1976 fuel injection

lesinfamous · #1 (**permalink**) 05-06-08, 03:53 PM

anyone prefer a stock fuel injection system from a 1976 fleetwood over the stock carb? why or why not? is the EFI system even reliable??

kevm14 · #2 (**permalink**) 05-06-08, 04:01 PM

From my research on the first gen Sevilles, I think the biggest problem was the failure of the MAP sensor or vacuum line for the MAP sensor. The MAP sensor on the ECU was actually built into the ECU and a vacuum line ran right into the box. Honestly, I'm not sure what kind of problem you'd have that ECU replacement/repair wouldn't cure. These days, injectors and throttle position sensors aren't exactly "hard" to figure out. I believe the TPS on those cars was not like the infinitely variable potentiometer that modern EFI (or even 80s digital EFI) used. It was more like discrete steps. Still, I don't see why it would be hard at all to get one going and I think the EFI was definitely better than the carb. It ALL depends on how old you are, though. I was born in 1981 so by the time I figured out cars, EFI was everywhere.

lesinfamous · #3 (**permalink**) 05-06-08, 06:30 PM

I understand, but if i upgrade parts on the engine, wouldn't that mean that id also have to upgrade some parts in the fuel injection system as well? Also, is the fuel injection system from 76 fleetwoods exactly the same as the ones found in first gen Sevilles??

kevm14 · #4 (**permalink**) 05-06-08, 06:44 PM

I believe it was the same system, with a different calibration.
The 1st gen Seville came out in 1975 as a 1976 model and ran to 1979. EFI was standard, not optional.

As for modifications, you are going to be out of luck there. Your best bet is to just convert the system to one of the more modern ECMs. That would be a great project, and I am sure it has been done before. Then you'd have access to all the modern tuning tools available. If you just want to drive the car, then forget it. But for tinkering...