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Old 11-30-2007, 04:29 PM   #1
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Default Testing rear ELC air pump for 1999 SSEi

I had all new struts put in earlier this week (Monroe Sensatrac). I made sure the rears had the ELC option. The mechanic, said when he unplugged the old struts, no air came out, which led him to believe the air pump was not operational. The next day, I opened the trunk and turned on the pump and hear the relay click (under the carpet, between the rear seat and the passenger strut).

Is there anyway to test if the pump is working?
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Old 11-30-2007, 07:00 PM   #2
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If you push down on the shrader valve while the pump is on you should feel some air..

Also the Solenoid should be on the passenger side of the trunk not far from the Passenger Trunk strut tower... Look behind the carpeting.... If you unplug the diverter solenoid and turn on the Pump with the Infaltor it should pump up the struts

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Old 11-30-2007, 07:47 PM   #3
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Thanks! I'll give it a go and see what happens.
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Old 11-30-2007, 09:26 PM   #4
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If you feel like crawling underneath, find the yellow wire between the level switch and the compressor and ground it. This will cause the pump to turn on (don't flinch in surprise and bang you head) Do this with the key to "run". If it doesn't start, check if 12V is on the yellow wire
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Old 11-30-2007, 10:28 PM   #5
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Default Re: Testing rear ELC air pump for 1999 SSEi

Quote:
Originally Posted by 99SSEI
I had all new struts put in earlier this week (Monroe Sensatrac). I made sure the rears had the ELC option. The mechanic, said when he unplugged the old struts, no air came out, which led him to believe the air pump was not operational. The next day, I opened the trunk and turned on the pump and hear the relay click (under the carpet, between the rear seat and the passenger strut).

Is there anyway to test if the pump is working?
The pump should run to level the car about 30 seconds after the car is started or the key is turned to "on." On my Buicks it'* loud enough to be heard in the passenger compartment if the radio and blower aren't on. It'll run for about 4 seconds and shut off.
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Old 12-02-2007, 11:58 PM   #6
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On Friday, I depressed the shradder valve when the car was off and no air came out (should the car be on?). However, today, I started my car and was outside talking to a buddy when I heard the pump kick on (about 30 seconds after start). It was that buzzing sound for about 5 seconds. I will try depressing the shradder valve again tomorrow to see if it'* now working.
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Old 12-03-2007, 12:40 AM   #7
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That right there means that the system works

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Old 12-03-2007, 09:52 AM   #8
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Quote:
Originally Posted by 99SSEI
On Friday, I depressed the shradder valve when the car was off and no air came out (should the car be on?). However, today, I started my car and was outside talking to a buddy when I heard the pump kick on (about 30 seconds after start). It was that buzzing sound for about 5 seconds. I will try depressing the shradder valve again tomorrow to see if it'* now working.
That shows that the ELC part is working. If it doesn't work for the ancillary duty on Bonnevilles of providing an air pump with separate switching, that tells you which parts to troubleshoot.
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