Can't find crankshaft position sensor - 4.7 V8 - JeepForum.com

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post #1 of 16 Old 02-20-2013, 06:04 PM Thread Starter
doomi
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Can't find crankshaft position sensor - 4.7 V8

I'm out here in 10 degree weather trying to get my Jeep started before our incoming snow storm. One of the suggestions was to replace the crankshaft position sensor, but I can't seem to find it under here. I do have the FSM, but the diagram is absolutely no help.

Can anybody tell me where it is (passenger/driver side, under hood/ under car, etc)?

A picture would be awesome if anybody happens to have one.

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post #2 of 16 Old 02-20-2013, 06:19 PM
99WJ539918
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Behind the starter on the passenger side.
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post #3 of 16 Old 02-20-2013, 06:37 PM Thread Starter
doomi
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Quote:
Originally Posted by 99WJ539918 View Post
Behind the starter on the passenger side.
Behind the starter as in towards the back of the Jeep. Or tucked up in behind the starter somewhere?

I'm looking at the starter, but not seeing any sensor.
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post #4 of 16 Old 02-20-2013, 06:53 PM
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Quote:
Originally Posted by doomi View Post
I'm looking at the starter, but not seeing any sensor.
You have to take the starter out first.
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post #5 of 16 Old 02-20-2013, 07:02 PM Thread Starter
doomi
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Originally Posted by narnwv View Post
You have to take the starter out first.
Man, that's not what I was hoping to hear. I'll find the starter removal procedure in the FSM, then the sensor should just be behind there?
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post #6 of 16 Old 02-20-2013, 07:03 PM
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Originally Posted by narnwv View Post
You have to take the starter out first.
+1
There's an O-ring that makes taking it out a pain in the a$$. Be careful not to drop it.
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post #7 of 16 Old 02-20-2013, 07:04 PM
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Quote:
Originally Posted by doomi View Post
Man, that's not what I was hoping to hear. I'll find the starter removal procedure in the FSM, then the sensor should just be behind there?
It's not bad. Disconnect the battery, pull 2 starter bolts, move starter out of the way, there's the CPS.

(though sometimes I forget mine's lifted and is easy to slide right up under)
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post #8 of 16 Old 02-20-2013, 07:28 PM Thread Starter
doomi
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Any tips for getting to the top bolt on the starter? I can't fit anything up in there with enough movement to back it out.
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post #9 of 16 Old 02-20-2013, 07:30 PM
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I used a deep socket and a 6" extension (I think) It's been a while since I had the starter out.
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post #10 of 16 Old 02-20-2013, 07:34 PM
99WJ539918
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I used a wobble extension or a swivel socket. I didn't remember it being that hard...?
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post #11 of 16 Old 02-20-2013, 07:42 PM Thread Starter
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Quote:
Originally Posted by narnwv View Post
I used a deep socket and a 6" extension (I think) It's been a while since I had the starter out.

Quote:
Originally Posted by 99WJ539918 View Post
I used a wobble extension or a swivel socket. I didn't remember it being that hard...?
Yeah, it's being a real pain. I can get a socket over the bolt, but I hit the transmission cooler lines with my wrench before I can get any movement.

I'm about to try a deep socket and extension. Hopefully it works or else I'm packing up for the night. It's waaaaay too cold to be working out here.
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post #12 of 16 Old 02-20-2013, 09:00 PM Thread Starter
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I used a deep socket and it popped it right off. The bolt wasn't even very tight, I just couldn't get to it.

Unfortunately my Jeep still won't run. Tonight I replaced the fuel pump, fuel filter and crankshaft position sensor. It will run for about two seconds then shut right down. For a long time it ran fine unless I tried to start it while warm... now it won't run at all. And I noticed something new tonight. The gauge cluster doesn't turn on when I turn the key to the on position.

I'm almost at a point of just giving up and letting this thing go for nothing. I don't drive it anymore since I got a new vehicle with much better gas mileage.
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post #13 of 16 Old 02-20-2013, 11:39 PM
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Are you getting any codes? Ive been thorough a whirl of starting problems, if it fires up then immediately dies it could be the TPS or the chip key sensor. Good luck, and I highly recommend only useing mopar replacements
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post #14 of 16 Old 02-20-2013, 11:48 PM
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Quote:
Originally Posted by doomi View Post
I used a deep socket and it popped it right off. The bolt wasn't even very tight, I just couldn't get to it.

Unfortunately my Jeep still won't run. Tonight I replaced the fuel pump, fuel filter and crankshaft position sensor. It will run for about two seconds then shut right down. For a long time it ran fine unless I tried to start it while warm... now it won't run at all. And I noticed something new tonight. The gauge cluster doesn't turn on when I turn the key to the on position.

I'm almost at a point of just giving up and letting this thing go for nothing. I don't drive it anymore since I got a new vehicle with much better gas mileage.
Ship it down to Florida, ill adopt it and give it a new home.

-TJ


1999 Grand Laredo 4x4: Whats left of a front bumper - JK Saharas' with 33's - 4 in. Rough Country lift - HID conversion - Double cardon conversion - TJ gas cap mod - Recovery points added - Painted cladding and grill - Skid plates - All moog suspension- Roof Rack -CB radio - Cut and trimmed fenders

http://www.jeepforum.com/forum/f197/...hread-1438516/

http://wjjeeps.com/
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post #15 of 16 Old 02-21-2013, 05:11 AM
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I'll give you nothi g for it.

Sent from the ISS using laser beams.
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