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Topic Review (Newest First)
07-24-2014 06:30 PM
Curtis Doran So as expected after reading that last post, the new sensor with spacer did nothing.

I unplugged the tps, and the jeep starts and idles fine. The only code is for the tps circuit. I took it around the block and it is working perfect. With the tps plugged in, the same cps code comes back and jeep does not idle correctly:

Am I safe to say it's the tps?
07-23-2014 11:08 PM
tangofox007 The paper spacer is not applicable to all versions of the CPS. The versions that do use a spacer have an elongated bolt hole that allows for depth adjustment. If your CPS has a round hole with the bolt running longitudinal with the sensor, you don't need a spacer, as no depth adjustment is possible.

I believe that last Wrangler model to use the paper spacer was the 2001 with auto transmission.

More Information for STANDARD MOTOR PRODUCTS PC176

Quote:
Originally Posted by Curtis Doran View Post
I have a new ckp arriving tomorrow but coudn't get a spacer.
I suspect that there is a good reason for that.
07-23-2014 09:06 PM
Curtis Doran Thanks. I have a new ckp arriving tomorrow but coudn't get a spacer. I do have a caliper and found on another forum:

"It measures 14mm(.551) in diameter and most importantly .034 thick. I measured the thickness of a 12pk cardboard and cereal box cardboard and they only measure about .02 thick so you should find something almost twice as thick to cut one out of."

so I'm going to take the caliper tomorrow and find something that fits the thickness.
07-21-2014 03:41 PM
Coyote_94YJ Anytime. I would bet that it's the crankshaft position sensor that is causing your problems. I wouldn't mess with anything else until the new sensor and spacer are installed and you give that a try. Could you do me a favor? If you or someone you know has a set of digital calipers and could measure the thickness of the spacer and post that information up here that would be awesome. If you don't and you have a Harbor Freight or Sears near by you might take the spacer in and measure it in the store. You know... to test their tools out and see how accurate they are.
07-21-2014 01:04 PM
Curtis Doran Thanks for the response coyote!

I'll give you some more detail..

Was driving in a topless day event when all of a sudden I get a flashing engine light and the jeep goes into limp mode (no rev past 3000).

When I parked it, it would crank and crank but not start, as if it was not getting fuel. I kept cranking it for about ten seconds at a time and eventually it started. Engine light only flashed on the first event, now it is just on. P0335 crankshaft position sensor circuit is the only code, as read from my super chips programmer. Side note, no tune is installed on the jeep I just had a tuner from my ram.

Installed a new ckp without a spacer. Cleared the code started the jeep, it started first crank and I rejoiced.. Less than a minute idling, it stuttered and shut off. Same code.

So I bought a new camshaft sensor and changed that. No change.

Then I read in this thread that m109 pilot had been told by the dealer that the 06 needs a spacer. I also have since read that the 06 6speed specifically needs a spacer, but when I called my dealer, they told me they don't see one.. I'm really hoping this is the culprit, and have ordered a new sensor and a spacer

I've checked the battery cables and cleaned the terminals. I've switched batteries with the one from my ram to confirm I didn't have a dead cell in my battery.

I have not done anything with the throttle body, but will try that next.


Currently the jeep sometimes starts and sometimes does not. I can put the pedal to the floor and crank it over and sometimes it catches. If I leave it idling when It does start, it runs for a while, then the rpms start to drop slowly until eventually she stalls out unless I rev her back up. Still the same lone code, 0335.


Thanks again for your response, I wasn't sure I could revive this thread!
07-20-2014 02:58 AM
Coyote_94YJ
Quote:
Originally Posted by Curtis Doran View Post
Did anyone ever find a solution for this issue?

I've replaced my camshaft and crankshaft sensors. The jeep runs when it starts and it will continue to run for a while before eventually the rpms jump and then it stalls out. It wouldn't be the fuel pump if the engine will run for about five minutes can it? Could the engine be siphoning enough fuel to stay running even without the pump?

