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Old 02-10-2009   #110
GregCrowe
 
Join Date: Sep 2004
Location: Oklahoma
Posts: 111
Default Re: 91 ZR-1 Cutting Out Under Load

Quote:
Originally Posted by gbrtng View Post
Greg:

Please describe "cutting out". Does the engine completely die and then recover when you lift from the accelerator pedal, bog down under full throttle and then recover, or miss heavily or slightly and then recover? I think you said earlier that power key selection does not matter. Please confirm - we're here to help, honest.
OK, in complete detail:

When the car is cold or even just warm and being driven for the 1st 15 minutes, no issues whatsoever, even with full throttle. After the car has been driven and has sat, heat synching the engine, the miss begins. Normal driving with light throttle, no issue. When a load is applied, the miss begins. The miss is very "electrical" feeling. It does not come and go under heavy fuel delivery situations. It's just a very quick electrical miss and shudder. The car never dies nor does it even come close to dying. Again, it's only under medium to heavy load. If you want to make it miss the absolute worst, let it heat synch and then bog it down in a high gear at low speed and floor the gas. Then the car will shudder and jerk. If you try to accelerate through the gears at full throttle, the car just plain misses like it has 2-3 bad plug wires arching.
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