88 with 351w c6 shuts down

[emtjloghry]

I HAVE A 88 351W WITH C6 TRANS WHILE DRIVING OR IDLING AFTER AWILE IT WILL SHUT DOWN AFTER 60 SEC OR SO IT WILL CRANK RIGHT BACK UP LIKE IT NEVER HAPPENED I HAVE ALREADY REPLACED THE FUEL FILTER AND RECENTLY HAS HAD NEW PLUGS WIRES AND DIS CAP AFTER I REPLACED FUEL FILTER I ADD ONE CAN OF SEA FOAM AND IT STOPPED BUT WITH NEW TANK OF MID GRADE GAS ITS HAS BEGUN AGAIN ANY HELP WOULD BE GREAT

 

[Rons beast]

Hey Emti,

Welcome to the Zone.

Your symptoms are classic of ignition module heat failure.

Before you just go and replace it, check as to why the Bronc won't start. No spark?...or...No fuel?

No spark = the ign. module in most cases. If It's no fuel, more diagnosis is needed. No fuel= I have found the fuel pump relay, inertia switch, or fuel pump, and even percolation in the fuel line from heat from an exhaust leak.

Good Luck

 

[emtjloghry]

thank ya ill give it a look but i dont know if its a fuel issure because it does not starve before it dies it just shuts stright down with no warning

 

[B-Co Kid]

I have an 87 B-Co, and experienced similar problems. After driving for a while the engine would just die. Turns out it was my ignition coil. If your coil is the original coil, especially if its a canister coil, I would suggest replacing it ASAP. If it is a canister coil, MSD makes a canister coil that works with the factory "horseshoe" connector. I first replaced the old coil with a replacement part from autozone, and my B-Co stopped dying abruptly. After that I replaced with the MSD coil and saw a much better improvement.