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08-08-2006, 07:42 AM
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#1
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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A/F gauge problem
i didnt know which forum this should be under, so ill just post it here. Just got an autometer A/F gauge from another forum. went and hooked it up, having a bit of a problem...gauge reads full lean, and the car will start running like it has a vacuum line pulled off and will stall. If i unhook the gauge again, it runs perfect. I can leave the signal wire connected and it runs fine, but as soon as a connect the power wire, it starts to run like ****. any ideas?
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Matt
B18B1 FTW
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08-08-2006, 08:52 AM
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#2
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Are you 100% sure that you have it wired up correctly?
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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08-08-2006, 09:15 AM
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#3
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
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Originally Posted by Tru2Chevy
Are you 100% sure that you have it wired up correctly?
- Justin
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I agree. It sounds like you are sending power over the signal wire or something like that.
Is this in your GP? Are you using the A/F pigtail?
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08-08-2006, 09:54 AM
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#4
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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99.9% sure its wired correctly, red wire to positive, black to ground, and the signal wire to the purple wire off the O2 sensor. not using the pigtail, used a scotch connector to connect to the wire so i didnt have to cut it.
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Matt
B18B1 FTW
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08-08-2006, 10:01 AM
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#5
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Do you have a good ground (i.e is it grounded to something unpainted, with a star washer, etc)?
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08-08-2006, 10:32 AM
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#6
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
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Originally Posted by WildBillyT
Do you have a good ground (i.e is it grounded to something unpainted, with a star washer, etc)?
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yep. i even tried taking it out of the pod and connecting it directly to the battery, same thing happens. maybe something came loose inside the gauge itself and is shorting on the signal wire?
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Matt
B18B1 FTW
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08-08-2006, 10:56 AM
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#7
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Join Date: Mar 2006
Location: sayreville nj
Posts: 2,175
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the gauge is shot,but just to be sure unhook the signal wire fromth eo2 sensor.and prob the wire with a volt meter.if there is voltage at the signal wire the gauge is no good.
i had this problem with myold a/f gauge.took me a whole dam day to figure it out.and probably wouldnt have it if wasnt for kasey lol
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#1 1989 RS - 3.0L V6 11.0-1 CR, LIGHTENED CRANK,J.E FORGED PISTONS, CUSTOM 280/284 .575/.575 116LSA ROLLER CAM, PORTED HEADS, PORTED INTAKE,CUSTOM TURBO KIT W/ BW S475,AW INTERCOOLER,METHANOL INJECTION, TCI STREETFIGHTER 700R4 W/ TCI 4,500 STALL,TWIN WALBORO 255'S & 83# INJECTORS
268 rwhp & 367.6 ftlbs @ 10 psi 3.1l
12.30's @ 112 3.1L @ 9 psi
??.?? @ ???? 3.0L @ 18 PSI
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08-08-2006, 02:50 PM
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#8
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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just tested it with a multimeter. 29mV on the signal wire, i guess thats enough to throw it off. is it possible to take these gauges apart? i could send it back to autometer for repair but i didnt pay much for the gauge to begin with, so its not really worth it
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Matt
B18B1 FTW
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08-08-2006, 02:53 PM
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#9
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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I've got a new sport comp gauge, cup, and pigtail that I could part with if you are interested... I was going to put it in my GTP but I've got no room. None of the stuff has been used, just taken out of the packaging.
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08-08-2006, 03:04 PM
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#10
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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how much ya want for it? im cheap  and i have various GP parts you might want in trade too
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Matt
B18B1 FTW
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08-08-2006, 07:48 PM
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#11
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Well, the original prices of the stuff are:
From Summit:
Autometer Sport Comp 2 1/16 AF gauge- 51.88
Autometer 2 1/16 gauge cup - 12.95
From ZZP:
Casper's AF gauge pigtail - 15.00
So the original prices total 79.83 without shipping.
Everything is brand new but out of package. You can have it all for $60 shipped or if you've got other GP parts, let me know what you have. I may be intrested.
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08-09-2006, 11:13 AM
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#12
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Matt, did you try letting the person you bought it from know that the gauge is messed up? You might have an honest seller that will give your money back....
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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08-09-2006, 11:16 AM
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#13
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
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Originally Posted by Tru2Chevy
Matt, did you try letting the person you bought it from know that the gauge is messed up? You might have an honest seller that will give your money back....
- Justin
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yeah i sent him a PM on clubgp, still waiting for one back
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Matt
B18B1 FTW
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