Joined: Nov 2018

Posts: 5

Hello,
I have an LT1 with a manual transmission.
I was driving my car down the highway and heard a loud pop followed by complete power loss. When I took it out of gear my RPMs plummeted and my engine died. It cranks, but will not start. Would anyone have any insight as to what might have happened?
Thanks,
D

Joined: Nov 1998

Posts: 71,086

From: Hell was full so they sent me to NJ

Have you scanned it for codes? Have you checked the fuel pressure?

Joined: Nov 2018

Posts: 5

It’s not throwing any codes and my fuel pump is cycling when I turn the ignition on.

Joined: Dec 1969

Posts: 27,725

From: Little Rock, AR

Joined: Nov 2018

Posts: 5

Thanks for the help guys.
D

Joined: Nov 1998

Posts: 71,086

From: Hell was full so they sent me to NJ

Did you have spark?

The fact the fuel pump primes when you turn the key does not guarantee you have adequate fuel pressure.

What did you use to scan it for codes?

Joined: Mar 2016

Posts: 212

From: Kentucky

Joined: Nov 2018

Posts: 5

The rotor completely melted, the sensor was still working after having molten pieces of plastic bouncing around down there.

Joined: Nov 2018

Posts: 5

New (msd) distributor is on. Cars back on the road. Thanks again for the help guys.
D

Joined: Nov 1998

Posts: 71,086

From: Hell was full so they sent me to NJ

Hopefully MSD has solved their latest round of Opti problems. Generally not recommended. Watch for sudden surging at idle, up to as high as 2,500 RPM, due to RFI interference from the cap to the optical module. It was a major problem earlier this tear, on units manufactured over a 2 year period. They only figured it out after I sent them PCM data logs showing the cause-and-effect relationship between the spurious RPM signals from the Opti and the reaction to them with the PCM continuously bumping up the IAC counts.

Good luck.