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Canadian Poncho Homepage -> Canadian Poncho -> Pre 1958 Canadian Pontiac Power Train Tech Forum -> Helping a fellow Pontiac owner 74 GTO
Post Info TOPIC: Helping a fellow Pontiac owner 74 GTO
the70judge


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Helping a fellow Pontiac owner 74 GTO
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I have a buddy Don down in Surrey who has a 4 gear 74 GTO and when he tries to shut her off it won't shut off????  He has to brake and drop the clutch to get her to shut off. Anyone have any ideas on how we can find the problem..

Pete

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Pete
Halfbreed


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I would start at the ignition switch. Check voltage after your shut off method. Check voltage with key off. The switch may be hot enough to burn you, so be careful.

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dualquadpete


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Pete, when you check out the ign. switch, also check the plastic plug connector on back of switch, if it got hot, may have melted it inside & hot wire & ign. side may be touching. Just a thought, Halfbreed"s on the right track, unless you have a burn't wire harness the switch is where to start!!!   Pete

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rabbit64cs


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has he done any alternator work lately?? wires mixed up and is backfeeding a constant 12 volts into the system? not through the key switch? melted wires will do the same thing. A quick check would be to disconnect the alt. tape up the wires and see if it shuts off with the key.

I've had melted wires cause this problem as well.

later...rog

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later...rog

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pontorquer


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Here's a pic of another 1974 GTO I took at the Portage LaPrairie MB carshow last summer, Pontiac 455 4 speed in that one, the 350 was stored away.

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the70judge


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Thanks guys.. You are down the right track. I will pass the info onto him and he can check it out.. I think I asked him if he was or did any alternator work and he said no and it just happened one day when driving..

I'm in a woe here with my 70 Judge now as I just murdered my 3.55 Ring and Pinion and Im having a hell of a time finding BOP parts for her..  Its a 8.2 10 bolt. and for some reason or another the guts are different then Chevy.. go figure...  Having a Canadian Pontiac has many different avenues for sure..

Pete



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Pete
427carl


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the70judge wrote:

 

Thanks guys.. You are down the right track. I will pass the info onto him and he can check it out.. I think I asked him if he was or did any alternator work and he said no and it just happened one day when driving..

I'm in a woe here with my 70 Judge now as I just murdered my 3.55 Ring and Pinion and Im having a hell of a time finding BOP parts for her..  Its a 8.2 10 bolt. and for some reason or another the guts are different then Chevy.. go figure...  Having a Canadian Pontiac has many different avenues for sure..

Pete


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Join Date: Jul 2006
Location: Richfield, Oh
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10 bolt 8.2 olds pontiac buick gears NEW
10 bolt 8.2 1964-1967 cutlas F-85 New ring and pinion gears

3.36 11-37
3.55 11-39
3.73 11-41
3.90 10-39

ALL NEW and 190.00 a set these just came out so now you have a much better selection for the BOP 10 bolt 8.2 rears.

27 spline yoke just like the original
will fit 64-72 GTO Lemans Tempest
will fit 1964-1967 skylark,GS

190.00 per set.

 off Olds site



-- Edited by 427carl on Wednesday 4th of November 2009 11:48:33 AM

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CDNROUNDPORT


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Does the car have HEI or just converted to HEI?

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the70judge


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pontorquer wrote:

Here's a pic of another 1974 GTO I took at the Portage LaPrairie MB carshow last summer, Pontiac 455 4 speed in that one, the 350 was stored away.



I bet she goes like a raped ape with that combo in her, being so light!!!

Thanks for the pic.. I will send Don the link so he can read all the great ideas from our site..

Pete



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Pete
the70judge


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CDNROUNDPORT wrote:

Does the car have HEI or just converted to HEI?



Not sure... Im thinking it is Hei... but he has not done anything to her and all of a sudden this happens???  Wire woe or Gremlins!!



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Pete
the70judge


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Thanks !!   I found that site later on after posting here... It has some very useful info on there for sure !!  My parts guy was able to get the parts so I will be back on the road ready for winter on friday...

Pete

427carl wrote:

 

the70judge wrote:

 

Thanks guys.. You are down the right track. I will pass the info onto him and he can check it out.. I think I asked him if he was or did any alternator work and he said no and it just happened one day when driving..

I'm in a woe here with my 70 Judge now as I just murdered my 3.55 Ring and Pinion and Im having a hell of a time finding BOP parts for her..  Its a 8.2 10 bolt. and for some reason or another the guts are different then Chevy.. go figure...  Having a Canadian Pontiac has many different avenues for sure..

Pete


Registered User

Join Date: Jul 2006
Location: Richfield, Oh
Posts: 203
10 bolt 8.2 olds pontiac buick gears NEW
10 bolt 8.2 1964-1967 cutlas F-85 New ring and pinion gears

3.36 11-37
3.55 11-39
3.73 11-41
3.90 10-39

ALL NEW and 190.00 a set these just came out so now you have a much better selection for the BOP 10 bolt 8.2 rears.

27 spline yoke just like the original
will fit 64-72 GTO Lemans Tempest
will fit 1964-1967 skylark,GS

190.00 per set.

off Olds site



-- Edited by 427carl on Wednesday 4th of November 2009 11:48:33 AM

 



 



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Pete
pontorquer


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I thought HEI came out in 1975 ?

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