1969 TI Ignition Problems
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
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1969 TI Ignition Problems
Jumper cables were installed backwards and smoked something. Smoke came up near back of engine. Checked distributor and didn't see evidence of burnout but couldn't tell for sure where the smoke came from. Coil inside distributor has resistance across leads. Starter will turn over but engine will not start. Could it be the starter solenoid? Will it turn starter but not work properly for other wiring connections to the transistor module assembly? I'm hoping i didn't fry the TI module and coil.
Race Director
Joined: May 2006
Posts: 18,731
Likes: 2,582
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
Start by checking your fusible links. There are several. Smoke at the back of the engine could have come from fusible links down by starter.
Coil voltage is controlled by a resistor wire yellow/white cloth wrapped wire to + side of coil.
Look for the basics first make sure you have voltage at all the proper places first and no blown fuses.
I don't have TI but I beleieve that it is powered off the fuse panel via a add on lead ( similar to the way power windows are added at the factory) check that fuse in the fuse panel IGN. That lead will be plugged into one of those taps.
Coil voltage is controlled by a resistor wire yellow/white cloth wrapped wire to + side of coil.
Look for the basics first make sure you have voltage at all the proper places first and no blown fuses.
I don't have TI but I beleieve that it is powered off the fuse panel via a add on lead ( similar to the way power windows are added at the factory) check that fuse in the fuse panel IGN. That lead will be plugged into one of those taps.
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
Likes: 0
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
Likes: 0
Start by checking your fusible links. There are several. Smoke at the back of the engine could have come from fusible links down by starter.
Coil voltage is controlled by a resistor wire yellow/white cloth wrapped wire to + side of coil.
Look for the basics first make sure you have voltage at all the proper places first and no blown fuses.
I don't have TI but I beleieve that it is powered off the fuse panel via a add on lead ( similar to the way power windows are added at the factory) check that fuse in the fuse panel IGN. That lead will be plugged into one of those taps.
Coil voltage is controlled by a resistor wire yellow/white cloth wrapped wire to + side of coil.
Look for the basics first make sure you have voltage at all the proper places first and no blown fuses.
I don't have TI but I beleieve that it is powered off the fuse panel via a add on lead ( similar to the way power windows are added at the factory) check that fuse in the fuse panel IGN. That lead will be plugged into one of those taps.
I'll look for the links.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Start by checking your fusible links. There are several. Smoke at the back of the engine could have come from fusible links down by starter.
Coil voltage is controlled by a resistor wire yellow/white cloth wrapped wire to + side of coil.
Look for the basics first make sure you have voltage at all the proper places first and no blown fuses.
I don't have TI but I beleieve that it is powered off the fuse panel via a add on lead ( similar to the way power windows are added at the factory) check that fuse in the fuse panel IGN. That lead will be plugged into one of those taps.
Coil voltage is controlled by a resistor wire yellow/white cloth wrapped wire to + side of coil.
Look for the basics first make sure you have voltage at all the proper places first and no blown fuses.
I don't have TI but I beleieve that it is powered off the fuse panel via a add on lead ( similar to the way power windows are added at the factory) check that fuse in the fuse panel IGN. That lead will be plugged into one of those taps.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I should have a copy of the troubleshooting guide at my office, I'll look tomorrow and see if I can find, scan and put it up on the web site.
My guess... you cooked the amplifier... it is the weak link in the circuit but don't buy anything until you test.
http://willcoxcorvette.com/product_i...oducts_id=4560
My guess... you cooked the amplifier... it is the weak link in the circuit but don't buy anything until you test.
http://willcoxcorvette.com/product_i...oducts_id=4560
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
Likes: 0
TI system gets its full 12VDC power off the pink wire on the steering column ignition switch, if your starter cranks you probably have power to TI Amplifier. This system is not fun to troubleshoot, I have a spare amplifier board as a " carry on spare " on any K-66 TI car that I travel with. There are upgraded TI amplifier poards being made, try Wilcox Corvette. You should have a GM service manual and a VOM meter to troubleshoot the K-66 system. I can easily envision a amplifier failure if you tried to crank the Vette over with the battery polarity reversed. TI specialties has a decent section on troubleshooting the K-66 system the GM manual is the best source.
Thanks
Tom
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Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
Likes: 0
I should have a copy of the troubleshooting guide at my office, I'll look tomorrow and see if I can find, scan and put it up on the web site.
My guess... you cooked the amplifier... it is the weak link in the circuit but don't buy anything until you test.
http://willcoxcorvette.com/product_i...oducts_id=4560
My guess... you cooked the amplifier... it is the weak link in the circuit but don't buy anything until you test.
http://willcoxcorvette.com/product_i...oducts_id=4560
Melting Slicks
Joined: Oct 2001
Posts: 2,065
Likes: 1,395
From: Halifax, Nova Scotia, Canada
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Here is the 69 Factory TI ignition section from the Service Manual.
Willcox
http://willcoxcorvette.com/repairand...lp.php?hID=341
Willcox
http://willcoxcorvette.com/repairand...lp.php?hID=341
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
Likes: 0
Here is the 69 Factory TI ignition section from the Service Manual.
Willcox
http://willcoxcorvette.com/repairand...lp.php?hID=341
Willcox
http://willcoxcorvette.com/repairand...lp.php?hID=341
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 35
Likes: 0
I removed the amp and took the cover off but frankly the electrical testing is a little over my head. I'm thinking about just buying a new circuit board along with a new wiring harness and magnetic pickup assembly pole piece for the distributor. Can I get a quote from you on these parts?
Also i would like to know if i can just pull the distributor as is without rotating the engine to TDC as long as i mark the locations well before removal?
Also i would like to know if i can just pull the distributor as is without rotating the engine to TDC as long as i mark the locations well before removal?
Race Director
Joined: Aug 1999
Posts: 18,126
Likes: 174
From: WI
It`s not cheap but if you or anyone else reading this is interested I have a genuine GM NOS (not the Chinese crapola sold these days) magnetic pickup pole piece in a sealed pull string box available, if you want to save some money I also have a repop center spool for the magnet available...my ti collection below.
Last edited by redvetracr; Dec 7, 2014 at 06:14 PM.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I removed the amp and took the cover off but frankly the electrical testing is a little over my head. I'm thinking about just buying a new circuit board along with a new wiring harness and magnetic pickup assembly pole piece for the distributor. Can I get a quote from you on these parts?
Also i would like to know if i can just pull the distributor as is without rotating the engine to TDC as long as i mark the locations well before removal?
Also i would like to know if i can just pull the distributor as is without rotating the engine to TDC as long as i mark the locations well before removal?
If interested, email me at support@willcoxcorvette.com Willcox