sleepingciv

ok first off i just did a wire tuck on my 93 pick up with a 22re

everything in the truck works all the way from the fuel pump to the wipers.

but for some reason i have no spark at all.
the injectors work also i can hear them plus smell the gas

I have been searching for a few hours for some kinda answer and cant find anything to my problem. i even added a ground wire to the black wire that plugs right into the coil and nothing.
mind you the truck ran just fine before this.

all fuses are good.
all grounds are hooked up intake. main ground from motor to battery then to the inner fender well. also there was another ground coming from the harness that is grounded to the motor also

so any ideas?

here is the one wire i have power at black wire red stripoe


here is the other ground i was talking about the 2 yellowish wires. the end of this harness goes to the drivers fuse box and all fuses have power

Hadmatt54

You are not dealing with an old points and condensor iginition system. The negative side of the coil is not a ground it goes to the ignitor. If you added a ground to the coil you have effectly grounded out your ignitor. By adding a ground where there shouldn't be one and being electronic it's possible that you may have damaged the ignitor.
The black/red wire is the power that feeds the coil and ignitor, so power is getting to these. Your next step would be to verify the integrity of the comonents with a dc. volt ohm meter and for that you will need to get a copy of the test procedures from someone with a 93 FSM.

sleepingciv

ok thanks for that input.
ya waiting for m brother to show up with a multi meter and see whats going on.

just seams odd there getting power but nothing coming out.

so if that isnt a ground any idea what wire is the ground? i looked and looked for diagrams of the plugs and found nothing

sleepingciv

anyone have a diagram for the c/i?

ChefYota4x4

iTrader: (5)

Just a fairly new'b here, but doesn't grounding out that ignitor cause the ECU to shut down all power to spark creation, for safety reasons? Also; After he removes that ground, doesn't he need to reset the ECU, clearing any codes, before it will allow spark to ignition?

Sorry if that's silly, just trying to help, lol.

ChefYota4x4

iTrader: (5)

http://daemon4x4.org/portal/downloads.php?dcid=17

Not sure if this is right, but I KNOW I've seen a link in someone's signature, for "93 FSM"

ChefYota4x4

iTrader: (5)

Found it, Sleeper, lol.....Good luck...

http://myweb.dal.ca/is353832/93fsm/

ChefYota4x4

iTrader: (5)

Might try some of these, and Google is usually the way I found things, MANY of which were on this site, even when I couldn't find them in the actual site......again, Well Wishes for ya! ......

http://www.google.com/search?hl=en&c...f&oq=&gs_rfai=

sleepingciv

ya those are good but it dont say color or function
and i have searches thats how i stumbled across this site

ChefYota4x4

iTrader: (5)

Dang, ....well, it's a bad weekend to need help, most everyone is out of town. Keep on it here, and by Tuesday, you should hopefully get some answers from some more experienced Yota'TECH's', unlike myself, lol.

Best Wishes

sleepingciv

hey its cool man trust me i apperciate any help

and i thanks you to man

ChefYota4x4

iTrader: (5)

No problem, ....I got LOTS of help on here, and couldn't have done it without it. I'm ok with some tricks and such, but electrical is NOT my suit. I did read, however, MANY places with people saying, "GOT FUEL, BUT CAN'T GET SPARK TO THE PLUGS!", .....with some resolutions, ..but that was over a month ago and I didn't bookmark it, ....mainly cuz my problem was PLENTY of spark and no fuel, lol......

Again, good luck, and if I find those links on my PC later when I'm inside, I'll be sure to pass em to ya.

sleepingciv

thanks


ok i finally got a real test light and my brother hasnt shown up yet with the meter


but can someone confirm this for me? like going now and check in there truck lol
this is the efi relay with the key on i have power to the 2 circled in red not the other 2
also the 2 wire plug that plugs right into the coil.
when unplugged the white wire only has power, plug it in and both have power

sleepingciv

ok i just went threw my harness were i cut and had soldered wires. i had left then lables on them after i was done.

and there all connected and lable to lable


wtf am i missing guys>>


and the coil has a a neg and power right?

sleepingciv

ok the red arrow i have ower coming in.
1 has power going into the coil
2 has power also but why it shouldnt right?

when 1 and 2 are unplugged from the coil only 1 as power.

WTF come on guys

sleepingciv

finally got a freaking multi meter


anyway

primary coil had .6 ohms
and the secondary didnt do sqwat

and the pick up had 229


can the coil just go bad?????

Hadmatt54

ok! From post #13 EFI main relay, not sure if your wire colors are going to match this but this can give you a general idea.
With the key on, at the relay there will be a Black/Yellow that is hot, it comes from the 7.5A ign fuse to the line side of the relay coil. The other side of the coil has a White/Black, it goes to ground and it has no power with the relay unplugged. There is also a Black/Green wire that is hot, it comes from the 15A EFI fuse and it goes to the line side of the relay contact. The fourth wire is a White/Red, no power with the relay unplugged, it connects to the load side of the contact, then goes to the circuit opening relay (line side of contact), the B+ terminal of the ecu and to Vb (terminal 4) of the air flow meter. The only thing that these circuits have in common with the coil and igniter is that they are both energized with the key on.
From post 15 the red/black power feed splits and feeds not only the coil, but also the igniter. The coil is a step up transformer low voltage from the Primary (12v) and high voltage on the Secondary to the distributor. With the key on, the Primary is a complete circuit, if you measure to ground from both sides of the coil you will read 12v. The Secondary is energized waiting for a firing of a spark plug to complete it's circuit.
From your last post , I don't have a 93 FSM, this is from an 89.
Primary coil resistance should be 0.5 - 0.7 ohms, yours was .6 within spec.
Secondary resistance (from the + term of the primary coil to the high tension lead) should be 11.4 - 15.6 Kohms. Unless you have a higher quality multimeter, you are not going to be able to read Kilo ohms. The cheap versions will not push enough voltage to read that resistance.
Pick up coil for a 1989 should be between 140 - 180 ohms.
This may not be what yours should test at because the pick up between an 89 and 93 are different part #'s.

rustypigeon

Greetings. Jumping in here a bit late, but just want to make sure we are on the same page...

I see you have a spark problem but you are checking your EFI Relay. The EFI Relay, in combination with the Circuit Opening Relay, provide the power to run the fuel pump. This relay has nothing to do with spark.

You said your Secondary Coil didn't do squat. This could be the problem. Make sure you have your Ohmeter probes on the Positive terminal (the one closest to the clip for the wire connector) and the high tension terminal (the one that goes to the distributor of course).

Secondary coil resistance should be 9.0-15.4k with the engine cold.

sleepingciv

engine was cold not running lol

but here is the meter i was using

http://www.sears.com/shc/s/p_10153_1...0070921x00003a

rustypigeon

That meter should work. The 20k setting is what you want for the secondary coil resistance.

If you don't get a reading on the 20k, the coil is out of spec.