| Problem Diagnosis Got a problem you can't fix? Post here and one of our members will answer as soon as possible. |
10-08-2008, 03:34 PM
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#1
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AF Newbie
Join Date: Oct 2008
Location: marshall, Texas
Posts: 5
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Won"t start
91 Jimmy with a 4.3L won't start. Done changed everything related to ignition issues. No spark at all. Any ideas?
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10-08-2008, 03:51 PM
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#2
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AF - Advisor
Join Date: Sep 2005
Location: New London, Missouri
Posts: 13,084
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Re: Won"t start
Tell us what you changed and done?
Is dist rotor turning?
Coil and ign have 12 volts to them?
Has coil and ign module beeen tested?
__________________
Remember proper testing gives us the answer to many problems.
MT
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10-08-2008, 05:22 PM
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#3
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AF Newbie
Join Date: Oct 2008
Location: marshall, Texas
Posts: 5
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Re: Won"t start
Quote:
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Originally Posted by MT-2500
Tell us what you changed and done?
Is dist rotor turning?
Coil and ign have 12 volts to them?
Has coil and ign module beeen tested?
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Changed the cap, rotor, ign. module, coil, plugs, wires.
12 volts yes
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10-08-2008, 06:58 PM
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#4
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AF - Advisor
Join Date: Sep 2005
Location: New London, Missouri
Posts: 13,084
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Re: Won"t start
Quote:
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Originally Posted by charles1956
Changed the cap, rotor, ign. module, coil, plugs, wires.
12 volts yes
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Was they known good parts?
Is the dist rotor tunning when cranking?
Have you checked the dist pick up coil?
Are you checking for spark at coil or dist cap or on end of plug wire?
__________________
Remember proper testing gives us the answer to many problems.
MT
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10-08-2008, 09:51 PM
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#5
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AF Newbie
Join Date: Oct 2008
Location: marshall, Texas
Posts: 5
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Re: Won"t start
Quote:
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Originally Posted by MT-2500
Was they known good parts?
Is the dist rotor tunning when cranking?
Have you checked the dist pick up coil?
Are you checking for spark at coil or dist cap or on end of plug wire?
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They where bad or on the verge of going bad.
Will check in the morning.
Checked at coil and at the end of the plug.
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10-09-2008, 09:54 AM
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#6
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AF - Advisor
Join Date: Sep 2005
Location: New London, Missouri
Posts: 13,084
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Re: Won"t start
Quote:
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Originally Posted by charles1956
They where bad or on the verge of going bad.
Will check in the morning.
Checked at coil and at the end of the plug.
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Hard for them all to get bad at one time .
Throwing parts at it may wind up a bad new part.
Retest everything you replaced.
Can your parts place test the complete dist and coil for you?
__________________
Remember proper testing gives us the answer to many problems.
MT
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10-09-2008, 10:17 AM
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#7
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AF Newbie
Join Date: Oct 2008
Location: marshall, Texas
Posts: 5
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Re: Won"t start
Vehicle set up for five months before I got it. Dist. cap and rotor was really bad, the ignition module tested bad, so did the coil. Will retest and thanks.
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10-09-2008, 10:39 AM
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#8
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AF - Advisor
Join Date: Sep 2005
Location: New London, Missouri
Posts: 13,084
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Re: Won"t start
And do not forget to check/test the dist pickup coil.
__________________
Remember proper testing gives us the answer to many problems.
MT
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10-09-2008, 03:51 PM
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#9
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AF Newbie
Join Date: Oct 2008
Location: marshall, Texas
Posts: 5
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Re: Won"t start
Appreciate the friendly advice, it was the pick-up coil. It was seized on the shaft, had to replace the whole set-up.
Again, many thanks.
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10-09-2008, 03:57 PM
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#10
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AF - Advisor
Join Date: Sep 2005
Location: New London, Missouri
Posts: 13,084
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Re: Won"t start
You are welcome and thanks for posting back how it went and what it was.
Glad you got it fixed.
__________________
Remember proper testing gives us the answer to many problems.
MT
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