I have an 86 240 Wagon that is not running. Here is what I have found out through troubleshooting. The Fuel pump is not running when turning key to on position or run position. There is no spark when turning key to start position. There is voltage on coil 12 volts both high and low side when ignition is on. I pulled off the hall sensor connector from the distributor and checked to see if there was voltage on middle pin. I noticed that whenever I grounded the pin, the fuel pump came on for a couple of seconds. I am assuming the wiring is good, I am working alone so it is hard to check by myself. I also noticed that according to the FAQ's the tach should bounce ever so slightly when turning over the engine, mine does not! I took apart the Power stage Amp and cleaned the connectors, no difference. Suggestions? Thoughts?

Thanks

Gavin

Update,
I bought a used distributor and ECU. I was strongly leaning towards the dist. but thought it was cheap insurance to have the ecu in case it turned out the distributor was fine. I swapped out the old distributor, what a pain to get out I used a small pry bar to wedge it out otherwise I would not have been able to remove it. I buttered the old one and seat with grease and slid it right in. The car started right up. So it must have been a bad hall sensor. Thanks for all the help. Great board!

Fuel Pump Relay,25 amp fuse?

Even if the 25a blade fuse looks good, check its holder for corrosion.

Hello,

Have you checked the rubber bank (AKA the timing belt)? No turn of the belt no pulses, no pulse, no relay close and no fuel.

You can pull off the cover if solo, or have someone crank the key if you have an extra set hands and look at the the valves with the cap off. They move and you still have a rubber band, and if they don't it be busted most likely.

Regards,

Paul

But even if there are no ignition pulses (due to broken belt or whatever reason), shouldn't he at least get the 1-2 sec pump prime when he first turns on the ignition? He's not even getting that.

It almost sounds as though there's a problem in the ignition switch itself.

Hello

The prime thing is true (after 88 I think), but he has an 86 model and they do not prime. An 86 just sits there and waits for pulses to turn on the pump. If you dangle it down and start cranking you can hear it click shut if you lean that way. But you need pulses to close the relay and send power to the pump and the AMM on a 85-87 model. Been tempted to hook the relay up to switched power a couple of times but fought it off.

Wished they did prime, like hearing that quick humm. But alas you get nothin.

Regards,

Paul

Interesting. Thanks for the education.

It's odd they were designed that way - even the old d-jets prime at ignition turn-on.

Would the distributor rotor turn if belt is broken? Might be easier to take off cap and check to see if rotor is turning? I did not check to see if belt was broken but will definitely do so in morning.

Well, the belt is in tack and NOT broken. I think I have it isolated down to either the Fuel Injection ECU or the distributor. I am leaning towards the dist because of the following readings. My dist has 3 wires coming out. I took off the plastic connector and measured on the wire side leading to the firewall with the ignition in on position the three lines on the far one I have 12 volts the middle I have 5 volts and the far on I have 5.4 ohms. This checks out right? If this is what it should be the only thing left is the Hall sensor, ie dist. I did read somewhere that if the RPM gauge does not bounce when turning over the car then it's a strong possibility it's the Hall sensor. I can pick up a used distributor and ECU on Evilbay for fairly cheap. I am leaning towards the dist, but maybe I should buy both. Am I missing anything. I have checked all Fuses took the out lubricated with Die-electric grease, tested continuity and looked over the wiring. Everything looks good in this department.

Thanks for your input and help, I hate to be down a car, especially this old reliable girl....

If the belt is broken, you are correct, the rotor wont move.

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