A curious ????
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A curious ????
I have an 87 F150 Lariat that was formaly a 300 inline 6 Fuel Injected (yuck), Had no choise to do a transplant... It now has an 81 302, Carburated for a heart. I am having a little problem get the dam thing to run below 1250 rpm... I have no Vacum leaks as I used a can of starting fluid to detect any suck leaks , none were detected aside from that I have 1 other problem U could dam near burn yer hand off on my coil. I have traced my ignittion wire from the ignition switchand have everything wire as it should be according to my shop manual 
am I missing something here ????? I have been fighting with this problem ohhh for about a month now. BTW I do live in western canada so winther is coming, and the wife wants her car back
am I missing something here ????? I have been fighting with this problem ohhh for about a month now. BTW I do live in western canada so winther is coming, and the wife wants her car back
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Joined: Jul 2003
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From: central valley California
have you disconnected the PCM from the EFI IV system if it is still wired into the coil/ ignition system it can advance spark and timing to compensate for lose of correct signal from all relays.. that would be one thing to look at..
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RofL
Yeah sry forgot to mention that the eec computer is not even wired to anything in my truck anymore as it was for the engine components and sensors. all wiring for ingnition comes straight from the 3 ignition wires off the fire wall. Hope that clears things up a tadd. LOL man I'm slipping I'm running a dura spark 2 system as that is what was on the 1981 -- 302.
Last edited by Niteshade; Sep 29, 2005 at 12:08 AM. Reason: forgot something to mention
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From: 3rd Rock
Originally Posted by Niteshade
I have an 87 F150 Lariat that was formaly a 300 inline 6 Fuel Injected (yuck), Had no choise to do a transplant... It now has an 81 302, Carburated for a heart. I am having a little problem get the dam thing to run below 1250 rpm... I have no Vacum leaks as I used a can of starting fluid to detect any suck leaks , none were detected aside from that I have 1 other problem U could dam near burn yer hand off on my coil. I have traced my ignittion wire from the ignition switchand have everything wire as it should be according to my shop manual am I missing something here ????? I have been fighting with this problem ohhh for about a month now. BTW I do live in western canada so winther is coming, and the wife wants her car back
am I missing something here ????? I have been fighting with this problem ohhh for about a month now. BTW I do live in western canada so winther is coming, and the wife wants her car back Stick around someone will be by shortly to answer your question.
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Joined: Aug 2005
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From: Easton,Ks
It sounds like you are feeding the coil Battery voltage all the time, it needs Battery voltage while starting but not while running. You need a 1.1 Resistance wire to drop the voltage down while running.
Your 87 truck did not have a resistance wire for the coil in the wiring, the 81 coil requires the resistance while running and not while starting.
1987 diagram of the system:
http://www.autozone.com/servlet/UiBr...3d800a3a41.jsp
Click on diagram to enlarge.
The 81 System:
Your 87 truck did not have a resistance wire for the coil in the wiring, the 81 coil requires the resistance while running and not while starting.
1987 diagram of the system:
http://www.autozone.com/servlet/UiBr...3d800a3a41.jsp
Click on diagram to enlarge.
The 81 System:
Last edited by subford; Sep 29, 2005 at 08:16 AM.
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Joined: Jun 2004
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From: Central NY
I'm curious, What did you do to lower the fuel pressure to 'carb' levels?
Did you bypass the FDM or swap the tank or something?
Did you bypass the FDM or swap the tank or something?
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Well Thnxs Subford, I have already picked up a ceramic ballast resister( normally a mopar standard part) 
from NAPA, prior to writing this aritcle , Unfortunately my ford dealer thier auto techs couldn't even read the simple wiring diagram lol. Well Papa Tim this is kinda Cool I ran a new fuel line from the tank to the new fuel pump, as the I have no pump in tank in this YR, all their is a filter screen, 
. thnkxs for the help Guy's I'm that is part of my problem. I will find out tomorrow. Let ya'll know how things go.
from NAPA, prior to writing this aritcle , Unfortunately my ford dealer thier auto techs couldn't even read the simple wiring diagram lol. Well Papa Tim this is kinda Cool I ran a new fuel line from the tank to the new fuel pump, as the I have no pump in tank in this YR, all their is a filter screen, . thnkxs for the help Guy's I'm that is part of my problem. I will find out tomorrow. Let ya'll know how things go.
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Thnxs For the assitance :)
Well thnxs for all the help with the elec problem I have been havin that part. I now have a new problem when I drive it I can only go about 60 kph/35 mph need to figure that out as winter is coming fast.
Thnxs for all the help guy's
Thnxs for all the help guy's
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hehehe Timing issue, think I have it figured out now, that and tuning the carb will help out, timing is not where it should be. Me and my dumb a** nver thought to check on that side of the timing chart
Thnxs Guy's
Thnxs Guy's