ignition no spark output?

check for spark directly from the ignition coil with a spark tester. This guide can help us

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please run down these guides and report back.

check fuses and check them again do you have check engine light when 1st key on did you check fuel pump and pressure you may want to try a new PCM relay on the fender

i have a 1989 ford f 150 put new plugs, wires, distributor cap, and the rotar bug it ran good for a day then the next day it started up went a couple miles then it slowly died. Got it home the coil was not getting spark bought a new coil still none so i we bought a distrubitor module and that didnt work can you help me figure it out

Check and test the distributor pick-up coil

[quote:3bdc3ad967="rasmataz"]Check and test the distributor pick-up coil[/quote:3bdc3ad967]

Thats probably it i didnt think of that but can you tell me how to get that off

Disconnect it and measure the resistance on it and also check it if its shorted to ground

[quote:de5692106c="rasmataz"]Disconnect it and measure the resistance on it and also check it if its shorted to ground[/quote:de5692106c]

That was it so we got a hole new distributor and it woks thanks for your help.

I got a 1988 ford f-150 with the 4.9 that just died on me. It is getting fuel but I cant get the coil to sprak. Both terminals on the coil are getting juice(white/ light blue wires, and green/yellow wire) but the coil wont spark. I am aware that it is probaly not getting ground. But don't know where to test for that as there are only 2 wires on the coil and both are hot.

Thanks for any help possible.

I am not totally sure, but I am pretty positive that the coil gets its ground from the casing that mounts it on to the block/ frame. It sounds to me that you have a bad coil. Just because its getting power doesn't mean the coil is fully functioning. Electrical components are funny like that. Make sure that the coil is seated tightly. I will check into this more. I still think if you replaced the coil you would be set.

i have a 1988 ford f150. was stalling for a couple of months. the last time it stalled it wouldn't start again. replaced the distributor cap, rotor button, ignition control module, and the coil. after i put the coil on it started and drove great for 2 days, then stalled again and now won't start. could it be a computer problem or do you have any idea what to check.

has the weather been moist where you live?

are you plug wires routed properly?? you replace the coil with a good quality one or a cheap offbrand? plug wires on the plugs properly? too high resistance?

i want you to check spark on all cylinders with a spark tester.

do all have spark? how bout directly from coil with engine cranking? get back to me.

Glad to hear that you have fixed your problem. make sure you used all of the heat transfer gel you have gotten with the module on the back side. and if you ddint get any be sure to buy some and add it or else the module could overheat and burn up.

Electrical problem
1987 Ford F150 V8 Four Wheel Drive Automatic

Been having problems starting my 87 f150.Thought at first it was a fuel problem so I changed the inline pump,filter,and relay.Sometimes tapping relay would allow it to start.Now nothing I try seems to work.I checked wiring at both tanks and all seems fine there. I pulled the front plug on drivers side and it smelled strongly of gas so I plugged it back into ignition wire rolled it over and no spark. I used my test light and check harness plug on the coil while still plugged in switch on and both lighted up.Now im lost any help would be greatly appreciated

Problem solved. Was a bad ignitition control module. Thanks evryone for help!!!

Transmission problem
1987 Ford F150 V8 Four Wheel Drive Manual
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Truck will turn over for a few seconds then cut off. There is no spark at plugs. All ignition components have been recently replaced.

with key on should have check engine light on
if not check fuses and PCM relays and connectors


check spark control module

My pickup runs great when cold, however when it gets hot (operating temperature) if it stalls it wont restart for 10 minutes or so until it has time to cool off. I have replaced the ignition coil and tfi module, several relays (various ones just trying to narrow a few things down). Just by chance I discovered if you disconect the timing sprout it will restart. Any ideas???

hmm, sounds like it could be a badhall effect sensor.

its like a pickup coil only thing is ford switched to the hall effects in 87.

check that first. if it feels like tar it is definetely bad.

