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Posted

In my newly acquired 1989 coupe, every couple minutes I hear a sound coming from (what I think is) behind the CRT. It sounds like a pumping sound (or a motor) that lasts for about 5-10 seconds then stops. I've eliminated the radio/radio antenna and I don't think its the ABS (which appears to work fine). The AC if off (so it shouldn't be the compressor trying to engage; although I know it's low on freon). Anyone have any ideas? Thanks.

Guest Mc_Reatta
Posted

May be the mix door motor in the HVAC programmer adjusting to temp changes. Behind glovebox, but the door is closer to the CRT location.

Posted

turn it to the run (not started) hit the brake a couple times and listen for the sound. I would bet it is a noisey brake pump. If not with the engine off you can eliminate a few other items.

(I am assuming you heard the sound while the car was running)

Posted

Per Daniel's advice (thank you), I did as he instructed and the noise appear. So it seems to be the brake pump. What's next??? Could it be a relay/fuse issue? Does the pump need to be replaced (brakes work fine, no warning lights appear and I replaced the fluid last week). Can a new accumulator solve this problem?

Posted

From sunny 88 degree Maxatlan, probably your accumulator is leaking down too fast. The pump shouldn't randomly run. Go to Ronnies site and get a new accumulator.

Posted
From sunny 88 degree Maxatlan, probably your accumulator is leaking down too fast. The pump shouldn't randomly run. Go to Ronnies site and get a new accumulator.

Could probably use a new accumulator (couldn't hurt to try). I assume it's OK to use the car for short errands w/o causing (further) damage.

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