Setting Cam Sensor

[turbo6leon]

Ok, brought the motor up to #1 TDC, compression stroke by bumping the starter & went the rest of the way to 25 degrees ATDC by hand. Put the CTS in with the window facing straight toward the drivers fender, put the cap on, plugged in the CTS tool, rotated the sensor 1/4 - 1/2 turn clockwise & then back counter-clockwise until the LED lit up, locked it down, plugged everything in & the car runs like crap, dumping TONS of fuel. I've done this twice now with the same results. What am I doing wrong? I'm missing something here & I'm starting to feel pretty stupid!! This is on a fresh motor. Sure glad I went with the roller cam.

Thanks,
Lee

 

[86gn]

Are you sure its not 180 out sounds like it

 

[FJM568]

I use a analog(needle style) voltmeter when I do this(easier to see exactly when the needle moves)...After you set crank to 25deg ATDC, with the ign on/engine off, backprobe the center wire with one probe and ground the other, turn the cam sensor clockwise until you see 7+ volts, rotate back counterclockwise until voltage goes to 0 and lock the cam sensor down...Works for me...Normally, I try to have the window pointed towards the front corner of the car/driver's side turn signal lamp instead of straight at the side fender, although it really don't make a difference, the ecm don't know or care...

If you are using the cam sensor setting gadget from Casper's, I don't know how he's got that set up to work, as I've never seen one used in person...

 

[motorhead]

I have been involved in this MORE times than I care to think about in the last 1.5 weeks. This is truely a two person job... one person needs to jamb their finger in the #1 spark plug hole while the other guy bumps the starter... when the guy with his finger in the plug hole has his finger launched out and yelps... you have found TDC @ #1... and continue around by hand as you have been doing.

One thing that I will suggest to everyone on this board is before you probe that B wire to death add a "lead" off of it. Something that you can probe without eating up the very difficult to repair weather pack connector.

I had to steal the cam sensor weather pack connector from my spare harness because my B wire was hanging on by a strand or two.

 

[FJM568]

Take a small stick pin or even unbend a small paperclip to stick in there between the weatherpack seal and wire, and not the actual probe from the voltmeter...Then take a jumper wire with an alligator clips at each end and attach one end to the stick pin/paperclip and the other end to the voltmeter probe...

 

[turbo6leon]

Thanks guys. I can't work on it again till Friday, was really hoping to have it finished last night but not meant to be I guess. I did this job about 4 years ago & ended up borrowing a voltmeter then too because I couldn't get the tool to work. I know people who have had great success with it. Anybody wanna buy one? j/k

Lee

 

[JASON]

I could be wrong but I think you pull #1 to TDC put the cam sensor in and then turn motor 25*(1.45") before you turn the sensor clockwise to around 7 volt and then counterclockwise till voltage drops,lock it down..........thats how I always done mine and it worked ...BUT if im wrong someone please tell me

 

[TRENT THOMPSON]

that is wrong! you set the motor too 25* after TDC then install the sensor and set it as above. I have done this about 10 times and have yet too have a car that wouldn't start

 

[Steve Wood]

According to the factory, Jason is correct. However, I have seen it done both ways.

 

[Steve Wood]

http://www.gnttype.org/techarea/ecmsensors/camsensor2.html

Note that this covers reinstalling the cam sensor whereas the other two pages on cam sensors are dealing with adjustment of an already installed sensor.

This link basically concurs with the factory prescribed technique from the manual.

 

[TRENT THOMPSON]

go over too either page 4 or 5 and find the other post about cam sensors there is a quote on there from chuck leeper describing what I sauid

 

[ohiogn]

I found out that it doesnt matter where you put the cam sensor in, as long as you can obtain the proper voltage when the engine is 25* ATDC. Nothing else matters. (not sure if that made any sense, but it does to me )

 

[Steve Wood]

Originally posted by TRENT THOMPSON
go over too either page 4 or 5 and find the other post about cam sensors there is a quote on there from chuck leeper describing what I sauid

If you read carefully what I said, you will discover that I stated that I had seen it work both ways but Jason was following the factory procedure.

I guess I should have merely said he was NOT wrong.

 

[motorhead]

Originally posted by ohiogn
I found out that it doesnt matter where you put the cam sensor in, as long as you can obtain the proper voltage when the engine is 25* ATDC. Nothing else matters. (not sure if that made any sense, but it does to me )

re-did mine AGAIN last night... and now it faces the firewall