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97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

 
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Old 01-11-2010, 10:58 PM
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97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Hi Everyone,
I just registered myself. Just bought myself a 97 honda prelude with 154k miles on it for only $2k. I am fixing it to make my daily driving car. Now my question. I've never worked on a honda's before and I am not a mechanic. I did work on some of my cars which was all nissan. I bought this prelude with CKP problem. I do know they have to be replaced, and bought parts, but I do not know where these are located. I've did a little research and found out it's located with oil pump, but hell how hard is it to get it out and put it back? does anybody have photo of yourself replacing crank position sensor? I've got parts and tools. I just don't know where to start from. BTW couldn't find helms guide. if you know anything about these, please help.

P.S. it would be great to know know how long it will take to do the job.
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Old 01-11-2010, 11:26 PM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Here you can download the manual
SpoonerTuner.com - Free downloadable Honda Acura Factory Service Manuals by HELMS

And in this guide (for the timing belt) you can see where the sensors are. Scroll down the pics until you find it. It will also give you an idea on what you need to take off to get there.

DIY: Official 5th Gen Timing Belt Job Procedure! (by JLUDE 03/11/08) - Preludepower.com

Hope this helps you out.
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Old 01-13-2010, 12:48 AM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Thanks myself,
I've taken car apart. took all the belts out and PS pump, crank pulley. do you know how many bolts are holding lower timing belt cover? and when I was reading a helms guide, it said don't use impact wrench(drill) to install the crankshaft pulley. do you know reason why? or would it be okay to use it? I don't have the holder thing for the pulley so I had hard time pulling it out. Let me know what you think. It has been a big help :)
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Old 01-13-2010, 03:20 AM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

If you would have asked me this question a week ago I wouldn't have any idea, but the planets aligned in the perfect way so that last Friday my timing belt tensioner gave out and had to do a timing belt change. (I made a thread about it in this same section)

Me and a friend just finished changing the timing belt today.

About the lower timing belt cover, my friend was the one that toke it off so I'm not 100% sure but I think it had 4 bolts holding it. One of them is toward the back of the engine, kind of hard to get out because of the lack of space.

About the crank bolt, that thing is really hard to get off. My friend used a impact wrench but it didn't do anything. We ended up buying the holder (thanks God that I found it locally) and it came out fairly easy. I've heard that you can get it out with a impact wrench but it needs to put out at least 400 ft/lbs of torque.

When putting it back on we just used the impact wrench with some blue thread lock. (I wouldn't recommend the red one because you will need to take the bolt out again at some point in the future) If you use an impact wrench or torque wrench to put it back on, I wouldn't worry about it becoming loose because the engine runs counterclockwise and since the blot is normal threaded it basically tightens it self up over time.
And about the manual saying not to use the impact wrench I don't know why but I really doubt it will harm anything. We used one and the engine is working fine and a lot of people have used them before without anything bad happening.

PS If its been a while since you or the previous owner changed the timing belt now will be the perfect time to do it having everything apart.
Feel free to ask me anything else and good luck.
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Old 08-21-2010, 10:12 AM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Quote:
Originally Posted by pkdud1 View Post
Hi Everyone,
I just registered myself. Just bought myself a 97 honda prelude with 154k miles on it for only $2k. I am fixing it to make my daily driving car. Now my question. I've never worked on a honda's before and I am not a mechanic. I did work on some of my cars which was all nissan. I bought this prelude with CKP problem. I do know they have to be replaced, and bought parts, but I do not know where these are located. I've did a little research and found out it's located with oil pump, but hell how hard is it to get it out and put it back? does anybody have photo of yourself replacing crank position sensor? I've got parts and tools. I just don't know where to start from. BTW couldn't find helms guide. if you know anything about these, please help.

P.S. it would be great to know know how long it will take to do the job.
it is located in the distributor instead of down at the base of the crank. I converted my h23 to the h22 and used my old distributor/ harness, etc. to leave obd1 and took off the lower crank sensors. I am sure it can be done but research the obd1 distributor wiring diagrams to determine what you will have to hook up?

Last edited by devilmaycry; 08-23-2010 at 09:00 PM.
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Old 09-19-2010, 10:24 AM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Quote:
Originally Posted by devilmaycry View Post
it is located in the distributor instead of down at the base of the crank. I converted my h23 to the h22 and used my old distributor/ harness, etc. to leave obd1 and took off the lower crank sensors. I am sure it can be done but research the obd1 distributor wiring diagrams to determine what you will have to hook up?
I was thinking that the crank position sensor was in the distributor does anyone have a picture of it?
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Old 09-19-2010, 10:32 AM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

obd 1 usdm equals ckp in dizzy
obd 2 usdm equals ckp behind timing cover

you can rewire an obd1 dizzy to work as the pick up for ckp . i would do it the right way and fix the problem with out hacking up wiring .
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Old 06-29-2014, 09:24 AM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Oldie but goody thread re-opened.
This thread shows up in internet searches at the top when searching 'crank position sensor'. So I'm adding a bit more imfo.

^^ here's the part. Parts geeks.com has them. Others do too but they are a great source for oem Honda parts when the Honda warehouse is out of stock.

^^ the offending part(s).
So...
Why not go ahead and do a t-belt replace project while you're at it? And water pump too for that matter.

Chapter 6, pages 11-20 for the timing belt and 6-21 for the ckp/tdc sensor replace.

Mine is intermitant so I'm really hoping that grease build up on the outside is the trouble as my car doesn't have the t'belt cover. (Yet) Probably not, but why not start with the simple stuff, right?
All Gen. Prelude Service Manuals
^^ the manual link that still works.
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Last edited by bykfixer; 06-29-2014 at 09:32 AM.
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Old 10-23-2015, 02:51 PM
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Re: 97 HONDA PRELUDE CRANK POSITION SENSOR! HELP!@!@!@!@!!!!!

Im looking for the crank angle sensor wiring diagram on a honda prelude 2001 sh . Anyone out there tha can help me!

Last edited by almaxximo; 10-23-2015 at 02:53 PM.
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