Ripp'd JK P0174 and horrible gas mileage - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 38 Old 03-17-2015, 11:48 AM Thread Starter
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Ripp'd JK P0174 and horrible gas mileage

I really wish my jeep could go atleast 1 day without something going wrong. last night while driving home the CEL came on no misfires or anything I pulled over, got out the tuner and checked it. "P1074- Lean fuel condition" quick google search showed that this happens a good bit and that ripp said it was a false code. so kept driving home and that was when I noticed I had less than 3/4 tank of gas. I had just filled up and gone less than 30 miles. Anyone??????

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post #2 of 38 Old 03-17-2015, 12:56 PM
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Quote:
Originally Posted by leman View Post
I really wish my jeep could go atleast 1 day without something going wrong. last night while driving home the CEL came on no misfires or anything I pulled over, got out the tuner and checked it. "P1074- Lean fuel condition" quick google search showed that this happens a good bit and that ripp said it was a false code. so kept driving home and that was when I noticed I had less than 3/4 tank of gas. I had just filled up and gone less than 30 miles. Anyone??????
Please get a data log recreating the issue, email that file along with last tune written and original backup file to [email protected]. Put a brief description of what you are observing as well as year, make, model.

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post #3 of 38 Old 03-17-2015, 02:17 PM Thread Starter
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Last 2 I've sent I've never gotten a reply about. But I'll send another one
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post #4 of 38 Old 03-23-2015, 12:41 PM
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Last 2 I've sent I've never gotten a reply about. But I'll send another one
Please PM so I can get personal info.

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post #5 of 38 Old 03-24-2015, 07:50 AM
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hmm.. you have a RIPP supercharger, you are getting around 12mpg. That sounds about right to me. Plus winter gas is crap.. too much ethanol. Look for a gas station that sells lower ethanol. 10% ethanol sucks. not much energy in ethanol.. supercharger will cost more to run. At least in Massachusetts in the winter anyway.

Did you flash your jeep's computer with the latest code from RIPP ?

If you are really running lean you can burn your engine's top end out.

mpg will improve when your fuel rate is right.. not by much

I only know about supercharger overhead from other vehicles I had when I was younger. I never planned on installing one in my 2013 rig.
usually you add more torque on a 4x4 and if you don't upgrade the entire drive train, something breaks. I go off road.. don't want to break an axle
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post #6 of 38 Old 03-24-2015, 12:00 PM
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Originally Posted by leman View Post
Last 2 I've sent I've never gotten a reply about. But I'll send another one
oh I remember that oh so well, pain in the butt to get the imfo and then not receive a reply. or even worse waiting for a new tune finally getting it and is was the excact same tune you already had installed.

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post #7 of 38 Old 03-24-2015, 04:02 PM
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I've had pretty good luck when sending in log files. I hope you get an answer soon.

You didn't mention what year. 3.6 or 3.8?

In the mean time start looking for unmetered air getting into the intake or exhaust. Sometimes a small leak on the intake side can cause an actual lean condition, and if it's on the exhaust side, then it will cause a false lean condition. Either way the ECU will pour on the fuel to try to even out the lean condition, causing poor economy.

I'd start there as it sound like you are getting air into it that has not been accounted for by the ECU. Maybe check the dump valve/BOV ? If it's not closing all the way, you might be getting air in that way.

Good luck.


Edit: I see you have an '08....

_
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Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #8 of 38 Old 03-24-2015, 04:38 PM Thread Starter
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Quote:
Originally Posted by jerryn View Post
hmm.. you have a RIPP supercharger, you are getting around 12mpg. That sounds about right to me. Plus winter gas is crap.. too much ethanol. Look for a gas station that sells lower ethanol. 10% ethanol sucks. not much energy in ethanol.. supercharger will cost more to run. At least in Massachusetts in the winter anyway.

Did you flash your jeep's computer with the latest code from RIPP ?

If you are really running lean you can burn your engine's top end out.

mpg will improve when your fuel rate is right.. not by much

I only know about supercharger overhead from other vehicles I had when I was younger. I never planned on installing one in my 2013 rig.
usually you add more torque on a 4x4 and if you don't upgrade the entire drive train, something breaks. I go off road.. don't want to break an axle
Was getting 18-20mpg hand calculated when it's running right. Normally run 93 octane fuel or 89 no ethanol. And yes I've ran the latest update.

Haha my jeep is ran pretty hard off-road and built to take it...... When the engine is running right

Quote:
Originally Posted by greenenvey View Post
oh I remember that oh so well, pain in the butt to get the imfo and then not receive a reply. or even worse waiting for a new tune finally getting it and is was the excact same tune you already had installed.
Especially when all the computers in house are macs so I have to go 15 minutes down the road to my parents to do anything.

Quote:
Originally Posted by Guruman View Post
I've had pretty good luck when sending in log files. I hope you get an answer soon.

You didn't mention what year. 3.6 or 3.8?

In the mean time start looking for unmetered air getting into the intake or exhaust. Sometimes a small leak on the intake side can cause an actual lean condition, and if it's on the exhaust side, then it will cause a false lean condition. Either way the ECU will pour on the fuel to try to even out the lean condition, causing poor economy.

I'd start there as it sound like you are getting air into it that has not been accounted for by the ECU. Maybe check the dump valve/BOV ? If it's not closing all the way, you might be getting air in that way.

Good luck.


Edit: I see you have an '08....
Double checked exhaust for leaks and have a small one at the manifold but it's been there forever. Even when it was running right. Everything is tight on the intake side too.

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post #9 of 38 Old 03-25-2015, 06:23 PM Thread Starter
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Also now it is bouncing back and forth between throwing a code for lean and throwing a code for being rich.

