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CRoe
Samba Member
Joined: July 14, 2006
Posts: 126
Location: Gadsden, Alabama
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 Posted: Thu Apr 22, 2010 5:14 pm Post subject: Coil Testing |
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I just finished installing a new Pertronix igniter and Bosch Blue coil in my 65 Beetle with a 1776. I'm not 100% sure my old coil was bad but I am not sure how to test it. Should I use an ohm meter to check across the + and - poles? If so, what reading should I see if it is good?
Clyde
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I'm not afraid of the Devil, I married his sister!!!
63 Ghia Vert
68 Ghia Hardtop
74 Dasher Wagon
61 Baja
68 Baja
71 Super Beetle
65 Beetle --Current ride |
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pkdmslf
Samba Member
Joined: December 13, 2009
Posts: 111
Location: Mesa, Aridzona
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| Posted: Thu Apr 22, 2010 5:34 pm Post subject: |
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I knew I saved this for something:
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BugMan114
Samba Member
Joined: March 22, 2007
Posts: 3744
Location: Ellenwood, GA
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| Posted: Thu Apr 22, 2010 6:05 pm Post subject: |
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so when they go bad, i imagine that the OHMS reading would prolly be lot higher, correct?
I used to have a turbo on my bug, and on the tail pipe, i had ran a flame thrower. basically just mounted a 2nd blue coil next to the one already there. that one just had a plug wire running from the coil, to a sparkplug in the exhaust. and a button in the circuit. anyhoo, when i got the turbo off, i kept the coil on the shroud. and sure enough, one day while driving home, it started to sputter, and stall out. pulled over, and didn't see anything out of the ordinary. so i decided to swap the connections to the 2nd coil, and viola, lol. ran perfect.
point is, it never hurts to carry (or install) a second coil for just such an emergency. and i was over an hour away from home, lol.
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1974 Super Beetle: Custom resto in progress
1972 Super Beetle: Daily Driver
1971 Std. Beetle w/ 1929 Mercedes Benz Gazelle kit
1960 Baja Bug
1969 Baja Bug
Sand Rail- Homemade
Sand Rail- FUBAR
Aircooled Airheads
Why the hell do they call it a gland nut. its obviously a big fat bolt!!! |
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CRoe
Samba Member
Joined: July 14, 2006
Posts: 126
Location: Gadsden, Alabama
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| Posted: Thu Apr 22, 2010 6:16 pm Post subject: Coil Testing |
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Thanks to pkdmslf and all for your replies. I think the diagram with pics that pkdmslf will really help (my memory really sucks). Thanks again.
Clyde
_________________
I'm not afraid of the Devil, I married his sister!!!
63 Ghia Vert
68 Ghia Hardtop
74 Dasher Wagon
61 Baja
68 Baja
71 Super Beetle
65 Beetle --Current ride |
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RailBoy
Samba Member
Joined: March 10, 2008
Posts: 2904
Location: Virginia
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| Posted: Thu Apr 22, 2010 6:47 pm Post subject: Coil Testing |
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After seeing this forum I look into some other forums on the ohms that a good Bosch Blue Coil should have...
Thing is I saw mixed info.. So does anyone have more spacific numbers on the Bosch Blue Coil? I saw a range from 9,000ohms-11,000ohms being in great shape.. Are these numbers accurate? Wondering if anyone knows? Just want to test mine out to see what's up it... RB |
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1972super2110
Samba Member
Joined: April 17, 2007
Posts: 376
Location: Idaho
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| Posted: Thu Apr 22, 2010 7:10 pm Post subject: |
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You guys rock! Thanks been looking since yesterday for a post like this looks like I was a little premature!
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1972 Super Beetle owned since 2005
1969 Riviera Camper Bought outta my own field 2024
https://www.thesamba.com/vw/forum/viewtopic.php?p=10191353#10191353
| OldSchoolVW's wrote: |
Looks like the work of a younger, more agile jackass to me.  |
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Augiedoggy
Samba Member
Joined: August 25, 2008
Posts: 463
Location: western ny
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| Posted: Mon Apr 26, 2010 5:55 am Post subject: Re: Coil Testing |
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| RailBoy wrote: |
After seeing this forum I look into some other forums on the ohms that a good Bosch Blue Coil should have...
Thing is I saw mixed info.. So does anyone have more spacific numbers on the Bosch Blue Coil? I saw a range from 9,000ohms-11,000ohms being in great shape.. Are these numbers accurate? Wondering if anyone knows? Just want to test mine out to see what's up it... RB |
theres a primary and secondary side of coil ...ohms are much higher for one than the other... as long as you have the correct ballast resistor type coil for points (or replacement) your coil should measure somewhere around 2 -3 ohms for the smaller side (cant remember if its the secondary for sure or not...) the other higher one is probably the most important in this case though.
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1970 vw beetle chassied mercedes ssk/gazelle kitcar SOLD
1974 Corvette restorod
1966 Bahama Blue Bug
1964 yellow bug (girlfriends ride) |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20800
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Mon Apr 26, 2010 7:27 am Post subject: |
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Check out the thread on electronic ignition modules reliability, lots on information /misinformation about coils there.....
http://www.thesamba.com/vw/forum/viewtopic.php?t=409104&highlight=pertronix
Some blue coil "facts"....
http://www.ratwell.com/technical/BlueCoil.html
Dale
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“Fear The Government That Wants To Take Your Guns"
"Kellison Sand Piper Roadster" For Street & Show.
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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