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Blow air through it to check if it's working....
Posted by Anders Denmark [Email] (more from Anders Denmark) on Sat, 13 Aug 2005 11:30:25
In Reply to: Re: APC solenoid ?, caajun, Thu, 11 Aug 2005 18:11:16
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listen for a click from the solenoid valve when the key is turned on. The APC should send power to the solenoid and it has a permanent ground, so with the key on, one audible click should come from it. If not, check the fuses and then the wiring to the APC solenoid. One wire should have 12V with the key on and the other ground. Check each one for shorting to ground or power. It is common for them to lose their insulation and keep the solenoid from energizing. If the solenoid clicks, verify that it is actually opening its passageways, remove the hoses coming from it. You should be able to blow through the hose going to the center nipple on the solenoid ( marked C for Charge) and feel the air come out the left nipple( marked R for Return) With the solenoid closed ( key off or solenoid unplugged), this passage should be closed, no air between C and R. But you should have air flowing between C and W (Wastegate, right nipple) Check the routing of the hoses, R goes to the nipple on the intake tube, C goes to the nipple on the turbo's compressor, W goes to the wastegate actuator, below the turbo.
Courtesy of Tom Townsend :
posted by 83.72.11...
http://townsendimports.com/Web/turbo_folder/baseboostdia.htm
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