Ok.. Got home last night and tested the coil.. (Connected to the system)No Spark
Tested against battery with Jumpers.. GOT SPARK
So the coils good.

Also got to thinking about what Fasteddy said.(if there is no spark the injectors don't work eather) So Figured maybe this also works in reverse. So tested for a fuel problem..

NO power at fuelpump.. So I jumped it off a dome light to get the fuelpump working .. and the fuelpump works FINE..

So i then attempted to start it with the fuel pump jumped and running.. STILL no luck.

Then removed the ECU.. Tore it down . and put it under a magnified Desk Lamp for inspection.. Its real clean.. No broken or burn connections.

Ok so I'll break it down to things I know are good,

1)coil
2)fuelpump
3)all fuesable LINKS.. (removed all and replaced)both Main and Sub
4)Connections to fuel pump and ECU (but not ECU itself)

Things I know are broke

1)no power to the coil
2)no power to the fuelpump
3)the obvious..(Truck don't start)

As far as the 'Quote'(stupid box) ha.. Next to the coil. I'm wondering if I can do the same test against the coil jumping of the battery. Only this time going through that box as a starting point with the coil connected to it? Its T's back into the system between the box and the coil.. so i didn't want the juice to get back through the ciruit.

I'm guessing i'm gonna have to blow my lunch money on a used ECU. To At least rull out. But would really like to rule out everything else before I drop that kinda dough.

So any Idea's on a next Step on this one?

Again Thanks for all the feedback .


91 Montero 4x4. 3.0 Auto. 160,000 miles.

"I love my Truck, if the stupid lil box next to the coil says I can" <img src="/forums/images/graemlins/wink.gif" alt="" />