98 100 won't start. Immobiliser issue

[BOB F]

I posted this in an old thread that seemed similar but no replies so I thought I would start it in a new thread hoping someone knows something about this.

The no start issue began last week. I have three keys. LOng/short version of the story. Thought it was a fuel pump, etc., but then was pointed towards the immobiliser.

Sure enough the immobliser keeps flashing with all three keys. I bought and installed a replacement antenna amplifier behind the key and no good. The antenna in the key ring housing tests out as having continuity.

I don't know where to go from here.

Any ideas?

Thank you

 

[ToHiHy]

Are you able to retrieve any codes? That can lead you in a better direction than replacing parts that may not be the problem. Was a key recently added to the mix?

 

[BOB F]

See my other post in the other thread. It was the 20a efi fuse. The fuse was fine but it is making some sort of intermittent contact. Replacing it worked so far but the legs of the fuse were black with corrosion.

Thank you for the reply