- Joined
- Jun 2, 2012
- Messages
- 25,363
- Reaction score
- 8,373
- Points
- 113
- Location
- canada
- Vehicle Year
- 1994
- Make / Model
- Ford
- Transmission
- Manual
Yes, you can unplug the 3 wire connector on alternator and run the engine, but only run it for 10-15min if you have a good battery, you are running the whole vehicle off the battery so lights OFF and fan OFF or low
If stumble happened before engine was warmed up then its not the TFI, their biggest issue was running hot and failing
See if its related to gas pedal position, i.e. TPS position, if stumble felt like "you took your foot off gas pedal" then maybe that is what the computer "thought you did"
TPS gets 5volt
Sends back 1v to 4.5v
1v being foot off the gas pedal
4.5v being foot to the floor
IF(big if) a dead spot in TPS caused volts to drop suddenly...............foot off the pedal as far as computer is concerned
If stumble happened before engine was warmed up then its not the TFI, their biggest issue was running hot and failing
See if its related to gas pedal position, i.e. TPS position, if stumble felt like "you took your foot off gas pedal" then maybe that is what the computer "thought you did"
TPS gets 5volt
Sends back 1v to 4.5v
1v being foot off the gas pedal
4.5v being foot to the floor
IF(big if) a dead spot in TPS caused volts to drop suddenly...............foot off the pedal as far as computer is concerned