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Yoda
New User
Oct 1, 2009, 6:28 PM
Post #1 of 3
(3950 views)
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Excessive hydrocarbons
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Have a spotless 1995 Ford Taurus SHO with 3.2l (Yamaha) mill and 300,000km. (Yes, I know; lose it) Love the car, have had it 12 yrs. Won't pass provincial emissions test (3 times now) because of hydrocarbon pollution. Okay, in layman's terms: I was told that the EGR switch works only when grounded out. Chap told me that either the wire from the switch to the computer is toast or the computer is malfunctioning at terminal 33 (I think). I'd like to get a second opinion before I electrocute myself or send the SHO to the crusher. Help anyone? --Yoda
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Sidom
Veteran
/ Moderator
Oct 1, 2009, 7:05 PM
Post #2 of 3
(3945 views)
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Re: Excessive hydrocarbons
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Well it seem like there is a bit of the story missing. HCs are raw/unburned fuel so I'm curious how you got to the EGR system.
It would probably help to tell how the car is running, anything you have done to it recently, if the check engine light is on and what the codes are, if any. Also if you could list all the gas readings @ idle & cruise.
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Yoda
New User
Oct 1, 2009, 7:34 PM
Post #3 of 3
(3944 views)
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Re: Excessive hydrocarbons
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Well, boyo, part of the story is indeed missing. First of all, thanks for replying so promptly. But if, as you correctly point out, HCs are raw, unburned fuel, that probably explains why my SHO runs so well. There are probably no burned gases being fed back into the engine. Anyway, much of this stuff is Greek to me. I'm from pre-1977 times. Long ago, I disconnected my Check Engine light because it kept coming on even though there was no engine problem --the culprit was a tranny shudder which not even Ford could detect. Why don't they say "Check Drivetrain"? And I've had enough of Ford quoting codes, then performing useless but costly ($1500) "repairs." They replaced oxygen sensors, an EGR valve, and a MAP sensor because that's what the codes called for. To fix a tranny shudder? (This was before I found out it was the tranny.) And a tranny shop was going to replace the lockup solenoid for a mere $2200. In the end, members of SHOtimes told me to replace my battery cables.... $60 the cables cost me. Did I say I don't fully trust diagnostic equipment or its handlers? But I appreciate your input. Thanks again.--Yoda, The Great White North.
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