Q: Vacuum leak on the dash

asked by on

I've got a vacuum leak light on my dash. I've put a code scanner to tell me what part of the system isn’t up. My car also runs at times and won't go past 30 until I turn off my car and let the computer reset it and then it's normal.

Code scanners aren’t really going to help you with that. They can tell you if there’s a large leak, a small leak, and stuff like that. But, to really find where’ the leak is coming from, you will need a dealer-level scan tool and a smoke machine. These are complex tools. You’ll generally need a professional mechanic to find that type of leak.

If it won’t go past 30 miles per hour, then you’ve got some serious problem. If I were you, I would have that looked at relatively soon, because that is a pretty serious problem that you’ve got going on. Have a mechanic take a look with a dealer-level scanner and diagnose your car’s problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Vacuum leak on the dash

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Accelerating problem.

If you are having an acceleration problem then you should first have the computer diagnosed to see if the throttle position sensor is not stuck at idle position. The throttle is electronically controlled and will not allow acceleration if there...

Q: Coolant loss - 1991 Mercury Capri

Hello. When this occurs I usually do a block test first. Most of the time when there is a loss of coolant and there are no external leaks it is because there is a blown head gasket. A small leak...

Q: EGR valve stuck closed in 1988 F-150

Although it says the EGR valve is stuck closed, that's not going to make the car stall. You would get more nitrous oxides in the catalytic converter fluid. So, it doesn't affect that. The EGR valve problem is not the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.