ELC problem - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-25-2006, 11:03 AM   #1
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Default ELC problem

Ok, if you don't know, i was rearended 2 weeks ago while driving home from work. Everything is fixable, except i have an immediate problem. My ELC pump isn't working. Just started to notice a couple days ago it looked lower than usual. Now it'* about 2-3 inches lower than normal. When i turn on the air hose part, the relays on the passenger side of the trunk click like it'* turning on but the pump isn't working at all. Is it possible the accident killed the pump from the jolt?
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Old 04-25-2006, 11:06 AM   #2
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More likely they pinched a wire somewhere and you aren't getting contact.
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Old 04-25-2006, 11:07 AM   #3
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First, we have to check if 12V is getting to the switch/compressor. On the compressor bracket is a wiring connection that goes forward to the elc switch. The red wire should be hot at all times. the brown wire should be hot when key is in run position. if this is the case, put the key in run, and put the yellow wire to ground. this will turn on the compressor. Do these tests, and report back.
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Old 04-25-2006, 11:11 AM   #4
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I'll check that when i wake up Sonoma. Just got home from work and it'* raining. I'll report back later, thnx for the way to test it.
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Old 04-27-2006, 10:15 PM   #5
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Ok, checked the pump and it'* bad. My new question is, does a 95 ELC pump work with my car?
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Old 04-28-2006, 12:01 AM   #6
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No, it is not. And the bracket is different as well.

You do NOT want to buy this from the dealer or GMPD. It'* going to be at LEAST 300 bucks. You want one from a member or a wrecker.
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Old 04-28-2006, 12:02 AM   #7
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Thats why i asked. I've had couple offered but i needed to know what fit. Thnx for the info Will.
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Old 04-29-2006, 08:36 PM   #8
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Or you can convert it to a manual, old style, air shock type system. You lose the ELC but the conversion is very easy. I know I will ruffle some feathers on this site but I never liked the ELC system, except to pump up tires. More than once it left me with a dead battery. Seemed to run way more often then needed. Maybe I had a leak. I disconnected the line in the trunk and connected it to the "T" connector under the trunk. This made the outlet in the trunk an inlet, I control the pressure as needed. Removing the pump made room for my FWI. Just food for thought.
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Old 04-29-2006, 08:45 PM   #9
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I like the tire pump too much Don. And besides, on my car the pump is behind the rear passenger tire. No problems for placement for me. Thnx for the input tho.
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Old 04-29-2006, 11:32 PM   #10
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Quote:
Originally Posted by Don Young
Or you can convert it to a manual, old style, air shock type system. You lose the ELC but the conversion is very easy. I know I will ruffle some feathers on this site but I never liked the ELC system, except to pump up tires. More than once it left me with a dead battery. Seemed to run way more often then needed. Maybe I had a leak. I disconnected the line in the trunk and connected it to the "T" connector under the trunk. This made the outlet in the trunk an inlet, I control the pressure as needed. Removing the pump made room for my FWI. Just food for thought.
that can't happen with the 96-99. The elc system can't come on with the vehicle off. all it can do off is purge air.
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