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Only starts with either? why

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Offline szabotage

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Re: Only starts with either? why
« Reply #30 on: September 20, 2004, 03:42:37 PM »
what years are the two trucks that you are comparing to? pre 91 kicks differ from the post 91's and the difference is in the fuel system relays.

next question is did you get fuel coming out of the return line? if not then the problem may lie in the injector.   find out why the injector isn't firing.

when you used ether to start the vehicle did you put it in the tank or did you spray it down the throttle body?
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Offline szabotage

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Re: Only starts with either? why
« Reply #31 on: September 20, 2004, 03:48:11 PM »
Quote


BTW we swapped the relays. We also tried push starting it and that works too.  ::) Yep here come the jokes.  :P\

Mike


so when you crank the key to the start position does your starter turn over?  sounds like your starter is shot if your kick is running after you push start it.which has nothing to do with your fuel or ignition.
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Offline Zukipilot

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Re: Only starts with either? why
« Reply #32 on: September 20, 2004, 10:26:38 PM »
OK, you have fuel pressure before start up, and it runs fine once started.

What is different in fuel supply during startup than while running down the road??? Does the fuel dump in from a different injector to start it? Maybe the injector is just partially clogged not allowing enough fuel to dump in during start up, but enough to allow it to run down the road. Wouldn't the computer automatically adjust for the low flow of fuel while running dow the road?

Confused as always :P
Zig
« Last Edit: September 20, 2004, 10:35:17 PM by Zukipilot »
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Offline LilRed

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Re: Only starts with either? why
« Reply #33 on: September 21, 2004, 06:37:45 AM »
    My '92 did the exact same thing when the ECM went bad.  I'd guess you've got a wiring problem, maybe back to ECM from ignition.  ECM tells fuel pump to run based on signals it recieves from the ignition system.  Or its a sensor.  Have you tried to read the trouble codes stored in the ECM?
   
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Offline wildgoody

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Re: Only starts with either? why
« Reply #34 on: September 21, 2004, 11:03:16 AM »
Jump the fuel pump relay, then
try to start it, if it starts, you got
a problem with the start position
and the fuel pump running

Good Luck

Wild
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Offline jerryp58

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Re: Only starts with either? why
« Reply #35 on: September 21, 2004, 12:23:37 PM »
Quote
Jump the fuel pump relay, then
try to start it, if it starts, you got
a problem with the start position
and the fuel pump running

Good Luck

Wild


Could you achieve the same effect by putting the ignition to "On" and jumping the starter solenoid?
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Offline Mikerpm4x4

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Re: Only starts with either? why
« Reply #36 on: September 21, 2004, 01:39:28 PM »
Quote


Could you achieve the same effect by putting the ignition to "On" and jumping the starter solenoid?



That doesnt work either! I thought that it should but It dont.  >:(
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Offline Mikerpm4x4

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Re: Only starts with either? why
« Reply #37 on: September 21, 2004, 01:42:03 PM »
Quote


so when you crank the key to the start position does your starter turn over?  sounds like your starter is shot if your kick is running after you push start it.which has nothing to do with your fuel or ignition.



:P Yea the starer works... Im not that helpless... well... ::) ....
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Offline Mikerpm4x4

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Re: Only starts with either? why
« Reply #38 on: September 21, 2004, 01:45:46 PM »
Quote
what years are the two trucks that you are comparing to? pre 91 kicks differ from the post 91's and the difference is in the fuel system relays.

next question is did you get fuel coming out of the return line? if not then the problem may lie in the injector.   find out why the injector isn't firing.

when you used ether to start the vehicle did you put it in the tank or did you spray it down the throttle body?



On is a 92 and one is a 93. I think I posted earlier that they were both 94s but I was mistaken. Im puttin either in the injector. I pulled the pressure line from the tank off the throttle body.

Mike
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Offline Mikerpm4x4

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Re: Only starts with either? why
« Reply #39 on: September 21, 2004, 01:57:31 PM »
Quote
I just noticed a clicking noise from a relay under the dash. At the same time the injector and one other thingy by the timing belt. The blue thingy next to the red thingy... ::).The relay is right next to the ecm. I used a test light to compare the problem tracker to the working one and the pink wire with the black stripe blinks with the key in the run position while it is steady on in the good tracker.

Mike


I think if I can figure this relay clicking thing out the problem will be solved. They have to be related. Any Ideas why they would cycle like that?

Mike

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mperry

Re: Only starts with either? why
« Reply #40 on: September 21, 2004, 02:14:13 PM »
There's one thing to try. Crank it over for a couple seconds, release, then try again.

That worked for one of my former rigs, when first starting. (Sometimes I'd have to repeat 3 times.)
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Offline Mikerpm4x4

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Re: Only starts with either? why
« Reply #41 on: September 21, 2004, 02:26:12 PM »
 ::) Already tried that too.



Id take it to a local repar shop but thats where she bought it from... cause they couldnt figure it out.   :-/ Im going to go over in a couple of days and look at it some more so... ::)


Thanks for the help so far guys, Though none of it has worked yet I think its helping me narrow it down.

Mike
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Offline wildgoody

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Re: Only starts with either? why
« Reply #42 on: September 21, 2004, 04:43:58 PM »
You could always install an either
squirt kit like they have for Semi trucks
in the cold weather   ::)

Wild
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mperry

Re: Only starts with either? why
« Reply #43 on: September 22, 2004, 08:16:51 AM »
I'm assuming the dudes you bought it from had the electronics checked out, made sure the ignition system (plugs, rotor cap) and such were OK? Also, as mentioned, make sure the wires are correctly connected to the regulator (Getting + on the - terminal weakens the spark on many rigs.)

If they haven't checked those out, it may be one of them. The electronics will enrichen the fuel mix & allow it to start. If not working properly, it will be hard starting.

(I was betting on that fuel pump, originally.)
...just a thought...
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Offline wildgoody

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Re: Only starts with either? why
« Reply #44 on: September 22, 2004, 02:06:44 PM »
A faulty temp sender (for the computer
not the guage) could be telling the computer
that the truck is warm/hot and not injecting
enough fuel for cold start, which brings up
a question, will it start when hot without
starting fluid ???

Wild
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