jbrentd's 2nd Chance CQ - Replacement 7A Going In

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Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby jbrentd » Tue Feb 12, 2019 11:16 pm

PRY4SNO wrote:Good tip about swapping those fuses and relays. Nice to know exactly which ones to target.

IIRC the FP relay trick people use supplies 12.5v all the time, so 11v should be sufficient.


I wanted to throw that in there in case I ever needed to refer back to it in the future. Also a good thing to know if your relay goes bad and you don’t have a spare.
jbrentd
 
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Location: Owasso, OK

Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby jbrentd » Sat Feb 16, 2019 5:36 pm

After installing the new speed sensor, I went to try and start it and wasn’t getting any spark. So I had to start over with some checks. Looks like I have another bad hall sensor. Tested it via the workshop manual method and off the car too. With 12v supplied to the sensor, not getting any voltage across terminals 1 & 2 of the hall sensor as the window passes by. Ugh! This this is wearing my patience.

https://youtu.be/b8FIcLgOKV0

Are new hall sensors available? If so, can they be installed by a DIYer?
jbrentd
 
Posts: 91
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Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby DE80q » Sat Feb 16, 2019 6:16 pm

They we're available as of last year. I haven't looked in a while though. As for installing it, you need to pull the shaft out to do it.
"If you can't find one, make one"

Dallastown, PA
1991 Audi 80 quattro (10vt project)
2007 Mitsubishi Raider(Dakota in disguise)
2014 Chevy traverse (It's what she wanted)
DE80q
 
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Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby jbrentd » Sat Feb 16, 2019 6:22 pm

I found this link to a DIY guide. Although it’s for an early AAN with the tuna can distributor, it says it applies to the 7A as well.

https://12v.org/urs/Replacement%20%20of%20the%20Hall%20Sender%20on%20a%207A3BAANDistributor.pdf
jbrentd
 
Posts: 91
Joined: Aug 29, 2018
Location: Owasso, OK

Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby DE80q » Sat Feb 16, 2019 6:37 pm

Looks correct to me. Now, finding the sensor.
"If you can't find one, make one"

Dallastown, PA
1991 Audi 80 quattro (10vt project)
2007 Mitsubishi Raider(Dakota in disguise)
2014 Chevy traverse (It's what she wanted)
DE80q
 
Posts: 2250
Joined: Mar 4, 2013
Location: York PA 17403

Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby jbrentd » Sat Feb 16, 2019 6:58 pm

According to this post on Facebook, Bosch 1237031296 can be used but it’s 180 degrees out. I guess due to its design. Looks different from the original where the plug and sensor are across from each other.

https://www.facebook.com/groups/SmallChassisAudi/permalink/1014206028777734/

https://www.amazon.com/dp/B001CO18IQ/ref=cm_sw_r_cp_api_i_5kkACbXSBP8ZC

I might give it a try.
jbrentd
 
Posts: 91
Joined: Aug 29, 2018
Location: Owasso, OK

Re: jbrentd's 2nd Chance CQ - Replacement 7A Going In

Postby jbrentd » Sun Feb 17, 2019 7:48 pm

I ordered that hall sensor and started disassembling the distributor today. The pin that holds the gear on the shaft can be a bitch to remove. The flared end has to be ground down before it can be punched out. And punching it out required some heat and heavy pounding.

Image

Image

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