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XJ Ask the Question Thread
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Year: '99 and '91
Model: Cherokee
I think they had different output spline counts from 87-90 and 91+ could be wrong but I know the tcases have different input spline counts so.... lol
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Year: 1999
Engine: 4.0 Inline 6
Originally Posted by Cherrybomb
will it still work that way if the alternator is on a seperate belt?
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Year: 1990
Model: Cherokee
Engine: 4.0 I6
How to get MPG using corrected data
Without getting too technical, my odometer is off 2 MPH where my GPS shows 50 MPH and where the speedometer shows 52. I take that as a simple 4% offset. Please tell me if I'm doing this right.
To calculate the true MPG,
1. I would fill up at a gas station, record mileage or reset odometer.
2. Run near empty, fill up. Record mileage again or record odometer.
3. Subtract mileage from #1 from #2, write down if needed, or just the odometer reading
4. Now, I would take that reading, and add 'plus 4 percent' or .04
Example: Total odometer reading for trip = 320 miles times .04 = 320 x .04 = 12.8 and then add 320 = 332.8 total corrected trip miles
5. Take 332.8 and divide by the number gallons on fill up: 19.2 Gallons
332.8 / 19.2 = 17.3 mpg
This looks right to me. I know it doesn't show low end and high end speeds where the speedo may be less or more off, but I think it gets close.
Any math wizards out there to confirm a bit?
NOTE: THERE IS A CORRECTED VERSION LATER ON in this thread!
To calculate the true MPG,
1. I would fill up at a gas station, record mileage or reset odometer.
2. Run near empty, fill up. Record mileage again or record odometer.
3. Subtract mileage from #1 from #2, write down if needed, or just the odometer reading
4. Now, I would take that reading, and add 'plus 4 percent' or .04
Example: Total odometer reading for trip = 320 miles times .04 = 320 x .04 = 12.8 and then add 320 = 332.8 total corrected trip miles
5. Take 332.8 and divide by the number gallons on fill up: 19.2 Gallons
332.8 / 19.2 = 17.3 mpg
This looks right to me. I know it doesn't show low end and high end speeds where the speedo may be less or more off, but I think it gets close.
Any math wizards out there to confirm a bit?
NOTE: THERE IS A CORRECTED VERSION LATER ON in this thread!
Last edited by BobF; 11-21-2012 at 02:23 PM. Reason: correction
CF Veteran
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Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
Anyone know the proper V8 ZJ tie rod part number from O'Rielly and Autozone?
I know theres a few different tie rods with different names on their websites.
Also is the one to replace the driverside tie rod? If they are cheap id like to replace them all next week.
I know theres a few different tie rods with different names on their websites.
Also is the one to replace the driverside tie rod? If they are cheap id like to replace them all next week.
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Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Originally Posted by Cherrybomb
will it still work that way if the alternator is on a seperate belt?
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Without getting too technical, my odometer is off 2 MPH where my GPS shows 50 MPH and where the speedometer shows 52. I take that as a simple 4% offset. Please tell me if I'm doing this right.
To calculate the true MPG,
1. I would fill up at a gas station, record mileage or reset odometer.
2. Run near empty, fill up. Record mileage again or record odometer.
3. Subtract mileage from #1 from #2, write down if needed, or just the odometer reading
4. Now, I would take that reading, and add 'plus 4 percent' or .04
Example: Total odometer reading for trip = 320 miles times .04 = 320 x .04 = 12.8 and then add 320 = 332.8 total corrected trip miles
5. Take 332.8 and divide by the number gallons on fill up: 19.2 Gallons
332.8 / 19.2 = 17.3 mpg
This looks right to me. I know it doesn't show low end and high end speeds where the speedo may be less or more off, but I think it gets close.
Any math wizards out there to confirm a bit?
To calculate the true MPG,
1. I would fill up at a gas station, record mileage or reset odometer.
2. Run near empty, fill up. Record mileage again or record odometer.
3. Subtract mileage from #1 from #2, write down if needed, or just the odometer reading
4. Now, I would take that reading, and add 'plus 4 percent' or .04
Example: Total odometer reading for trip = 320 miles times .04 = 320 x .04 = 12.8 and then add 320 = 332.8 total corrected trip miles
5. Take 332.8 and divide by the number gallons on fill up: 19.2 Gallons
332.8 / 19.2 = 17.3 mpg
This looks right to me. I know it doesn't show low end and high end speeds where the speedo may be less or more off, but I think it gets close.
Any math wizards out there to confirm a bit?
CF Veteran
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Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
Random thought... Would you be able to switch the drivers and passenger seats? Are they the same where they mount to the brackets?
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Year: 1991
Model: Cherokee
Engine: 4.0
How do I do about asking a question? I am not seeing on this site where to post a question. I think this one is for replying to a question? I did not see any instructions on how to get to the site for entering a question.
Precept
Precept
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Year: 1998
Model: Cherokee
Engine: 4.0
Im about to make bastard packs with xj leafs and s10 leafs but cant find leaf centerpins at any parts store. Does anyone know what size I need if I were to order offline? Will these work? http://www.ebay.com/itm/Tuff-Country...ht_1498wt_1163
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Year: 1994
Model: Cherokee
Engine: 4.0
Originally Posted by Precept
How do I do about asking a question? I am not seeing on this site where to post a question. I think this one is for replying to a question? I did not see any instructions on how to get to the site for entering a question.
Precept
Precept
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Year: 1999 Jeep Cherokee
Model: Cherokee
Engine: 4.0
So, find a working cluster from a similar year model with almost same millage. Are all of the proper wiring harnesses already run to the old cluster? They just run idiot lights instead of actual gauges? I get replacing the sending unit, but what about the tach and others? Plug and play?
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Yup. Plug 'n play. Chrysler loved to run wire (albeit poorly), though I think it's the same connectors. Gauge cluster on newer models has it's own circuitry inside so it's really just a matter of whether it has the gauges or not. Aside from oil pressure sender the ECU already knows about engine RPM, temp, voltage, and speed. Older models had two temperature sensors, one for the ECU and one for the gauge. No idea why.
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Year: 1999 Jeep Cherokee
Model: Cherokee
Engine: 4.0
Yup. Plug 'n play. Chrysler loved to run wire (albeit poorly), though I think it's the same connectors. Gauge cluster on newer models has it's own circuitry inside so it's really just a matter of whether it has the gauges or not. Aside from oil pressure sender the ECU already knows about engine RPM, temp, voltage, and speed. Older models had two temperature sensors, one for the ECU and one for the gauge. No idea why.
It appears in my 99 no new sending units required. Just plug and play. Dash out, old cluster out, new cluster in, dash in. Looks like a project for next weekend. Thanks.