5.0 motor EFI

[grumpyjc]

I put a 5.0 EFI motor in my 47 ford. the last time it ran was about a month ago. I disconnected the battery at the upholstery shop, and I reconnected the battery and started the engine it when full throttle. WHY? need help please

[craig]

since it has a mechanical throttle valve, it couldn't actually go "full throttle" unless it was manually opened. The electronic air control solenoid will kick up the idle, but would be incapable of a complete "full throttle"

[grumpyjc]

I hear what you are saying.....the throttle body valve was closed and the engine reved to about 5K RPM

[paul2748]

The computer probably has to reset itself. Sometimes you have to take it on the road for this to happen.

[JeffB2]

Try this article:http://www.muscularmustangs.com/idlereset.php

[grumpyjc]

Sponsored Links (Register now to hide all advertisements)

I just changed the TPS and no change in the RPMs. I don't want to drive the car with this condition. Any more advice?

[Ford blue blood]

Is the EFI speed density or MAF? How long does it stay at the elevated RPMs? Start it, let it run for a few seconds (10 - 15), shut off, restart. Both systems have a "cold start" mode and need a moment to settle in. My speed density system would bring the engine up to around 2500 - 2800 after the battery was disconnected and took a couple of restarts to get it to settle in to a proper idle. After the computer "learned" all of it's parameters it still fired up to 2500 then immediatly settled into a normal idle.