It's an 06 unlimited wrangler, 4.0l
The engine can't siphon fuel so to answer your question, no it isn't the fuel pump. Your fuel injectors do not create pressure. They simply open and close allowing the existing pressure created by the fuel pump in the tank to pass through it so they do not have the ability to induce a vacuum to create the siphon effect.

When your jeep dies after 5 minutes or so will it start right back up or is it dead until everything cools back down. Sounds like you might have a sensor or something that is reacting to the engine temp and is going out after it gets hot.
Quote:
Originally Posted by Evpjr View Post
mab, if the old CPS (crankshaft position sensor), wasn't bad why did you replace?
Also, a bad TPS (throttle position sensor) can produce these problems as well as a bad battery cable harness, or bad ground connection, or weak battery or...........Etc.
What I'm getting at is, that you need to check all of your electrical connections and wiring to eliminate a bad circuit somewhere.
Mab hasn't logged in since 2010 so I doubt he is going to answer your question.
07-17-2014 09:11 AM
Evpjr mab, if the old CPS (crankshaft position sensor), wasn't bad why did you replace?
Also, a bad TPS (throttle position sensor) can produce these problems as well as a bad battery cable harness, or bad ground connection, or weak battery or...........Etc.
What I'm getting at is, that you need to check all of your electrical connections and wiring to eliminate a bad circuit somewhere.
07-16-2014 11:29 PM
Curtis Doran Did anyone ever find a solution for this issue?

I've replaced my camshaft and crankshaft sensors. The jeep runs when it starts and it will continue to run for a while before eventually the rpms jump and then it stalls out. It wouldn't be the fuel pump if the engine will run for about five minutes can it? Could the engine be siphoning enough fuel to stay running even without the pump?

It's an 06 unlimited wrangler, 4.0l
07-20-2013 11:40 AM
damoose156 I'm dealing with a very similar issue. This has been very informative. Still sorting thru my no start issue. Pulling codes on Monday to see what shows up. Replace my coil and crank pos sensor so far with no results. See my thread for all the details and let me know what you think.

As far as this issue, how was it finally resolved? Was it one of the sensors that went bad, the coil, the brain or a combination of several things?
05-01-2013 05:33 PM
M109Pilot My problem is worse now that I have replaced the sensor. With or without the paper space, something isn't right.

Jason
05-01-2013 04:31 PM
M109Pilot Yes, thats it.

Jason
05-01-2013 04:22 PM
tangofox007
Quote:
Originally Posted by M109Pilot View Post
They look up my jeeps info by the VIN and showed me on paper that the paper spacer is required for my jeep.
Does your CPS look like this:

Duralast/Crankshaft Position Sensor (SU3315) | 2006 Jeep Wrangler 4WD 6 Cylinders S 4.0L SFI | AutoZone.com
05-01-2013 03:56 PM
M109Pilot I stopped by the Chrysler service place on my way home tonight because the jeep stalled on me while in 6th gear. They look up my jeeps info by the VIN and showed me on paper that the paper spacer is required for my jeep. I got the spacer from them and drove him with zero issues. Hopefully it's fixed.

Jason
05-01-2013 02:46 PM
tangofox007
Quote:
Originally Posted by M109Pilot View Post
My CPS has one bolt. Spacer needed?


Jason
No.

Just as not a 4.0L engines are the same, all one-bolt CPS's are not the same. An '06 CPS should have a bolt that is parallel to the sensor barrel and a round bolt hole.
05-01-2013 12:29 PM
M109Pilot My CPS has one bolt. Spacer needed?


Jason
05-01-2013 12:23 PM
tangofox007
Quote:
Originally Posted by Premo View Post

I have a 98 TJ with the 4.0l, 5speed manual. Does anyone know if I need the paper spacer?
You should have the two-bolt CPS. No spacer.

The CPS that requires a spacer features one bolt, transverse to the sensor and an elongated bolt hole.
05-01-2013 12:17 PM
Premo I have been looking for this spacer too. The folks at the parts store had no idea what I was talking about.