Well I have been at work for the past few days but did get your reply...one day at lunch I stopped by the parts store and found out I could get a new distributor for $100, not bad...comes with the PIP sensor and a new TFI module, so I sprung for that (figured I may as well change it all just in case!). After work last night I came home droped it in and went for a drive. Still doesnt restart when hot...its a real head scratcher. I bought the truck cheap, as it had this problem when I got it....but I thought I could fix it...that was 2 years ago

i think there may be a issue with the computer tryign to overadvance, and the hot engien will never start you can try to retard the timing manually a few degrees that way it wont advance so much when hot, does this help?

by disconnecting the spout the computer reverts to base timing and starts.

Sorry it has been a while, things have been crazy in my neck of the woods! I tried the timing trick, with no luck really. I have a pretty heavy relay, I think i might put that in line with the timing spout, while getting power from the coil (so that the spout is disconected while cranking the starter). I know its not the right way to fix it but it may work for a while!

It does run alot better with the new distributor and all!!

bypassing the spout when cranking helps the engine start better? have you checked your igniiton timing?

make sure your hall effect sensor and the metal trigger wheel is properly set with eachother.

my truck has no spark it ran the other day came home and turned it off hooked up the battery charger for about 20 min came back out and tryied to start it and it woundnt it has no spark took test light and put on coil and had power to both sides and when turned motor over test light flashed on coil but still no spark even tryied new brain box and still nothing can eneyone help me

take a test light and check to make shure you have a 12volt source going to the coil.... if you do then check the power coming out of the coil or replace coil.
if you have spark from the coil to the distributer then check the cap and rotor. some times the metal tong that transfers power from the middle (coil) lug to the rotor to the pickups that go to the wires can break off or get corroded. another thing it may be is the magnetic pickup in the distributer which tells the coil to fire. try a different distributer if one is available

Have an 85 F150 XLT, replaced altenator and coil. Not getting any spark thru distributor. Help me trace it down? Does anyone know what it could be?

I had this problem constantly with my '84. The (rectangular) module which was/is attached to the distributor was placed too close to the engine and gets too hot and malfunctions. Either it will cool off and work for a while or will not work again and it needs to be replaced. I learned to keep an extra one handy as I used it more than my spare tire. Pick up a one or two at a junk yard for about $10.

Thank you, that was the problem.

Electrical problem
1985 Ford F150 V8 Two Wheel Drive Automatic ? miles

I just put in another 302 in my truck, it has new alternator, starter, relay, distributor, cap, rotor, points, plug wires, and coil. I had it running ok, and went to test drive it, I found a small leak in the brake line, repaired it, and went to start it in the morning for a test drive, and I have no spark. I bought a new coil, and nothing. I pulled the coil wire out, no spark, no arcing from any wires, spark plug wires too. I did nothing but replace a brake line, and now I have nothing. i checked fuses, ran power direct, what am I missing?

Ok lets start with the brake fluid leak, where was it? Any wires get wet? Did you have to lean over a fender? Which side?

It was from the distribution block, to the front DR side wheel, very short, no wires around there.

If you have a duraspark inition, the module is on that inner fender, check the plug, it may have been knocked loose when you were working on it. If it's TFI, it's on the distrubutor, either way, if it has no spark, pull the module, and have the parts store check it.

its all simple, points and coil, no electronic ignition. But I will double check everything again.

What year engine is in this truck? Points went out in 75'! Does it crank but not start? Or seem dead? If it cranks, try another set of points, I have seen them be defective! Or recheck gap/dwell. Check distributor for sideplay of the shaft too.

I am rechecking points today, I chose to go old schoo
l when I put this motor in, didn't want all the electronic hassles.

Friend bought the truck, guy said it just quit running one day. Its a 85 f150 with the 4.9 straight 6. We replaced the ICM and that didn't help then we replaced the ignition coil today and still nothing. I tested it at the coil itself and its not getting any spark at all there so its not the plugs or the cap and rotor. Any ideas what it could be?

scan for codes and check fuses underhood see if any fusible links by starter relay are burnt up

It doesn't have a computer on it so I can't check codes, its carburated. And I don't see any fuseable links on it, there's no fusebox under the hood nut all under the dash are ok

check resistance of pickup coil in dist if not 400-800 ohms replace it. also like I said in last rely check fusible links at relay by battery they are wired to it they ae gray/orange an dconnect to a red wire and yellow wire also pull the module off the fender well and have it tested. auto parts can do it.

truck has no spark, replaced cap, rotor, and coil recently