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Re: Base Boost & Cleaning Solenoid Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 18 Jan 2001 15:10:24
In Reply to: Base Boost & Cleaning Solenoid, Gary C., Thu, 18 Jan 2001 14:05:45 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Base boost is approximately half-way into the yellow (orange in some cars) band. Without an actual pressure gauge, there is no better way to do it.
You can see if your boost gauge is somewhat accurate. Turn off the car and look at the needle, then watch the weather forcast that day. The gap between the top of the white and the bottom of the yellow should be a 'standard day' atmospheric pressure. So if the barometer is 29.92 inches, the needle will be right in the middle of that gap. High pressure area over your house? Then the needle will be on the upper edge of that gap. Low pressure? THe needle will be at the low side of the gap. The needle won't make it into the white unless there is a hurricane sitting on top of you. If the needle is in the yellow or white when the car is off, the gauge is off. There's nothing I know about to fix the gauge, but if the needle is right, then you can assume you have a decent idea of boost.
As said, base boost is half-way into the yellow (orange). Full boost in a non-modified car will have the needle touch the red under ideal conditions. It's pretty normal for the needle to touch the red, then drop back down to about 3/4. It's hard to keep full boost - you need to have the engine under load. Try accelerating hard up a long hill, and see if you can keep the needle up near the red.
Remember - Normally, you can get full boost, which is just at the red. If the APC detects knock, it de-energizes the solenoid, and you have 'base' boost, about half-yellow. Once the knock goes away, the solenoid is re-energized, and full boost is allowed. The APC can turn the solenoid on and off and get a max boost somewhere in the middle.
To clean the solenoid, remove and mark the hoses, and pull off the electrical connector. Then spray the crap out of it with contact cleaner. I prefer carb cleaner. Just be careful, as the stuff is flammable.
, Thu, 18 Jan 2001 15:10:24 <-- Viewing This Message, Fri, 19 Jan 2001 09:02:44
, Thu, 18 Jan 2001 15:18:12
, Thu, 18 Jan 2001 19:22:37, Thu, 18 Jan 2001 21:14:37, Thu, 18 Jan 2001 21:54:24, Fri, 19 Jan 2001 00:29:38, Thu, 18 Jan 2001 15:07:18
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