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Unread 05-02-2013, 07:54 PM   #16
doc8669
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Quote:
Originally Posted by miami5th
I should also mention that I am using Bosch o2 sensors.
What was your mpg before installing the Bosch o2 sensor?

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Unread 05-02-2013, 09:19 PM   #17
86cj74.2L
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Quote:
Originally Posted by ezflip
Dump the crown TPS and get one from MOPAR. These things are very very picky about their sensors. Anything electronic, use nothing but Mopar.
Plus 100.

And when did you put the Bosch sensors in?

Mopar and Bosch do not get along very well. And using them with no issues associated with using then seems to be the exception.

Mopar or NTK brand sensors are what get along with the PCM.
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Unread 05-02-2013, 10:48 PM   #18
miami5th
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my mpg before the bosch sensor was a little lower, probably 17/18 city 21/22 highway
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Unread 05-02-2013, 11:16 PM   #19
pinky2252s
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Quote:
Originally Posted by 86cj74.2L View Post
Plus 100.

And when did you put the Bosch sensors in?

Mopar and Bosch do not get along very well. And using them with no issues associated with using then seems to be the exception.

Mopar or NTK brand sensors are what get along with the PCM.
Pretty sure Bosch makes the stock O2 sensors for Mopar. Also Bosch kind of invented the o2 sensor so I'd be surprised if it caused any negative affects.
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Unread 05-03-2013, 03:10 AM   #20
86cj74.2L
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And I know a lot of people that installed them thinking what your thinking and had nothing but problems.
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Unread 05-03-2013, 04:33 AM   #21
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A new update.

I unplugged the battery again for almost two hours this time, then plugged it again, and did my normal trips, now am getting around 16 mpg highway.

But from now on no any electronic for the jeep other than Mopar.

Talking about the oxygen sensors, am supposed to have one before the cat and one after, when i went under the car, i found one place before the cat but there was no sensor, just a plug, please check the photo below, can it be like this?!!!!



forumrunner_20130503_143534.jpg
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Unread 05-03-2013, 05:37 AM   #22
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Quote:
Originally Posted by pinky2252s View Post
Pretty sure Bosch makes the stock O2 sensors for Mopar. Also Bosch kind of invented the o2 sensor so I'd be surprised if it caused any negative affects.
Denso and NTK were the factory O2s. And, if you dont buy them directly from Mopar (even if they have the exact same part numbers) they are not made to Mopar spec. Ask me how I know. I dropped almost $1000 on O2 sensors a couple of months ago.
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Unread 05-03-2013, 05:54 AM   #23
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Quote:
Originally Posted by veiri86 View Post
A new update.

I unplugged the battery again for almost two hours this time, then plugged it again, and did my normal trips, now am getting around 16 mpg highway.

But from now on no any electronic for the jeep other than Mopar.

Talking about the oxygen sensors, am supposed to have one before the cat and one after, when i went under the car, i found one place before the cat but there was no sensor, just a plug, please check the photo below, can it be like this?!!!!



Attachment 620590
You may have that configuration because you are not subject to US emissions standards?
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Unread 05-03-2013, 10:54 AM   #24
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Quote:
Originally Posted by veiri86 View Post

Talking about the oxygen sensors, am supposed to have one before the cat and one after, when i went under the car, i found one place before the cat but there was no sensor, just a plug, please check the photo below, can it be like this?!!!!



Attachment 620590
Yes, That extra sensor is for US emissions standards. You should be fine!
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Unread 05-03-2013, 11:34 AM   #25
veiri86
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Wj

Quote:
Originally Posted by WJChris View Post
Yes, That extra sensor is for US emissions standards. You should be fine!
So is it possible my JGC runs without O2 sensors?
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Unread 05-03-2013, 06:28 PM   #26
doc8669
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So here's a question, what should the city/hwy mileage be on a 4.7L H.O V8 because mine evics reading between 12 hwy and 9/10 city(02 wj overland)

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Unread 05-03-2013, 06:34 PM   #27
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Quote:
Originally Posted by doc8669 View Post
So here's a question, what should the city/hwy mileage be on a 4.7L H.O V8 because mine evics reading between 12 hwy and 9/10 city(02 wj overland)

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Thats about where I am but Im also lifted 4" on 32" KMs and around 500# in extras.
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Unread 05-03-2013, 06:39 PM   #28
doc8669
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I researched it and online states 17 hwy and 12 city for the H.O model. I'm no where near that

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Unread 05-04-2013, 06:02 AM   #29
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Quote:
Originally Posted by doc8669 View Post
I researched it and online states 17 hwy and 12 city for the H.O model. I'm no where near that

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Ignore your evic. It is always wrong and never consistently so (could be over, could be under although they are generally optimistic). Calculate your mileage tank over tank. You aren't far off from what you should be getting, I average about 13mpg in mixed driving in my 02 overland with 2" lift and 31's. I'm sure if I could find a straight, flat piece of highway I would be amazed at what it could do, but that's just a dream where I live.
Do an odometer check! Half the people posting their fuel numbers don't even know what one is, and it's vital to knowing your true consumption. Try not to pay too much attention to the people who are averaging 25mpg on their lifted WJ, they are on another planet where all the roads are downhill. EPA ratings of that era were notoriously generous too.
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Unread 05-04-2013, 02:18 PM   #30
doc8669
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I was thinking of installing and CAI to get better numbers but I'm trying to decide if its worth it or not. We have some pretty cold winters up here and it would hinder the fuel consumption with the colder temperatures. I would probably have to put the stock one back and I don't want to do that

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