Air Injection Solenoids and why you get a CEL
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I'll let you guys know what they say, if anything at all...
-Noah
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Adam (or as we're calling him today, Dr. Adam in his lab coat, lol)...working on yet another Air Injection Solenoid issue vehicle. This time its a 2008 STi with only 65k miles on the car. Darn shame SOA still says no issues with these :-(
-Noah
-Noah
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Would this cause the hose from the valve to the pump burn? or push junk back to the air pump causing the air pump to fail?
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I should say as well, in my opinion its plausible perhaps but I personally have yet to see it melt any piping attached or take out a smog pump itself.
But that's just what we've seen thus far.
-Noah
But that's just what we've seen thus far.
-Noah
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From looking at the inlet port which has become the new outlet port it has junk in there. That is bad. that stuff getting in the pump would tear up the blades, bring the cost of repair even more in the long run.
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-Noah
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2006 WRX with 63k miles on it, in for its 60k service this AM. Upon pulling it into the shop noticed it has a CEL, so we pulled the code(s)....ALL 6 of them pertaining to Air Injection Solenoids being bad.
How can SOA say this is not an issue?
-Noah
How can SOA say this is not an issue?
-Noah
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Furthermore, LIC provided pictoral evidence of the problem and even offered a probable failure mode based on experience and science.
Statements were made contrary to this evidence.
Having a mechanical engineering/science background, I'm a gearhead that likes to perform experiments. Most experiments end in failure/proving one's hypothesis wrong.
This was an opportunity to use science to not only help out the Subaru community, but to demonstrate what few here have probably never thought about or even seen first hand.
If a statment is made that AIR valves stuck in the open position are allowing fresh air to be introduced into the exhaust tract during cruise conditions, one would expect to see:
1. the exhaust system to be under vacuum during cruise conditions.
2. The AFR to go lean, STFT to become positive during cruise conditions.
Well, I forgot to connect the car to a diag scanner to show the STFT during cruise, but I'm willing to use the same car today and recreate the experiment showing both data streams.
