lightweight flywheel problem. almost sorted out....need help from the Gear Heads!!!

enohand · 03-04-2009, 03:33 PM

ok well according to JGY's site, their flywheels DO NOT throw a SES light. I on the other hand am experiencing one. I know that the reason is because of the teeth on the flywheel. im guessing the JGY FW has 109 teeth on it, & my 96 G20 needs the 108 teeth one (not sure on that statement, but pretty sure),

also not sure if the tooth thing is a issue, supposedly the crank position sensor is a magnetic sensor of some sort...could it be that all these flywheels that trip the light aren't made out of a matl. that picks up/generates a correct magnetic fields?

which sensor determines this? is it the one in the front of the bell housing? is it the starter? how does it determine it? does it count the teeth? or is it a magnetic thing?

what im looking to do is somehow trick the ECU into thinking the flywheel is correct.

im guessing that the voltage from the sensor is different when you have a 109 tooth wheel in there, but needed a 108. & vice versa.....so if someone could find out what the voltage should be & post it, i could then check mine & figure out how much its off by, & then either wire in a resistor, to lower the voltage, or wire in something to increase the voltage..therefore it would eliminate the need for people to worry about wich FW to buy.

Also if someone could...please post which FW's are needed in which car (i know there was a thread before but i cant find it.)

b13 =
b14 =
S13 =
S14 =
p10 =
p11 =

now this may seem like a stupid endeavor, but i swear it is not....the problem i am having is, my light is on, & my PA inspection is up, & in PA if ur light is on, that equals a automatic fail.

So please please please!!!! try to help best you can.

enohand · 03-04-2009, 06:13 PM

wow...23 views no reply's?

tsuruser · 03-05-2009, 12:41 AM

What i can recomend being that i do PA inspections is if you have a cheap obII scanner clear the code and if the light does not come back on then drive it for about a hour (on the highway)and then check the readyness monitors to see witch ones set complete or ready .If all but 2 are complete the car will pass PA inspection . 96-2000 cars are allowed 2 monitors to be not ready. 2000 and up are allowed only 1 not ready monitors to pass inspection . But all this is only good if the light stays off !! good luck

Nitelife · 03-05-2009, 09:38 AM

See the posts below for accurate information.

enohand · 03-05-2009, 12:49 PM

yeah...i just heard back from JGY & thier still claiming that thier flywheels DONT throw a CEL,,,,,,,so now i need proof that the 2 different flywheels are used for different cars......anyone know off hand hoew many teeth are on the STOCK 96 g20 flywheel? im guessing 109, & the JGY one has 108

enohand · 03-05-2009, 10:32 PM

bumpp...

ok how about this...would i be able to cut the wires going to the sensor, then take the wires from it, & splice it into the cam sensor?

enohand · 06-18-2010, 04:48 PM

still no way around the FW CEL huh?

Sr20&K20 · 09-10-2010, 01:17 AM

OBDI is 109 only & 108 is OBDI,OBDII compatible

UI8281 · 09-10-2010, 07:14 AM

Just putting it out there... how long after the install of the flywheel did the ECU give you the error code? Have you checked the Sensor and wires themselves to rule out damage done while the flywheel was installed?

viprdude · 09-24-2010, 02:46 AM

Like said before, you cant trick it. JGY is full of crap.

108 teeth or bust.

OBD II vehicles need 108 teeth.

OBD I vehicles can use 108 or 109 tooth flywheels.

Nitelife · 09-24-2010, 10:06 AM

Quote:

Originally Posted by Sr20&K20

OBDI is 109 only & 108 is OBDI,OBDII compatible

Quote:

Originally Posted by viprdude

Like said before, you cant trick it. JGY is full of crap.

108 teeth or bust.

OBD II vehicles need 108 teeth.

OBD I vehicles can use 108 or 109 tooth flywheels.

Where are you guys getting this information. I'm not saying you are wrong, it just there seems to be conflicting information and if my info is wrong I will edit my post to reflect this.

viprdude · 09-24-2010, 10:20 AM

JWT, haha, That is why they only make one model.

http://www.fidanza.com/ItemDetails.a...id=260&mkid=13

Wolf_SER · 10-01-2010, 03:59 AM

Quote:

Originally Posted by Nitelife

Everything I've ever read in the past has said the 109 is OBDII and 108 is OBDI (which can use the 109 as well).

Where are you guys getting this information. I'm not saying you are wrong, it just there seems to be conflicting information and if my info is wrong I will edit my post to reflect this.

Per OWN EXPERIENCE I can tell they are correct and that everything you have heard in the past is wrong

As Viprdude said:

108 teeth or bust.

OBD II vehicles need 108 teeth.

OBD I vehicles can use 108 or 109 tooth flywheels.

I have a 98 model and first I got a 109 (did not know this difference) flywheel and after a few starts you get the CEL and you can't get rid of it UNTIL you change your flywheel to the correct 108 model.

As soon as I did, that problem dissaperared.

What happens when you drive it with the CEL on? NOTHING but is a pain in the butt to have the CEL on all the time

Nitelife · 10-01-2010, 10:51 AM

Quote:

Originally Posted by viprdude

JWT, haha, That is why they only make one model.

http://www.fidanza.com/ItemDetails.a...id=260&mkid=13

Quote:

Originally Posted by Wolf_SER

Per OWN EXPERIENCE I can tell they are correct and that everything you have heard in the past is wrong

As Viprdude said:

108 teeth or bust.

OBD II vehicles need 108 teeth.

OBD I vehicles can use 108 or 109 tooth flywheels.

I have a 98 model and first I got a 109 (did not know this difference) flywheel and after a few starts you get the CEL and you can't get rid of it UNTIL you change your flywheel to the correct 108 model.

As soon as I did, that problem dissaperared.

What happens when you drive it with the CEL on? NOTHING but is a pain in the butt to have the CEL on all the time

Good information. I learned something new today. Unfortunately it's a 50/50 split on what is what when you do a search. I will be erasing my post above to prevent further confusion if someone reads this in the future.

dfddfd2 · 10-01-2010, 12:54 PM

What code(s) are in the ECU?

evilsr20degg · 10-03-2010, 05:21 AM

Quote:

Originally Posted by Wolf_SER

What happens when you drive it with the CEL on? NOTHING but is a pain in the butt to have the CEL on all the time

take the light bulb out