2.5 turbo 87 labaron won't start

Having trouble get 87 2.5 turbo to start. The computer is new, the
distributor is new, coil is new. Have fuel pressure but do not have any
spark. No codes show up. It ran fine then just died one day. The timing
belt looks ok. I an unable to get any spark at all and when you check
positive side of the coil, it is dead. I have checked all vaccum lines and
plugs.

I am at a loss where else to look.
Thanks for any input.

Mike

 

As in, no +12V to the coil? If so, that should be a big clue to the
problem. Trace the +12V and find out where it stops (do you have a
vehicle electrical schematic?).

Bill Putney
(to reply by e-mail, replace the last letter of the alphabet in my
address with "x")

 

Checking the positive side of the coil is not as simple on this car as it
used to be before engine control computers came along. You can't just turn
the ignition switch to "On", put a voltmeter to the positive primary coil
wire and expect to find +12V.

If you have no spark, it's probably because the computer isn't turning on
the Auto Shutdown relay, and it's probably not doing that because it
probably doesn't see a distributor signal, and it probably doesn't see
that because the hall effect pickup in the distributor is probably dead.

To check, disconnect the battery (either remove the negative cable
terminal or pull apart the plastic disconnect in the positive cable) for
about 2 minutes. Reconnect, attempt to start the engine, and check the
codes. If you see a code 11, put in a hall effect pickup assembly.

DS

 

I put a new hall effect sender in it when I put in the new distributer. The
only difference was the old unit had 2 wires coming from it and the new one
has only one.

 

They sold you the wrong Hall Effect sensor.

Turbo engined vehicles have to have the dual Hall sensor, no
way in hell it will run with the single distributor pick up.

When you order parts, you need to make it perfectly clear
that your engine is a turbo otherwise you'll wind up getting
the wrong parts like the Hall Effect sensor, MAP sensors,
etc.

 

And when was that? Before or after it first wouldn't start?

DS

 

Ah. Well, then. You're missing a wire. More specifically, you've got the
wrong pickup assembly.

DS