Renix temp sensor access
06-04-2022, 05:15 PM
#1
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Renix temp sensor access
What's the best way to get at the ECU temp sensor by the engine mount? If you jack up the frame does that improve things? I can't even really see it with the XJ just parked.
06-04-2022, 07:02 PM
#2
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Year: 1989
Model: Comanche (MJ)
Engine: 4.0
Jacking up by the frame gives you more room to slide under there, but otherwise long skinny arms help. I'm not sure if pulling the airbox out would let you get at it from above.
06-05-2022, 10:57 AM
#4
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Is it proven bad?
06-05-2022, 11:36 AM
#5
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Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
Check the sensor first as Cruiser suggests,
When I thought about replacing mine ('88) I figured I'd remove the motor mount to get better access. Thankfully I checked it and it was OK. As far as I know, it's still the original.
When I thought about replacing mine ('88) I figured I'd remove the motor mount to get better access. Thankfully I checked it and it was OK. As far as I know, it's still the original.
06-05-2022, 12:21 PM
#6
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No, and I will check before replacing. Are there just two pins in the plug or are there specific pins to measure against.
I've been reading up on causes for poor fuel economy as I'm getting about 10 mpg, and the exhaust always smells rich. T-stat is new and the upper rad hose gets hot and coolant will boil if the rad cap isn't on. Dash gauge never gets above 60-70C, but I realize that has nothing to do with the ECU.
I've been reading up on causes for poor fuel economy as I'm getting about 10 mpg, and the exhaust always smells rich. T-stat is new and the upper rad hose gets hot and coolant will boil if the rad cap isn't on. Dash gauge never gets above 60-70C, but I realize that has nothing to do with the ECU.
06-05-2022, 03:09 PM
#7
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Year: 1988
Model: Cherokee (XJ)
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Yep, just two pins. Polarity doesn't matter. Make sure your disconnect it when you measure resistance. Check cold first, reconnect it, drive around to get the engine hot, then carefully disconnect (it's hot!) and test again.
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06-05-2022, 03:11 PM
#8
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Year: 1988
Model: Cherokee
Engine: 4.0
Note from DJ
What is the YEAR OF YOUR JEEP? And is it a CHEROKEE or a GRAND CHEROKEE?
Always remember that we are not looking over your shoulder, so sometimes the details like my questions above will help you solve your problem. Thanks for the information that that you provided in your post 6.
For the onlookers 60C=140F and 70C=158F
What is the YEAR OF YOUR JEEP? And is it a CHEROKEE or a GRAND CHEROKEE?
Always remember that we are not looking over your shoulder, so sometimes the details like my questions above will help you solve your problem. Thanks for the information that that you provided in your post 6.
For the onlookers 60C=140F and 70C=158F
06-05-2022, 03:19 PM
#9
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Year: 1990
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MAP sensor is much more likely, as is the hose/tubing going to it.
Have you ever completed Tips 1 through 5 at www.cruiser54.com?
Have you ever completed Tips 1 through 5 at www.cruiser54.com?
06-05-2022, 05:05 PM
#10
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Thread Starter
Note from DJ
What is the YEAR OF YOUR JEEP? And is it a CHEROKEE or a GRAND CHEROKEE?
Always remember that we are not looking over your shoulder, so sometimes the details like my questions above will help you solve your problem. Thanks for the information that that you provided in your post 6.
For the onlookers 60C=140F and 70C=158F
What is the YEAR OF YOUR JEEP? And is it a CHEROKEE or a GRAND CHEROKEE?
Always remember that we are not looking over your shoulder, so sometimes the details like my questions above will help you solve your problem. Thanks for the information that that you provided in your post 6.
For the onlookers 60C=140F and 70C=158F
06-05-2022, 05:11 PM
#11
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Year: 1990
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You really need to complete Tips 1 through 5 at www.cruiser54.com first.
Last edited by cruiser54; 06-05-2022 at 06:06 PM.
06-05-2022, 06:06 PM
#13
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Year: 1990
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No. Fat fingers!!
06-05-2022, 07:23 PM
#15
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