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Po171 1997 toy 4 runner runs good reset light but comes back…

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po171 1997 toy 4 runner...
po171 1997 toy 4 runner runs good reset light but comes back one found no vacuum leaks
Submitted: 2 years ago.Category: Toyota
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Answered in 2 hours by:
1/19/2016
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 2 years ago
Ted Ritter
Ted Ritter, Toyota Master Tech
Category: Toyota
Satisfied Customers: 4,780
Experience: Toyota Master Tech, ASE Certified
Verified

hello, thanks for posting

How does the engine idle? How long does it take for the code to come back?

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