleaning but can anyone explain why the TB would cause this specific problem? Fuel pump seems the more likely fix.
 
#14 ·
That happened to me with my 97 ZJ I6. however, it happened when the gas was low and i would try to accelerate from a stop. IT would putter like it was choking and sometimes die. I took thought it was the filter so i looked for it but couldnt find one. I took it to the dealer (have an extended warranty) and they said it was the filter, but the pump and the filter were one unit and had to replace the whole unit. Ever since the its been fine. It was a costly job thoug. i think it was somewhere around 3 or 4 bills. I forget though. (warrenty covered it)

Jonathan
 
#15 ·
Kevin: Be carefull when cleaning the body. I destroyed a TPS sensor. There is several cavities on the side of body that contain sensors. Spraying these sensors with cleaner will destroy them. And the last thing I want to be doing while driving to Moab is changing another fuel releated part :)

Chad
 
Discussion starter · #16 ·
chadjans said:
...And the last thing I want to be doing while driving to Moab is changing another fuel releated part :)

Chad
Click to expand...
LOL! Cody's bringing TWO ZJs this year...maybe we can change out BOTH filters for him, LOL!
 
Discussion starter · #17 ·
I fixed it!!!

Well, Gents, it seems that the problem WAS the fuel filter. My TB is extremely dirty (FIPK was leaking dirt in) but I didn't clean it just to make sure exactly what it was. The fuel filter was like $10, and a cheap way to make a stab in the dark if your Jeep is acting similarly.

Just thought I'd let everyone know...!

-=Kevin=-
 
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