Menu

funny pump sounding noise

by Doug
(Oregon)

After any start up when first roll off there is a sound like a pump coming up to pressure. I never hear it again until I shut the car off and restart it and roll away again.

Comments for funny pump sounding noise

Average Rating starstarstarstarstar

Click here to add your own comments

Jun 06, 2013
Rating
starstarstarstarstar 		"funny pump noise"
by: 2weelz

I didn't see where you supplied the year, but, I'm willing to bet a good chunk that what you're hearing is the anti-lock brake system doing its normal self test. Its a muffled "whir" that comes up and then quickly shuts down. My '89 C4 has the anti-lock system right behind the driver's seat beneath the driver's side storage box (on the floor behind the seat). If you lift the lid and pull the plastic box up and out, then move the insulation aside, you'll see the anti-lock brake components right there. The system is programmed to do a self test, where the modulator pump runs for a couple of seconds, after every start up and the vehicle begins to roll (sensed by the wheel speed sensors...one on each wheel). If you DON'T hear that sound, it's time to be concerned...!

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to C4 Corvette Ask!.





















Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.
Chris Trautman @ Corvette Assembly Plant 2019

About Us: Corvette Web Central | Owner Bio: Chris Trautman

Established in 2008 by Chris Trautman, Corvette Web Central quickly grew into one of the top leading Corvette enthusiast websites globally. 

"This website is a passion of mine, just as much as being a Corvette owner," says Chris.  He was frustrated trying to find information on the internet about Corvettes which was was not biased or influenced somehow. 

He has owned three Corvettes over the last twenty years and does not plan to stop owning one anytime soon.

Note: Some links on this page are part of our affiliate program and provide a small portion of proceeds to fund the administrative costs and to fund more product reviews.  We are not paid to perform the reviews or are we given any products for free.  

You might like these