replaced tach, still doing same thing

[azmusclecar]

Searched internet and only found a few coils with the WHITE WIRE........WILL this really make a difference?

1979 OLDSMOBILE CUTLASS CALAIS Taylor Replacement HEI High Output Coils 718225

 

[azmusclecar]

Depends on the VR sensor in the base of the distributor....

Okay, sorry to ask but WHAT is the VR sensor? If you don't ask, you won't know

 

[azmusclecar]

By the way I do NOT have any hard starting issues or backfiring as described in the notes above regarding the difference in the
yellow wire versus white wire coil swap.

Thought I'd better mention that, since it goes against what the article says CAN be an issue.

 

[azmusclecar]

I wanted to try to revive my thread JUST to see if ANYONE has changed out the coil from yellow wire to white and had the tach work properly?

I have boxes of parts purchased over the years to FIX a problem only to find they didn't. To throw $50 at a coil is not bad, but $50 is $50.

I can always use it to buy more cat food..............and neighbors know I don't own a cat. So judgemental.

 

[fleming442]

It is interesting. If the coil makes that much difference, how do you explain aftermarket offferings by Davis, Hypertech, Accell, MSD, etc....

 

[pagrunt]

If the coil makes that much difference, how do you explain aftermarket offferings by Davis, Hypertech, Accell, MSD, etc....

Accell still list two HEI coils dependig on GM application.
Accell white wire HEI coil

ACCEL 140005 ACCEL Ignition Coil - SuperCoil - HEI in Cap - 1973-1997 - Red and White Primary Wire

Engineered for higher energy output resulting in quicker starting, improved idle quality, crisper throttle response and more high RPM power. Compatible with both original HEI ignition systems and later model computer controlled HEI systems. No need to remove or re-time distributor. Complete with...

www.holley.com

Accell yellow wire HEI coil

ACCEL 140003 ACCEL Ignition Coil - SuperCoil - HEI in-cap 1973-1991 - Red/Yellow primary wire

Engineered for higher energy output resulting in quicker starting, improved idle quality, crisper throttle response and more high RPM power. Compatible with both original HEI ignition systems and later model computer controlled HEI systems. No need to remove or re-time distributor. Complete with...

www.holley.com

 

[azmusclecar]

It is interesting. If the coil makes that much difference, how do you explain aftermarket offferings by Davis, Hypertech, Accell, MSD, etc....

Now THAT is what I was thinking...........but who am I?

 

[azmusclecar]

Accell still list two HEI coils dependig on GM application.
Accell white wire HEI coil

ACCEL 140005 ACCEL Ignition Coil - SuperCoil - HEI in Cap - 1973-1997 - Red and White Primary Wire

Engineered for higher energy output resulting in quicker starting, improved idle quality, crisper throttle response and more high RPM power. Compatible with both original HEI ignition systems and later model computer controlled HEI systems. No need to remove or re-time distributor. Complete with...

www.holley.com

Accell yellow wire HEI coil

ACCEL 140003 ACCEL Ignition Coil - SuperCoil - HEI in-cap 1973-1991 - Red/Yellow primary wire

Engineered for higher energy output resulting in quicker starting, improved idle quality, crisper throttle response and more high RPM power. Compatible with both original HEI ignition systems and later model computer controlled HEI systems. No need to remove or re-time distributor. Complete with...

www.holley.com

Thanks for the posts........I'll try to see if I can determine what the difference is.........

 

[fleming442]

Go back and read the article posted about how the coils match the VR sensors. You'll be chasing your tail if you don't know what you're looking for. Pull the cap, coil, and rotor, then see which sensor you have in the bottom. THAT is what determines which coil you should have.

 

[azmusclecar]

Go back and read the article posted about how the coils match the VR sensors. You'll be chasing your tail if you don't know what you're looking for. Pull the cap, coil, and rotor, then see which sensor you have in the bottom. THAT is what determines which coil you should have.

Will do........I googled VR sensor and now I understand what you meant. I just haven't had time to get back to the car. Thank you.