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1994 ford f150 2wd truck


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dog_4003
User

Mar 27, 2012, 1:46 PM

Post #1 of 8 (3949 views)
1994 ford f150 2wd truck Sign In

i have a 94 ford f150 2wd truck 5.0 v8 302 cid. engine quit firing. no fire at spark plug. any idears what it could be. engine over 200,000 miles.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 27, 2012, 1:59 PM

Post #2 of 8 (3933 views)
Re: 1994 ford f150 2wd truck Sign In

 Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dog_4003
User

Mar 27, 2012, 4:11 PM

Post #3 of 8 (3895 views)
Re: 1994 ford f150 2wd truck Sign In

no disrespect. but i said the spark plugs are not firing. what does that have to do with the fuel injectors. they have no baring on the spark plugs. im thinking its coil or maybe problem in distributer.


nickwarner
Veteran / Moderator
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Mar 27, 2012, 4:23 PM

Post #4 of 8 (3890 views)
Re: 1994 ford f150 2wd truck Sign In

He said check injector pulse because if you don't have it that's a fast way to narrow down why your don't have spark. There are posts locked to the top of the forum for people to read titled if it will crank and not start. I would suggest reading them.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 27, 2012, 4:26 PM

Post #5 of 8 (3887 views)
Re: 1994 ford f150 2wd truck Sign In

You just proved how little you know and how much help you really need but unfortunately, I don't have time for people that expect me to justify everything. I'll just go help someone else instead.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Mar 27, 2012, 7:43 PM

Post #6 of 8 (3872 views)
Re: 1994 ford f150 2wd truck Sign In

What is interesting about TFI(thick film ignition) is that as long as you have power, ground, and a signal called PIP (Profile ignition pickup) from the stator in the distributor, you'll have spark. You could unplug the engine computer and still have spark while cranking the engine if the ignition module is good and you have a signal going to it from the stator.

Checking for injector pulse would tell you if you have a PIP signal from the stator going to the engine computer to fire the injectors. That same PIP signal goes to the ignition module.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Mar 27, 2012, 8:03 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 28, 2012, 3:07 AM

Post #7 of 8 (3855 views)
Re: 1994 ford f150 2wd truck Sign In

That's a lot more typing than what should have been sufficient.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
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Mar 28, 2012, 4:51 AM

Post #8 of 8 (3848 views)
Re: 1994 ford f150 2wd truck Sign In

Your probably right, but hopefully the OP now kind of understands what the injectors have in common with the ignition system. They share the stator signal.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Mar 28, 2012, 4:52 AM)






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