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  #91  
Old 09-18-2010, 03:57 PM
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Manarius Manarius is offline
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Re: Lets talk about this annoying hot start problem...

Quote:
Originally Posted by oab_au View Post
Yes the problem is obviously caused by age, and the high current flow that the starter solenoid draws. The contacts in the Ignition switch and the Inhibitor switch pit and burn away with age, so they can not pass that sort of current. So the right way is to renew all the components.

The cheap alternative is to fit a relay to the solenoid to take the high current flow off, the switches. The only problem to this is the way the Cruise control uses the starter solenoid to turn off the Cruise control when P or N is selected. If the relay that is fitted has a winding resistance that is too high, the starter will operate, when the Cruise is on and P/N is selected.

The winding in the relay has to be low enough to prevent the small current that the Cruise runs to ground through it, won't pull it in to operate the starter.

The relay that you used had a 500 ohm winding, so it would only take 0.024 Amps to operate it. If a relay with a winding of about 85 ohms is used it would take 0.14 amps to operate it. too high for the Cruise current to operate it, I think.

Harvey.
Necrothread!

I am interested in this. Is there a way to determine the resistance of a relay already installed on the car? Is it labelled? What poles should I stick the multimeter to?
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-Jason
(8/23/07-Present) 1995 Subaru SVX LSi (197k) Polo Green (#1102) 03/95
Mods: DDM Tuning 4500k 35w Low Beam HID, 100w H3 Bulbs, Extra Ground Cables, 15 minute $12.96 mod,
svxfiles designed transmission mount (), sporting a "new" tail light bar,
silver BBS rims, custom power steering cooler (one that doesn't dump ATF constantly), new negative lead cable, no more third or fourth gear
(1977-Present) 1977 Chevrolet Corvette (81k) Silver
(12/01/2011-Present) 2005 Subaru Outback 2.5i Limited 5MT (97k)
I have a bad feeling about this.
-Obi Wan Kenobi
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  #92  
Old 09-18-2010, 05:20 PM
oab_au oab_au is offline
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Re: Lets talk about this annoying hot start problem...

Quote:
Originally Posted by Manarius View Post
Necrothread!

I am interested in this. Is there a way to determine the resistance of a relay already installed on the car? Is it labelled? What poles should I stick the multimeter to?
Jason they are 85/86 the winding terminals. It should have the old solenoid wire on one side and the ground wire on the other. A multi-meter set to OHMS should read about 80 ohms.
What is the problem?

Harvey.
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  #93  
Old 09-18-2010, 09:57 PM
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Manarius Manarius is offline
1995 Subaru SVX LSi Polo Green
 
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Re: Lets talk about this annoying hot start problem...

Quote:
Originally Posted by oab_au View Post
Jason they are 85/86 the winding terminals. It should have the old solenoid wire on one side and the ground wire on the other. A multi-meter set to OHMS should read about 80 ohms.
What is the problem?

Harvey.
I'm just interesting in seeing whether or not having the cruise control on and putting it in neutral will mess up the car. If the resistance is low enough, it shouldn't be an issue as in the post I quoted, right?
__________________
-Jason
(8/23/07-Present) 1995 Subaru SVX LSi (197k) Polo Green (#1102) 03/95
Mods: DDM Tuning 4500k 35w Low Beam HID, 100w H3 Bulbs, Extra Ground Cables, 15 minute $12.96 mod,
svxfiles designed transmission mount (), sporting a "new" tail light bar,
silver BBS rims, custom power steering cooler (one that doesn't dump ATF constantly), new negative lead cable, no more third or fourth gear
(1977-Present) 1977 Chevrolet Corvette (81k) Silver
(12/01/2011-Present) 2005 Subaru Outback 2.5i Limited 5MT (97k)
I have a bad feeling about this.
-Obi Wan Kenobi
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  #94  
Old 09-19-2010, 05:33 PM
oab_au oab_au is offline
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Re: Lets talk about this annoying hot start problem...

Quote:
Originally Posted by Manarius View Post
I'm just interesting in seeing whether or not having the cruise control on and putting it in neutral will mess up the car. If the resistance is low enough, it shouldn't be an issue as in the post I quoted, right?
Yes mate thats right. The lower resistance the more current it takes to turn the relay on. I don't know exactly what current the cruise control flows to turn it off, but that 30 amp Bosch will do the job just fine.

Harvey.
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Tell it like it is!

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97 Liberty GX Auto sedan. 320,000Kls.
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