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Unread 09-18-2013, 07:27 PM   #31
lander2312
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Holy crap.....that read really confusing. Not much in electrical stuff...hell to be honest not much on anything...but guess I gotta try if I want to learn.

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Unread 09-18-2013, 08:08 PM   #32
Luuca
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Quote:
Originally Posted by lander2312
Holy crap.....that read really confusing. Not much in electrical stuff...hell to be honest not much on anything...but guess I gotta try if I want to learn.
You should search for more threads on testing the TPS. Maybe find one with instructions that are more clear. That and you'll need a good multimeter.

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Unread 09-18-2013, 08:11 PM   #33
Que89YJ
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Blogging down is high fuel pressure or a bad mat sensor.
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Unread 09-18-2013, 08:32 PM   #34
lander2312
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I replace the mat sensor when I replaced the O2 sensor. Along with plugs and wires. I will try to check the wiring this weekend.
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Unread 09-18-2013, 09:23 PM   #35
Que89YJ
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You replaced the mat or the map? If you did then it's fuel pressure. Run the numbers and post them. I bet your pressure is high.
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Unread 09-18-2013, 09:56 PM   #36
lander2312
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Sorry i don't remember what it was called. I was told it would help with the bogging down. It was in between 2 black high pressure fuel lines right before they went into the fuel rail??? If that helps. I tried to post a pic but even after I resized it the site said it was too big. Still trying
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Unread 09-18-2013, 10:00 PM   #37
Que89YJ
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It sounds right. I am telling you then the fuel pressure. I have a decent track record and the guage cost nothing to borrow to do the test.
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Unread 09-18-2013, 10:05 PM   #38
lander2312
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No doubting you at all...going to def do the test just trying to give you all the info.
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Unread 09-19-2013, 11:01 AM   #39
Siva283
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Quote:
Originally Posted by Luuca View Post
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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[QUOTE=Magnum;14117863] I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim[/QUOTE]

[QUOTE=ldso;16498409]. It started with a $200 axle, and a few thousand dollars later I was done :)[/QUOTE]

[QUOTE=Luuca;16122017]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...[/QUOTE]

[QUOTE=Overhead;17658665]this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.[/QUOTE]
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Unread 09-19-2013, 05:23 PM   #40
lander2312
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Read some more threads and it excited that this might fix my problem. I also watched a few you tube videos of hot to check them and now it makes a lot more since to a guy who has never tested or replaced one of these....i will report back my findings when i get to the test. Will prob be Sunday before I can test the TPS
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Unread 09-19-2013, 05:47 PM   #41
Luuca
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Quote:
Originally Posted by lander2312
Read some more threads and it excited that this might fix my problem. I also watched a few you tube videos of hot to check them and now it makes a lot more since to a guy who has never tested or replaced one of these....i will report back my findings when i get to the test. Will prob be Sunday before I can test the TPS
As long as you're ok with waiting I am. Best of luck to you. I know you'll figure it out.

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Unread 09-19-2013, 06:02 PM   #42
lander2312
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Yeah I wish i could do it now but life with kids takes precedent. What type of life expectancy does a TPS sensor have? I have had the jeep a year and will assume it is the original one in it. Is it something that should just be replaced to have a more sound vehicle?
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Unread 09-19-2013, 06:06 PM   #43
Luuca
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Quote:
Originally Posted by lander2312 View Post
Yeah I wish i could do it now but life with kids takes precedent. What type of life expectancy does a TPS sensor have? I have had the jeep a year and will assume it is the original one in it. Is it something that should just be replaced to have a more sound vehicle?
They last till they're dead. All I know.

I wouldn't discount Que's urging to test the fuel pressure at the schraeder valve on the fuel rail.

Yo can get a Fuel Pressure Guage /tester at autozone or napa for less than $20 and it's a tool you will want to own for as long as you own your YJ.

Too much fuel pressure is bad, M'kay? Test it as well. You may have a bad fuel pressure regulator or a pinched fuel return line.
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Unread 09-19-2013, 06:36 PM   #44
Que89YJ
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Luuca you can rent the tool you don't even need to buy it. I think the pressure is high too. There have been at least a half dozen in the last couple month's with return line issues because of pinched lines and warped tanks. One guy took out 2 New regulators before I talked him through the pressure test. The symptom sounds like a fuel issue. The engine sounds like it's flooding. The tps is used by the ECU along with the map sensor to figure out injector dwell so I am not ruling it out but it usually fails by giving you a flat spot. The bogging down the way you describe it sounds like you are getting too much fuel.

One other thing for fuel that happens many times is an exhaust manifold leak that causes the o2 sensor to think the jeep is running lean and the ECU with dump fuel to protect the engine. It never usually gets bad enough to cause it to big down to the point of losing power but the difference is very noticeable. Hope the tps does it.
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Unread 09-19-2013, 07:02 PM   #45
Apollo12227
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Had this problem a few times, Que helped me solve the problem every time haha...

1st time: Cracked exhaust... as he mentioned.
2nd time: Pinched return line cauded me to burn through 2 pumps in 3 months.
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