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Wideband sensors have 5 wires, and with the calibration resistor, 7 wires total. You probably have a narrow band heated sensor if it has four wires.
John
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John Spina
FFR Spyder
EM Cobra
Bumble Bee
Everett Morrison built in 1995, 78,000 miles
FFR Spyder built in 2004
Both with Buick V6 turbo engines
11.40 @ 118 in the EM Cobra
11.99 @ 119 first time out in the Spyder
It's only funny until someone gets hurt.
Then it's friggin hilarious!
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