tandem valve control
02-27-2013, 06:51 AM
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Re: tandem valve control
It is sort of like a choke, but designed more with fuel efficiency in mind.
There are 2 sets of butterflies in the DPFI throttle body.
The lower one is your throttle plate for acceleration.
The upper one is for the tandem function. It isn't a full butterfly as it has a cut out to allow air through. It redirects air around the injector for a better mixture rather than restricting air like a choke does.
There are 2 sets of butterflies in the DPFI throttle body.
The lower one is your throttle plate for acceleration.
The upper one is for the tandem function. It isn't a full butterfly as it has a cut out to allow air through. It redirects air around the injector for a better mixture rather than restricting air like a choke does.
03-01-2013, 03:50 AM
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Re: tandem valve control
It caused my car to surge when I tried to accerate. I zipped tied it open until I can get to the troubleshooting this weekend. Will his cause any problems?
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rockwilda
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02-23-2002 09:43 AM