Mechanical Problems/Vehicle Issues and Fix-it Forum If you've got a problem you just can't figure out, a noise you can't diagnose, or a Check Engine Light that won't go away, ask about it here!

Okay To Drive Without Crank Sensor (a.k.a. CKP sensor)?

Thread Tools
 
Search this Thread
 
Old Sep 15, 2017
  #1  
honda.lioness's Avatar
Thread Starter
Registered!!
 
Joined: Oct 2009
Posts: 54
Likes: 0
Rep Power: 203
honda.lioness is a jewel in the roughhonda.lioness is a jewel in the roughhonda.lioness is a jewel in the rough
Okay To Drive Without Crank Sensor (a.k.a. CKP sensor)?

This is the CKP sensor, part #37500-PLC-015. I changed the timing belt the other day. While doing so, I broke the plastic holder on the sensor. That is, the sensor can no longer be bolted on. I tucked the sensor wire harness out of the way and put all back together. My Civic now has a CEL and takes excessive cranking to start (5-7 seconds?). Else my Civic drives okay. Am I damaging anything by driving my Civic until I can purchase and install a new sensor? Will the Civic reach a point where it will not start at all?

Last edited by honda.lioness; Sep 15, 2017 at 09:29 PM.
Reply
Old Sep 15, 2017
  #2  
ezone's Avatar
If you think a good mechanic is expensive, try hiring a bad one
 
Joined: Dec 2011
Posts: 32,017
Likes: 256
From: Midwest. Aiming about mid-chest
Rep Power: 518
ezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond repute
Re: Okay To Drive Without Crank Sensor (a.k.a. CKP sensor)?

I would recommend you do not drive it. The catalytic converter can be ruined, and that ain't cheap.
Reply
Old Sep 16, 2017
  #3  
honda.lioness's Avatar
Thread Starter
Registered!!
 
Joined: Oct 2009
Posts: 54
Likes: 0
Rep Power: 203
honda.lioness is a jewel in the roughhonda.lioness is a jewel in the roughhonda.lioness is a jewel in the rough
Re: Okay To Drive Without Crank Sensor (a.k.a. CKP sensor)?

Thank you, ezone. I fabricated a bracket for the old sensor. See photo. I am hoping to install it in the next few days. Think the CKP sensor will install and work okay? I am worried about how exact the alignment of the sensor must be and whether the metal of the bracket will cause a problem. I think the sensor responds yada when the two, close-together outboard teeth of the crankshaft sprocket pass it.
Attached Thumbnails Click image for larger version

Name:	HomeMadeCKPBracket.jpg
Views:	64
Size:	87.7 KB
ID:	111659  
Reply
Old Sep 16, 2017
  #4  
ezone's Avatar
If you think a good mechanic is expensive, try hiring a bad one
 
Joined: Dec 2011
Posts: 32,017
Likes: 256
From: Midwest. Aiming about mid-chest
Rep Power: 518
ezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond reputeezone has a reputation beyond repute
Re: Okay To Drive Without Crank Sensor (a.k.a. CKP sensor)?

Originally Posted by honda.lioness
Thank you, ezone. I fabricated a bracket for the old sensor. See photo. I am hoping to install it in the next few days. Think the CKP sensor will install and work okay? I am worried about how exact the alignment of the sensor must be and whether the metal of the bracket will cause a problem. I think the sensor responds yada when the two, close-together outboard teeth of the crankshaft sprocket pass it.

I see no photo? EDIT: I see it now...Oooh IDK if that will interfere with function.....why not just buy a new one?

The sensor triggers on every nub that sticks out of the crank gear.

The double trigger is so the PCM can "see" a programmed reference point such as cylinder 1/4 30*BTDC or some such (I forget, because I never needed to remember it).
Reply
Old Sep 17, 2017
  #5  
honda.lioness's Avatar
Thread Starter
Registered!!
 
Joined: Oct 2009
Posts: 54
Likes: 0
Rep Power: 203
honda.lioness is a jewel in the roughhonda.lioness is a jewel in the roughhonda.lioness is a jewel in the rough
Re: Okay To Drive Without Crank Sensor (a.k.a. CKP sensor)?

My local Honda dealer wanted $150+ for the sensor, and it would take a few days to arrive. Aftermarket sensors at NAPA and Autozone sell for about $80+. Denso is the manufacturer of the sensor. Denso sells it online for about $65, IIRC. Ebay sells the OEM sensor for about $50. But I did not want to wait several days. The nearest salvage yard with Civics is 65 miles away. I did not want to drive there and back without the sensor, because of what you (and other web sites) say about damaging the catalytic converter.

This morning I installed the old sensor with the homemade bracket shown. I drilled the bolt hole using measurements from photos on the web. I used the old grommet as a spacer, because the metal of the strap I made is soft. I cleared the CEL. So far it is working great. I head to the salvage yard in a few days to get a used sensor.

Thank you for your input. Your posts remain a great resource for me as a DIY-er.

Last edited by honda.lioness; Sep 17, 2017 at 04:48 PM.
Reply




All times are GMT -5. The time now is 11:33 AM.