350 Timing Troubles/Questions

[Dead Parrot]

My non-expert guess is the computer is in "limp home mode". Basically a very tame setting that will start and run but little else.

I can't see that a TBI and ECM change the laws of engine physics that say a 350 wants a lot more advance then 0 or 4*.

Did all of the O2 and other sensors get moved? One or more missing signals might cause the computer to assume something is busted.

[5Tractorguy]

Originally Posted by Dead Parrot

My non-expert guess is the computer is in "limp home mode". Basically a very tame setting that will start and run but little else.

I can't see that a TBI and ECM change the laws of engine physics that say a 350 wants a lot more advance then 0 or 4*.

Did all of the O2 and other sensors get moved? One or more missing signals might cause the computer to assume something is busted.

Never gave much thought to limp mode... good idea. Would make sense with how it's running.

Moved as in re-located on the engine or just checked? Everything is still in its place and all the sensors/modules have been changed within the past 3+/-years. I suppose I should start checking sensors and make sure they're all putting out something.

Aside from the large firewall plug and the plugs that go directly into the ECM, is there any more in between that are crucial? Maybe there's a bad connection along the way someplace?

[lobuck64]

Been a while since I have set timing on a tbi I think there's a tan wire you have to unplug it may have a black or white tracer its on right side (pass side) around engine harness just a thought worth checking