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post #10 of 38 Old 03-26-2015, 07:45 AM
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You've got an air leak somewhere.

Under boost, some air gets out, causing a rich condition. Under vacuum, some air gets in causing a lean condition.

Did you check the BOV/Dump valve? If it we're stuck open a bit, it could cause exactly the condition you report.

_
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Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #11 of 38 Old 03-26-2015, 07:50 AM
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Also, since you are getting both a lean and a rich condition. I suspect the problem is on the intake side of the equation, somewhere between the blower and the cylinders.

Make a test cap to properly check for leaks. A tire valve, PVC cap, short connector, a rubber plumbing connector with clamps makes a great way to add air through the blower to pressurize and test everything.

_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #12 of 38 Old 03-26-2015, 07:55 AM
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Something like this.



_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #13 of 38 Old 03-26-2015, 10:23 AM
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[QUOTE=leman;3225658]Was getting 18-20mpg hand calculated when it's running right.

That is very good millage. I get 12 with 60's and 40's. Wounder if I have a leak or if 11-12 mpg is normal for big JK's?

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post #14 of 38 Old 03-26-2015, 10:31 AM
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[quote=OffRoadGeorge;3230050]
Quote:
Originally Posted by leman View Post
Was getting 18-20mpg hand calculated when it's running right.

That is very good millage. I get 12 with 60's and 40's. Wounder if I have a leak or if 11-12 mpg is normal for big JK's?
I agree. 18-20 is very good, almost too good to be true. I get maybe 15 on a good day. 3.6, altitude pulley, manual, on 37 MTR's with 4.11 gears.

_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #15 of 38 Old 03-26-2015, 10:43 AM Thread Starter
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Quote:
Originally Posted by Guruman View Post
Something like this.


Headed to lowes now.

[quote=OffRoadGeorge;3230050]
Quote:
Originally Posted by leman View Post
Was getting 18-20mpg hand calculated when it's running right.

That is very good millage. I get 12 with 60's and 40's. Wounder if I have a leak or if 11-12 mpg is normal for big JK's?
[quote=Guruman;3230058]
Quote:
Originally Posted by OffRoadGeorge View Post

I agree. 18-20 is very good, almost too good to be true. I get maybe 15 on a good day. 3.6, altitude pulley, manual, on 37 MTR's with 4.11 gears.

I'm on 35"s with 5.13s. 95% of my driving is through a state park and county roads doing 55mph.

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post #16 of 38 Old 03-26-2015, 03:22 PM Thread Starter
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clamped the seal with a Schrader valve on in place of the air filter. hit it with about 8 psi and it sounds like it is leaking from within the supercharger.

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Last edited by leman; 03-26-2015 at 03:25 PM.
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post #17 of 38 Old 03-26-2015, 03:40 PM
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I had a fair amount leaking from the union of the intake hat and the blower assembly. This is not usually a concern as it's not normally under pressure.

Check especially the BOV and around the intake. Do the 3.8's have a plastic intake like the 3.6's?

A short piece of rubber hose held up to the ear with one hand and pointing the other around in the engine bay can help find leaks, sort of like a stethoscope.

I still *really* suspect the BOV.

_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #18 of 38 Old 03-26-2015, 03:45 PM
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I suggest using a mechanics stethoscope, they are under $20 at places like Autozone and do a much better job of pin-pointing noises than putting a tube up to your ear.

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post #19 of 38 Old 03-26-2015, 04:02 PM
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Every mechanic's stethoscope I've seen had a solid rod as the "listening " end. They work well for finding valve clatter, rod slap and squeaking idler pulleys when pressed against the metal parts of the engine, but fell short of finding air leaks. The hose let's me "hunt" for it without pressing it against something solid. I just wave it around in the engine compartment all over and when I hear something, I can "follow" it to the source. YMMV, though.

_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

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post #20 of 38 Old 03-26-2015, 04:26 PM
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Hmm, on my mech stethoscope, you can pull off the metal probe and just use the open hose to listen for vacuum leaks. The benefit over sticking a tube to my ear is that the steth has ear buds the isolate out the rest of local noise.

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post #21 of 38 Old 03-26-2015, 04:29 PM Thread Starter
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Quote:
Originally Posted by Guruman View Post
I had a fair amount leaking from the union of the intake hat and the blower assembly. This is not usually a concern as it's not normally under pressure.

Check especially the BOV and around the intake. Do the 3.8's have a plastic intake like the 3.6's?

A short piece of rubber hose held up to the ear with one hand and pointing the other around in the engine bay can help find leaks, sort of like a stethoscope.

I still *really* suspect the BOV.
Alright good to know. Yes the intake is plastic. Haven't been able to get the system to hold pressure long enough for me to really hunt anywhere. I took the blow off valve off and checked it, and it seemed to be functioning fine. checked the tightness of the throttle body and one of the bolts was a little looser than the rest so maybe i had a small leak there. about to finish buttoning everything up and give her a spin.

still haven't heard back from ripp.

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post #22 of 38 Old 03-26-2015, 05:45 PM Thread Starter
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Well I feel like an idiot. So far so good on tightening up the throttle body.

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post #23 of 38 Old 03-26-2015, 06:23 PM
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Nice - it doesn't take much to cause a big problem

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post #24 of 38 Old 03-27-2015, 04:07 AM
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Awesome. I hope that's it.

_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

I've tried them all... Jeeps are still the best. (0||||0)
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post #25 of 38 Old 03-27-2015, 06:27 AM
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Let us know how much more power you have now that the supercharger is working right.
torque ? 0-60 time, horsepower, and did it help with steep climbs up rough terrain ?

Glad it was an easy fix. 18-20mpg That's great mpg with a supercharger. My stock 3.6L gets 16 - 18mpg in the winter.
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