89 tbi no spark all the sudden

[D13]

No spark on TBI is usually module or wiring. You need to verify the module is getting proper voltage and that the wiggling the distributor wires does not cause an issue. If it were an original distributor I would say look at the pick up coil to module wiring also.
Plug wires with high resistance can cause module failure. Also aftermarket modules do not have the feedback protection in Delco modules, if the problem happens again ohm check the plug and coil wires and check for a broken / cracked spark plug.

[chris989]

Originally Posted by D13

No spark on TBI is usually module or wiring. You need to verify the module is getting proper voltage and that the wiggling the distributor wires does not cause an issue. If it were an original distributor I would say look at the pick up coil to module wiring also.
Plug wires with high resistance can cause module failure. Also aftermarket modules do not have the feedback protection in Delco modules, if the problem happens again ohm check the plug and coil wires and check for a broken / cracked spark plug.

thanks for the reply,

I should have the new distributor by the end of the day. Everything is new, I have taylor 8mm wires, and the summit billet dist, (mallory or msd i read).

Summit did not have a part number to replace the module, which concerns me in the future, so they sent an entire new one.

I will update tonight if i can get it installed.

Are these modules that sensitive? the old dist have 300k+ mile on it. This new one 5000K

[chris989]

SOLVED,


swapped in new module and fired right up. Not sure if it was an odd failure or if the summit brand dist id problematic.

https://www.summitracing.com/parts/s...v2500-suburban

i guess i will keep a spare module and phillips under the seat just in case.