Thank you, i'll try that.

 

Where are you located? I have a friend here in the Pittsburgh area that has a 95 D1. He was redoing the intake in another friends barn. He started the work without having everything on hand to do it all at that time. A buddy of his that supposed knew a lot about Discoveries was "helping" him.

They got started on the disassembly, got it all apart, struggled with it for a couple of weeks then got it back together. During the disassembly they had purposely cut two wires that they for whatever reason thought cutting them was easier than disconnecting them. One black, one red. On reassembly, late in a poorly lit barn, his buddy crossed these two wires on reassembly.

For the next two years, they though the problem was the "spider". After much frustration, repeated replacements of various things, rats chewed up a lot of stuff, kids broke in the barn and vandalized his interior and stole his radio. He was still trying to figure it out when he found the crossed up pair of wires. After correcting the wiring problem and putting in a new baterry, it fired right up.

 

those are good details... to share. Did a dealer quote you $1800 for that fix? Which one? I ask 'cause that seems high

You say the fuel, spark and auch (air?) are ok.... BUT the immobilizer on a V8 cuts the circuits for fuel pump relay, ignition and starting. Sooo, that makes me think something else is up. All fuses have been checked?

It is a BIG job if you truly do have to replace it from behind the dash.

Are you prepared to take it all apart yourself and repair it? Somewhere around here I think I have a file with a wiring fix for the unit itself.

 

And just what do you mean by a wiring fix for the unit?

 

Am located in Neosho, MO.

 

You will find wiring diagrams in those RAVE files. Download that first... or a local Rover mechanic might charge less than the dealership.

I'm not entirely sure those "spiders" are available anymore. The PCB inside the spider housing is just like any other ECM in these trucks, just ask anyone whos rear windows don't or didn't work.

Check out the scope of this job as described in RAVE then decide if you will do it yourself.

 

It is a damn shame that their soldering was so poor on these circuit boards. Somebody should get enthusiastic and come up with an update to replace/simplify all these old electronics that can plague all of us Discovery Owners.

 

Do NAS discos even have a spider?

If you look up the bypass part number at rovers north, it shows for 300tdi, and if I search for "spider" in the ETM it only finds it on pages that say "except NAS"