I have a 86 gxl and it stop running one day. I saw that one of the leading spark plug wires was bad so i bought new wires still didnt start. So i barrow my friends leading coil pack and my car still doesnt start. So i check for spark and its not I get another leading coil pack and it still didnt spark. What would make the leading coil pack not get power to spark?

all of the coils read 1 ohms does that mean they are bad? the fsm says its suppose to be below 1 ohm.

 

Migiht be flooded?

 

Maybe.

But did you check the 15A eng fuse in the drivers side panel? Did you check the main fuse array?

BTW, just looking at them isn't good enough. They need to be tested with you multimeter.

 

whats a multimeter? I think i might have one. how do i check the fuses take them out and touch the 2 things to the 2 parts of the fuse?

 

are you talking about the the fuses in the engine bay or the ones inside the car?

cause i only have a 30,40,30,80,60,30 under the hood. this is how they were when i bought it

 

could the CAS be the culprit ??!

when I didnt have spark the Crank Angle Sensor was the prob.

 

How would i check the cas?

 

all of the coils read 1 ohms does that mean they are bad?


You would test the amps with a multimeter same device that you would test the pack with.

That is, unless your multimeter only measures resistence. Mine measures continuity as well. So yes, when you test the fuses you would touch them as you describe....excpet now I'm not sure that you have the right device. I have a Digital Multi Meter from radio Shack. It beeps when you have a closed-continuous circuit.


are you talking about the the fuses in the engine bay or the ones inside the car?

cause i only have a 30,40,30,80,60,30 under the hood. this is how they were when i bought it


Under the hood those fuses might be out. So yes you'd check those.

And you would also check the 15 A which is inside the car. But instead of testing it. Just replace it.

One Q. though befopre you do all that.

Do you have spark in the trailing coil?

 

yes the trailing coil sparks. the car seems like it wants to start but it wont keep firing enough for it to idle.

 

the device i have has ohm's, dcv,dcma, and acv.

 

yes the trailing coil sparks. the car seems like it wants to start but it wont keep firing enough for it to idle.


If the trailing fires then I'm not thinking fuses so much now as the CAS.

If the CAS is whacked, well obviously it might not be telling the pack to fire. Since you replaced the leading pack for a functional one, then its probably not the pac but the components that tell it to fire. A burnt up 15A engine fuse would cut the spark to both L and T packs.

Are you absolutely sure the leading coil isn't sparking? If you are. Then you might want to check the plug that goes to the CAS. Is it gummed up or in disrepair? Any of the wires at the base of the plug split or broken even minutely so you can see bare copper wire? Is it pluged in together all the way? Maybe also unplug it and examine the bare metal connections for corrosion. And try and remember it you messed with the CAS plug that might have caused damage to it, like pulling on the wires instead of the plug itself, to seperate it.

I'd carefully examine the CAS plug and then go from there.

I know Paruvainrx7 had a similiar frustrating problem.

 

i am pretty sure the leading coil isnt sparking i tested it a bunch of times with 2 different spark plugs. I'm not sure where the cas plug is located. i'm looking in the fsm right now.


I cant find the cas in the fsm. if you have a picture or tell me where its located so i can check this out.

thanks

 

The CAS is the crank angle sensor.

It is located on the drivers side part of the engine.
It has a round black top on it. I have no camera at the moment. But here is a picture I found without
its top cover.





Obviously, if it had a top to it. It would be black and round. Inspect the plug on it.





Be sure that when you seperate it, you seperate it from the plug itself, do not pull on the wires as a method to unplug it. Sometimes the plug can be a stubborn bitch to get apart. So clean it off and look at how it comes apart before disconnecting it.

 

Is this it? the plug is pretty clean. I went ahead and cleaned the male connectiong part with a cue tip but i dont have anything small enough to clean the female connector. So if this aint it what could it be?

should i open it up and look inside?

 

Yeah that's it.


Is this it? the plug is pretty clean.


okay. Well that's step one. Make sure the connections from the CAS are in tip top shape. Did you examine the cannector that you didn't clean, carefully. Was there corrosion?


So if this aint it what could it be?


This can start to get pretty complicated. Let me think about it for a while cause it can get hairy. At least for me anyway.


should i open it up and look inside?


Maybe. But not yet.

Will your friend let you take out his CAS and swap?
Before we give ourselves a headache with the internal components of the CAS and its related circuit you might just be better off swapping them out to see if you have a change.

One thing though. You'll have to mark your friends CAS in relation to his front cover (where the CAS goes into) so that you'll reinstall it properly again. You will also need a timing light. And you'll have to align the CAS gear with its mark at the base of it when installing it in your car and back into your friends. Sometimes this can be a pain in the *** for noobs....So if you don't think you can re-do your friends....You might just want to get another CAS from somewhere. I think Mazdaspeed7 has one for cheap.

Might also want to see if the FSM gives you a way to test the CAS first before any of the above.

 

I don't see anything in the fsm about testing the cas, it just shows how to do the timing. I'll ask my friend if I can try his since his car doesnt run.

 

Just talked to my friend and he is getting ready to fix his car so I can't borrow his cas. Any one know of a way to test the cas to make sure its working? Could I like use a multimeter thing to see if its getting the right amount of volts or something? I'm willing to try any I want to drive my car its been down for almost 2 months now.

 

Yeah, start a new thread on testing the CAS. You might get lucky and hailers will help.

I would carefully examine this thread:

https://www.rx7club.com/showthread.p...hybridxx+spark

And once you have.Then write about what you don't understand regarding any of the proceedures, lingo, or descriptions.

I wouldn't just fire off a new thread. Take your time to think about xxhybridsxx thread, because like I said this type of electrical demon can get hairy.