 MPS: tested, is it good? |
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| jhadler |
 Apr 7 2006, 12:13 AM
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#1
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Long term tinkerer...  Group: Members Posts: 1,879 Joined: 7-April 03 From: Lyons, CO Member No.: 529  |
To all you uber experts:
I dug up three MPS's from the crate and tested them 1) 043 MPS. Lost 6 inches Hg over 5 minutes. Tested at 91 and 338 ohms. 2) 049 MPS. Lost 4 inches Hg over 5 minutes. Tested at 89.7 and 328 ohms. 3) 043 MPS. Would not pull any vacuum, toast. ... So, is #1 any good? If not, can I use the 049 on a 2.0L? Thanks! -Josh2 |
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| JeffBowlsby |
Apr 7 2006, 06:22 AM
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#2
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 8,907 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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#1 and #2 are failing, but probably serviceable, the leaks are not that bad. A good MPS is rock solid, no vacuum loss at 15 inhg forever. Because the MPS diaphragm is held by intake manifold vacuum pulses, it never sees a constant steady vacuum in reality. An MPS with a slight vacuum leak will work fine, sometimes for several years, before it does not adequately function. They fail going too rich.
#3 is a goner. |
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Posts in this topic
jhadler MPS: tested, is it good? Apr 7 2006, 12:13 AM
bd1308 I would think that not holding all of the vaccuum ... Apr 7 2006, 06:01 AM Bleyseng http://www.914world.com/bbs2/h... Apr 7 2006, 07:47 AM jhadler Thanks!
I plan on converting the car to Megas... Apr 7 2006, 08:49 AM jhadler If the leak is slow, I would think that the longer... Apr 7 2006, 03:35 PM Bleyseng NO
At idle the engine vacuum (15hg) will overcome... Apr 7 2006, 05:40 PM
jhadler <... Apr 7 2006, 11:55 PM |
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