I have a 98 TJ with the 4.0l, 5speed manual. Does anyone know if I need the paper spacer?
I'd like to know I have all the parts I need before I start taking apart my daily driver.
05-01-2013 12:05 PM
tangofox007
Quote:
Originally Posted by M109Pilot View Post
Its a 2006 Rubicon LJ, 6 speed.
Spacer is n/a.
05-01-2013 10:41 AM
M109Pilot
Quote:
Originally Posted by tangofox007 View Post
Depends on the particular version of the CPS in question.

"The 4.0" means different things, depending on year model, etc.
I guess I should have included that information. Its a 2006 Rubicon LJ, 6 speed.

Jason
05-01-2013 10:32 AM
tangofox007
Quote:
Originally Posted by M109Pilot View Post
Is this paper spacer required for the 4.0?

Jason
Depends on the particular version of the CPS in question.

"The 4.0" means different things, depending on year model, etc.
05-01-2013 08:25 AM
M109Pilot Is this paper spacer required for the 4.0? And if I installed the new sensor without a spacer, is it too late to stick one on?

Jason
08-28-2012 05:43 PM
SeVeReDiStOrTiOn They sell the spacer separately but it's a rip off at $4 and some change. You just peel it off the backing and stick it on.
08-28-2012 02:15 PM
wheeliemay I know this is an old thread but I purchased a new CPS from the Chrysler dealer that did not include any spacer (or instructions). Had I not read this thread it would not have mattered--but now I'm wondering...what do you guys recommend?

97 2.5 manual
06-26-2012 04:33 PM
sgort2 Has anyone ever measured the thickness of the paper spacer?
10-15-2010 03:05 PM
mab After replacing the Crankshaft position sensor with an aftermarket part. The sensor failed because it was missing a very important piece of the puzzle and no instruction/pictures.
Bought new crankshaft position sensor from Chrysler Dealership...

Quote from Chrysler installation instructions:
"1. Be sure the paper/cardboard spacer has been installed to the bottom of the new sensor. If original sensor is being reinstalled (such as with transmission or flywheel removal), clean bottom of the sensor before installation. Obtain a new spacer and remove the paper backing. Install the self-adhesive side to bottom of sensor. This spacer MUST be installed. If spacer is not installed, sensor will be damaged when engine is started."

The aftermarket sensor did not come with a spacer and therefore it was damaged from the start!

After replacing with the sensor with spacer, it now runs good. Also had the dealership flash the settings and reset.
10-12-2010 10:42 PM
Littleyellow Not sure your problem was the same as mine but mine randonly shut off for no reason a few times and had trouble starting and staying running... Turned out tto be a dead battery , switched it out and goodbye problems... Dont know if thats it but ive seen stranger things happen so dont rule it out and its a simple thing to check
10-12-2010 05:12 PM
mab I'll replace the camshaft senor and go from there, rats!

Greatly thanks for the feed back...
10-11-2010 03:52 PM
Hardermods PCM = Powertrain Control Module.

If you keep getting the P1309 Code, then I'd be double and triple checking that Camshaft Position Sensor, not the Crankshaft Sensor.
10-11-2010 03:02 PM
mab installed new crankshaft position sensor > engine idles rough, replaced with old crankshaft position sensor > engine idles smooth, checked camshaft position sensor in distributor, while cranking engine: output from 0-5 volts.
plugs, wires & battery replaced prior to changing CKP.
Still get p1309, can reset, but returns. PCM > Pulse Code Modulation or Powertrain Control Module? Is the PCM in the engine compartment on firewall? What are the chances that the new crankshaft sensor is bad or does the engine have to warm up to get new signals over a period of time?
10-11-2010 02:37 AM
distortedtj ^^ Info you state is true....I hope you don't think I meant it would clear the PCM???

Just resets the comp. (ie clear his codes).

Everyone should always start with the basic's. Check things over and see if you have any codes first. Then dig into the bigger items.
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