Have a 07 3.8 6sp manual X. Got a 335 code but can't locate the sensor. Searched but can't find any info online. Any assist would be appreciated!

 

Crankshaft sensor is on the passenger side of the transmission bell housing. It's towards the front of it, only sensor in that area. Unplug the sensor, loosen the bolt (10mm head) and pull it out. I've gone through quite a few and always carry a spare on me.

 

Yep! See it. C-T-R, thanks a million. Was driving when suddenly lost power. Barely got her back home. Do you know if this would give me the 300 code - multiple cylinder misfire as well? and poss 420 - catalyst efficiency? Or are they unrelated?

 

The multiple misfire definitely, catalyst efficiency in not 100% sure on because that's a constant one on my jeep. The first time mine went it threw all kinds of crazy codes so it would be of no surprise to me. If it's not caused by the crank sensor then it's probably because of cracked manifolds. Hope you getter all tuned in.

 

Quick update… replaced Crank P Sensor the day after the last post. No change- was still throwing original 4 codes P0300 P0335 P0420 P0457 + 2 new codes P0430 and P0456. Today I replaced the wires, plugs, and put in a new coil pack. Still no joy - now throwing codes just P0300 and P0355 (last code twice). Could it be that the aftermarket BWD CPS simply won't work, and need to go Mopar?

 

I had the same problems a couple years ago. Went through everything you listed as well as camshaft sensor. It turned out being the crankshaft sensor harness. I picked one up from eBay along with the camshaft harness cheap (I can't remember exact details) just cut off the old one and splice on the new ones.

 

Interesting… I had that very thought since the harness is so exposed and close proximity to exhaust & engine heat - the wire conduit sleeve is dry & crumbling to pieces. Am going to go Mopar on the sensor first & return the BWD . Then I'll def. give the harness a shot. Can't thank you enough for sharing your experience on this. Would be completely at a loss otherwise.

 

No problem. Hope you get it all figured out. I've had lots of headaches over those issues.

 

UPDATE: in case it might help someone else in the same frustrating position:

I replaced the crank position sensor three times (1st 2 w BWD fr local parts store - 3rd fr Jeep dealer - Mopar sensor. Still 'no joy'. Still getting P0335 error!). With the final Mopar sensor installed, on Chuck-T-R's recommendation, I replaced the crank sensor connector / harness ($19 BWD connector PT 2266 from local O'Reilly's auto-parts - soldered all 3 connections). No more P0335 code!! PROGRESS! Thank you C-T-R! You're a saint!

But JK still throwing P0300. (AGHH! What the heck!)

So... still fishing, I removed and cleaned the throttle body, and ran Seafoam: 1/3 can through brake vacuum hose & 2/3 can in gas tank. Unbelievably, NO MORE MISFIRE! SUCCESS! Drove a few miles so far, and no issues! (holding my breath every mile... ).

With all I've read/watched on various Jeep forums and YouTube vids, I know misfire issues are difficult to troubleshoot and oft resurface in a day or week or... ? ... so am still not completely convinced of the fix. But for now am grateful and PRAYING that all's well. Will update after some miles on the JK or if codes reappear. (C-T-R how can I repay you 4 the assist?)

P.S. I'm aware that Seafoam treatment is somewhat controversial, but for the moment, I'm a believer. (Q: how can a simple Seafoam treatment eliminate misfire codes? Unbelievable. Seriously.)

 

No problem. Glad you've gotten it taken care of. It definitely is a shitty problem to track down. Just wondering, did you reset the battery after installing the new harness? I'm wondering if somehow it took a while to fix itself after the new connector. Hope you didn't spend too much money on fracking down the problem. Just know that you didn't really miss any troubleshooting so you would've most likely been in the same situation if you'd of taken it to a shop, except then you'd be paying labor. Lol.