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Re: turbo-overpressure switch-disconnecting electrically possible? Posted by Justin VanAbrahams [Email] ![]() ![]() In Reply to: turbo-overpressure switch-disconnecting electrically possible?, matt, Fri, 19 Oct 2001 14:59:15 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Not at the APC box, but rather at the LH ECU. If you locate the system and fuel pump relays by the LH box, you'll see two brown&white wires each with a single-pin connector on the end. Disconnect them and connect them to each other and you'll have bypassed the overboost. As Mark J says, though, that won't stop the hissing - you'll still need to reroute the vacuum hoses.
In terms of real-world safety, this system is a backup in case the turbo wastegate fails more than anything, and honestly I've never seen this happen... however, it could and surely has. Obviously if you start getting ridiculous boost you'll know something is wrong and it'll be your responsibility to fix it quickly since the failsafe won't be working. The APC system fails to 5psi, however I suppose it may be possible through some combination of failures that the pressure transducer and knock sensor were to both fail together but the APC box still power the solenoid. Not sure how likely that is, but it could happen... :)
-Justin
posted by 64.168.1...
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