no start 5M

[Obnoxio]

Hi. I have been helping a friend do a swap in his 85 Cressida over a period of a month or so. He took stuff apart while I was not present, and Im having a hard time getting it running. there are three connectors he does not recall where they came off. One is a small white plug that looks exactly like the A/C plug, but I cant find a mate for it anywhere. The second are two sets of brown wires on the intake manifold side. One is lighter colored than the other, but both have black stripes. Im getting no fire from the coil, but the engine turns over okay. Any help would be appreciated.
-Toddb

[Dean]

Need more info to help you on the first connector.
It looks like which A/C plug that is located where and connected to what?
Do you mean the single wire plug that connects to the A/C compressor clutch? If so, the identical plug next to it is for the ECT (electronically controlled transmission) and is a diagnostic connector. Nothing should be connected to it.

On the brown wires....
This is probably the most commonly missed thing when doing engine swaps. Those brown wires are supposed to ground under the intake chamber. They get grounded by putting the ring connectors on the ends under one of the bolts that holds the intake plenum to the intake runners.
If these are not hooked up, the injectors won't work, so the engine won't start. Kind of hard to see them under there and hard to connect without removing the intake plenum. Use a mirror or do it all blind/by feel. Hope you have small hands too!

Hope that helps you out.

[Obnoxio]

Thanks a bunch, thats just what I needed to know. I have them connected to the bolts on the air-pump next to the throttle body. Would this be why I am getting no sprak from the coil?
The plug I am referring to looks identical to the plug that goes onto the A/C compressor. I just cant find where the thing lives at.
Thanks again for your reply.
-Toddb

[smileyman]

is it in the glove box by the ecu because if it is then it dosenet connect to anything and if it is not i will go out and look at my car and try to fin it for you and i mught also take a picture of the two ground wires you are talking about :) i just did a swap and i want to help :)

[KesekiSupra]

im having the same problem on my newly acquired 85 6m. it cranks over fine, but it doesnt spark. the coil sparks and all. but the spark plug wires dont. im thinking a wire sumwhere came loose, but i cannot find the problem. im wondering if theres sumthing on the distributor that could be bad as far as wiring? cuz i put a working cap and rotor on it, and still it wouldnt spark.

[smileyman]

ok what im about to xplain is in the tsrm. Take and put the engine to tdc on the exhaust side. E on the timing gear. Make sure the little marks are lined up the way they are supposed to be. Now open your oil fill cap and look in and you should be able to see a whole in the camshaft throught the oil cap whole thingy if you do it right you will know what i am talking about. Now take your distributor cap off and look to see that it is pointing at the number 1 plug wire if it is the ok the distributor timing is right . If it is right and it still dosenet fire or spark then take the cap completely off and look at the rotor itself and the little metal thingies in the cap if those are really worn either of them then you need a new distributor. i would replace it and if that dosenet work then i dont know what to tell ya. but check the distributor that could very well be your problem.

[KesekiSupra]

im having the same problem on my newly acquired 85 6m. it cranks over fine, but it doesnt spark. the coil sparks and all. but the spark plug wires dont. im thinking a wire sumwhere came loose, but i cannot find the problem. im wondering if theres sumthing on the distributor that could be bad as far as wiring? cuz i put a working cap and rotor on it, and still it wouldnt spark.

[smileyman]

ok oops i didnt read it thouroughly sorry
well im useless.

[smileyman]

well hmm okay now im confused. did you replace just the rotor or the whole bottom half assembly? i know you did the cap also but im talking about everything except the cap :)

[Obnoxio]

:o
Finally got the beast running. I had the plugs switched on the distributor and the amplifier for the EFI. Switched them over, re-attached the grounds, and it ran first try.
Thanks for the replies, they helped a bunch.
-Toddb