Ok sports fans, I've been workin on my 420SEL for a while now. I've overhauled the intake manifold and vacuum lines, switches and gaskets. The check engine light is still on. I've got some really strange readings, like no current at the EHA, easy starting but stalling when cold. I've got a X92 or X11/4 diagnostic connector with a push button but no LED and connectors at Pins 1, 6 and 7.

The idle speed goes up and down which indicates a vacuum leak. I didn't replace the rubber CIS air horn base because it looked OK. When I unplug the idle air valve, idle speed goes way up.

Here are some pics:

X11/4 or X92 http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0026.jpg

Only pins 1, 6 and 7 http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0027.jpg

Pin 1 Brown wire or ground http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0028.jpg

Pin 6 pink and pin 7 green http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0029.jpg

Pushbutton wires http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0030.jpg

Builder's plate http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0039-1.jpg

Air horn gap http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0042-1.jpg (while running)

No duty cycle http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0037-1.jpg (KOEO)

I suspect the ecu is shot http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0035-1.jpg

The idle valve works, I made sure it worked OK and was clean http://i19.photobucket.com/albums/b177/wb300se/MB_420SEL/DSC_0031-1.jpg

There doesn't seem to be any voltage at either the CIS-E air flow pot despite it's position.

I think I need a similar 420SEL to use as a basis for testing.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.