LT1 coil failure causes? Look for?
Thread Starter
Pro
Joined: Mar 2011
Posts: 701
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From: 40 miles N. of the Everglades
LT1 coil failure causes? Look for?
I'm under the impression that these failures are unusual particularly on a low mile car? in the hours diagnosing no start/no codes I checked opti/ICM values. My multi-meter doesn't measure resistance on these coils, and most no start posts here state coil/ICM changed with no result so I was shocked when the new coil started it up.
Just another day with a 22 yr old car?
Just another day with a 22 yr old car?
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
I'm under the impression that these failures are unusual particularly on a low mile car? in the hours diagnosing no start/no codes I checked opti/ICM values. My multi-meter doesn't measure resistance on these coils, and most no start posts here state coil/ICM changed with no result so I was shocked when the new coil started it up.
Just another day with a 22 yr old car?
Just another day with a 22 yr old car?
Thread Starter
Pro
Joined: Mar 2011
Posts: 701
Likes: 79
From: 40 miles N. of the Everglades
I'm running some older HEI cars and have never replaced a coil on those, my local parts guy who runs a couple LT1's in various states of tune was surprised also. Wires look perfect, runs flawlessly up to red line. My Harbor Freight digital multimeter won't give me a resistance reading on either the old/new coil and gives me low values on the wires. Recommendations on a better meter?
Seems like low resistance spark plug wires wouldn't stress the coil? I do so love changing LT1 wires. I'm going to the Venice Florida Corvettes Show in March which is beyond the 100 mile AAA tow distance....
