hatemy7

I drove the car home from work and now its not getting spark to the motor. It turns over and is getting fuel just no spark, pulled plugs and replaced still nothing. Pulled the wires loose hooked them to theold plugs laid on the windshield (not touching) turned over nothing. Any suggestions? Never have had a problem before..


88 T2 also...

PLease help me out let me know what it can be

satch

iTrader: (1)

I think there is a Black/Yellow wire connected to your coils. Does this wire have battery voltage to it with the key to on. Does your main relay click with the key to on? If not check the 15 amp Engine fuse in the interior fuse box.

HAILERS

***** Pulled the wires loose hooked them to theold plugs laid on the windshield (not touching)*********************8

Sorry, it does not work like that. The base/threads of the sparkplug have to be in contact with the chassis or engine housing for spark to happen. Windshields don't count in this case. Just FYI and noting more or less.

hatemy7

OK let me try it out then....

hatemy7

Ok I am not getting any spark? If I was to change the Coils would that fix the problem and if not what can it be then?

satch

iTrader: (1)

Unless you provide some info it is hard for "anyone" to diagnose your problem. To start over, does the B/Y wire have voltage on it with the key to on? Are your coil/igniters bolted firmly to the fender so as to provide a proper ground?

hatemy7

Yeah everything is the way it should be. I took the spark plug wires and stuck a screw driver to see if it got contact or any lil spak while my friend turned the key and nothing...

satch

iTrader: (1)

The white plug connected to your leading coil also has a Green/Yellow wire to it. Disconnect this plug and check for voltage on the G/Y wire with the key to on while you manually turn the main pulley and this will verify if the leading coil is receiving a proper voltage signal to assist it in firing. As the pulley is turned eventually the voltage on the meter will go from 0 volts to 5 volts very briefly and then back to 0 volts. You need to see 5 volts or the coil won't fire.

Also, was the screwdriver grounded to the body of the car?

sharingan 19

iTrader: (16)

Thats interesting, because when I was diagnosing a spark/tach issue I laid all for plugs on the top mount (insulated w/ a block of wood) and they were all sparking, albiet one of them very weak.

To the OP have you checked the main (80 or 100amp) fuse under hood?

hatemy7

well if the main fuse was blown, wouldnt anything not turned on?


The cranks over just fine with no problem just no spark

satch

iTrader: (1)

If the starter cranks with the key to start that verifies the main fuse is good. Try checking for spark again grounding the plug or remove the plug wire from the bore and placing the plug wire as close to the bore while leaving a space and start the car and observe for spark. If no spark then check the G/Y wire as suggested.

Bamato

iTrader: (6)

What was putting a screwdriver in the wire going to do?

hatemy7

Give it contact.. Ive done it before

hatemy7

so anymore ideas?

satch

iTrader: (1)

Did you check the G/Y wire yet? You can have the newest coil being in the greatest condition humanly possible but if there is no periodic voltage on the G/Y wire then it is physically impossible for the coil to work. So what more ideas are you needing?

hatemy7

What is the G/Y wire?

and if this is a stupid question well I apologize...

satch

iTrader: (1)

Post #8, post #8, post #8................................................

HAILERS

The sparkplug can't fire unless there's a path to ground. Period.

lonewolfrx

Check your fuse. i had a problem with no spark once turned out to be a hairpin cut on the egi fuse

hatemy7

Ok guys let me check it out today after work

hatemy7

im going to check this today after work.. sorry school is killing me guys, but I appreciate everyones input and help

hatemy7

ok i did everything that youn guys suggested and still no spark. I went as far changing the Coils just incase it was bad but no spark. I am starting to think that it may be a fuse from inside the car....

satch

iTrader: (1)

What results did you get when you checked the G/Y wire? Remember, it was supposed to go from 0 volts to 5 volts and then back to 0 volts.

hatemy7

Just like you said. It didnt do exactly like you said but it went from 5v, 4v, 3v and then zero...

satch

iTrader: (1)

Did you do this test on both the old and new coils? Also, are you certain that the Black/Yellow wire at the leading coil has battery voltage with/key to on?

The coil only needs three things to fire if the coil itself is in working order.

1. properly grounded
2. battery voltage on B/Y wire
3. G/Y goes from 0 to 5 volts when engine turns over.