Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - Reply to Topic
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace

Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Tech Discussions > Focus Tuning Chat > knock sensor issues

Focus Tuning Chat Discuss performance tuning options for your Ford Focus.

Search This Forum | Image Search | Advanced Search    
FocusFest FocusFanatics Merchandise

Thread: knock sensor issues Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What I Drive
Year, color, and model of your car. Example: 2003 Pitch Black ZX3
Your real name.
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
01-19-2012 01:26 PM
Originally Posted by SVTRSST View Post
eggyolk did you find out the problem?
No I never did find out the problem. I've re-clearanced my buckets back into spec on the tighter side, nothing. Replaced KS, nothing. Undid the serpentine belt and knock still showed so that elminated all the accessories. Since then, I've done a MTX swap and nothing changed eliminating the ATX. Ran 91oct with stock tune and also a mix of 4 gallons 91 oct with 5 gallons 100 oct, once again nothing changed. Checked the timing belt idler and tensioner when I had to pull the cams to clearance the buckets, it all felt/sounded fine. Really have no idea why it was doing that. I'm hoping to finish my built motor by summer so we'll see if it shows knock on a whole new motor.

After trying all that, Tom just turned down the KS sensitivity in the tune, now I only show knock very rarely but 99.5% of the time, it shows flat line.
01-19-2012 12:18 AM
SVTRSST eggyolk did you find out the problem?
07-04-2011 11:24 AM
iceberg65 Interesting topic for me (it was my motor that had the KS issue mentioned above)

To be specific it's a cougar (zx3 style zetec) with a focus zetec swapped in; which is why the Cam sensor wasn't plugged in to start with (it's on the opposite cam).... no idea why it acted this way.

I hope you figure out your issues It mostly just takes time (I'm not done yet either)
06-19-2011 11:01 AM
1turbofocus I wouldnt think you should still be seeing the KS making changes with the KS unplugged but the KS is proving to be interesting , I am doing a ZX2 that we have not been able to log the KS at all and he plugged in the cam sensor and now the KS is logging changes

You can use used buckets with new cams or used cams you will be fine

06-19-2011 12:43 AM
EggYolkedZX3 Bump for my last two questions if anyone knows. Looking to work on this throughout this next week.
06-11-2011 07:35 PM
EggYolkedZX3 I'm gonna go ahead and bump this back up since I just graduated high school and have all the time in the world to play with this right now. Have a couple questions...

1. With the KS unplugged, should I still be getting a reading from my KS retard on Live Link? It advances and retards still even though its unplugged.

2. As I said before, I got alot of different size buckets off a friend. Does it matter if they're used? I know it used to be if you were using a used cam, you'd need new buckets because of the wear patterns. Does this still apply to todays newer hardened materials, etc?

Thanks in advance!
05-08-2011 03:15 PM
Originally Posted by BowerR64 View Post
When was the last time you had the clutch looked at or replaced?

Does it shift funny or clunk into gear when shifting? flex plate cracked maybe?

I would hate to think you have bad rods
This is an ATX car.... for now. But everything shifts just fine and feels fine. I heel a slight whistle when I decelerate in gear. Dont think its an issue though. Also I hear a sound that sounds like a rattle that knock would make coming from the back of the car, could the KS actually here it if the noise was coming from somewhere in the back? I started heaing it after doing my SVT brake swap way back when before getting my tune.

Got all the buckets off my friend so I'll be re-clearancing the cams when I get a chance.
05-04-2011 01:28 AM
BowerR64 When was the last time you had the clutch looked at or replaced?

Does it shift funny or clunk into gear when shifting? flex plate cracked maybe?

I would hate to think you have bad rods
05-04-2011 12:51 AM
EggYolkedZX3 I tried my test I posted above just now. Knock still shows, but at least I eliminated a bunch of possible causes. It cant be anything in the accessories.

Re-clearancing the cams will come this weekend. I'll continue updating this untill I find the cause.
05-03-2011 01:41 AM
Originally Posted by redZX300 View Post
How is thins coming alon egg?
I'm still working on it slowly but surely. Tomorrow, I'm going to try taking the serpentine belt off and run the car long enough to see if I get knock or not. If nothing shows then it would eliminate possible noise from the serpentine pully, tensioner, water pump, alternator, A/C, power steering, etc. Hopefully that method can eliminate a lot of possible causes.

Now out of curosity, if I did have real unaudiable knock, then what would be some things that cause it? What if it was real knock while running 91 oct on the stock 87 oct tune?
This thread has more than 10 replies. Click here to review the whole thread.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -5. The time now is 02:54 PM.

Copyright 2002-2015 All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac ATS Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum, Civic Type-R Forum and Volvo XC90 Forum.


Search Engine Optimization by vBSEO 3.6.1