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post #16 of 203 Old 09-17-2013, 09:39 PM Thread Starter
lander2312
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i actually have one of those....and didnt think about that. Will try it tomorrow

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post #17 of 203 Old 09-17-2013, 09:43 PM
bigbossd1030
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Quote:
Originally Posted by lander2312
i actually have one of those....and didnt think about that. Will try it tomorrow
Make sure it's a sealed cam and safe for use in flammable areas, mine is. I always thought they all were. Just be careful, as much as those old Saturday cartoons made explosions look... Your beak won't work right after that.

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post #18 of 203 Old 09-17-2013, 09:43 PM
GrantYJ
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Originally Posted by lander2312 View Post
Any way to check that out WITHOUT dropping the tank? Just have heard its a pain to drop it....looks like I have found my project for the weekend.
If you end up pulling the tank, I highly recommend cutting a door into the bed above the fuel tank. I can give you location dimensions if you're interested (It only takes needing it once for you to be sold on the modification).

“The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed.” ― Robert M. Pirsig, Zen And The Art Of Motorcycle Maintenance: An Inquiry Into Values
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post #19 of 203 Old 09-17-2013, 09:44 PM
Que89YJ
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Get a pressure guage from the tool loan program at any of the big parts store. If you want to troubleshoot what's going on. You need it to too troubleshoot what is going on. Without it you are just throwing parts and guessing.
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post #20 of 203 Old 09-17-2013, 09:58 PM Thread Starter
lander2312
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Quote:
Originally Posted by bigbossd1030 View Post
Make sure it's a sealed cam and safe for use in flammable areas, mine is. I always thought they all were. Just be careful, as much as those old Saturday cartoons made explosions look... Your beak won't work right after that.
Yeah I hear ya....I actually have a nice top of the line one from work...they made sure to let me know it was 17,000.00 to purchase so to not break it...lol...it actually articulates and everything...haha
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post #21 of 203 Old 09-17-2013, 10:00 PM Thread Starter
lander2312
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Originally Posted by Que89YJ View Post
Get a pressure guage from the tool loan program at any of the big parts store. If you want to troubleshoot what's going on. You need it to too troubleshoot what is going on. Without it you are just throwing parts and guessing.
Where would I hook this guage up at. Already had a pressure guage hooked up to the rail and it was fine. It doesnt do this all the time...just every now and then so i cant duplicate it when trying to diagnose. It used to do it more when down to a 1/4 tank but the other day it did it right after i filled up.
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post #22 of 203 Old 09-17-2013, 10:30 PM
GrantYJ
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Originally Posted by lander2312 View Post

Where would I hook this guage up at. Already had a pressure guage hooked up to the rail and it was fine. It doesnt do this all the time...just every now and then so i cant duplicate it when trying to diagnose. It used to do it more when down to a 1/4 tank but the other day it did it right after i filled up.
It needs to be hooked on the rail.

“The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed.” ― Robert M. Pirsig, Zen And The Art Of Motorcycle Maintenance: An Inquiry Into Values
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post #23 of 203 Old 09-18-2013, 05:57 AM
Que89YJ
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What was the pressure? 31 psi running, 39 psi with the vacuum line to the pressure regulator disconnected, and it should hold pressure for 20 minutes above 20 psi. If the pressure is high it makes sense with the symptoms.
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post #24 of 203 Old 09-18-2013, 06:10 AM
pasinbuy
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It is not hard to drop the tank. Just have it low on fuel. Easy job.

Sounds to me the like fuel pump. On some Yjs 1/4 tank is close to empty. My Yj it is 1/8 tank and she is crying for fuel. If you let her go low on fuel you may have run the pump hot which will give you trouble as you describe.

Not a good thing to run electric fuel pump low on fuel.
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post #25 of 203 Old 09-18-2013, 04:29 PM Thread Starter
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You know now that you say that....after I bought it a few months later I let it run close to empty to see if the gauge was even close to accurate. So I ran it to close to E and then filled up....it started after that soooo I might have affected the pump.

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post #26 of 203 Old 09-18-2013, 04:34 PM
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High pressure at the rail could be caused by a bad Fuel pressure regulator or a pinched return line. We need more specific information about temps when it bogs down and any other situational data you can give.
Try to work with Que (who posted above) and diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...

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post #27 of 203 Old 09-18-2013, 04:52 PM Thread Starter
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That's the problem I have been trying to figure out where the commonalities are and there aren't any. The operating temp doesn't seem to matter. It use to do it more when it was at about a quarter tank but the other day it did it pulling away from filling up at the pump. I have replaced pretty much everything except the inner workings of the tank.

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post #28 of 203 Old 09-18-2013, 05:05 PM
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Quote:
Originally Posted by lander2312 View Post
That's the problem I have been trying to figure out where the commonalities are and there aren't any. The operating temp doesn't seem to matter. It use to do it more when it was at about a quarter tank but the other day it did it pulling away from filling up at the pump. I have replaced pretty much everything except the inner workings of the tank.
May not be fuel related at all. Testing your TPS may be easier than a tank dive.

91 YJ "Alice" 4.0L, AX-15, NP 231 w/HnT Flange, Adams Driveshafts F/R, 2.5" OME 36Rs, 5/8" /f12 Booms, 32" Yoko ATs, 4.10 D30/35 Aussie Lockers F/R Busted Knuckles YJOTM never
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post #29 of 203 Old 09-18-2013, 05:31 PM Thread Starter
lander2312
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OK....so how do I go about testing it and what do I need. I had the fuel rail tested at a mechanic shop.

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post #30 of 203 Old 09-18-2013, 05:38 PM
Luuca
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Originally Posted by lander2312 View Post
OK....so how do I go about testing it and what do I need. I had the fuel rail tested at a mechanic shop.
A quick SEARCH of the YJ forums using Keywords Testing TPS yielded this thread.

http://www.jeepforum.com/forum/f12/t...issue-1424373/

different symptoms, but a decent description on how to check the TPS.

Further searches may prove more successful, or Que could pop in and save the day. Either way...

91 YJ "Alice" 4.0L, AX-15, NP 231 w/HnT Flange, Adams Driveshafts F/R, 2.5" OME 36Rs, 5/8" /f12 Booms, 32" Yoko ATs, 4.10 D30/35 Aussie Lockers F/R Busted Knuckles YJOTM never
05 LJ Rubicon "Ghost"

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