Q: ok i replaced my upper intake manifold and ever since i did that i cant get rid of my motor idealing at a very high rpm

asked by on

ok i replaced my upper intake manifold and ever since i did that i cant get rid of my motor idealing at a very high rpm

My car has 182000 miles.
My car has an automatic transmission.

You may have a major vacuum leak from a poorly installed gasket or rubber seal. Check to make sure the throttle body seal is not out of position. The idle is high due to excessive amounts of air getting into the engine after the throttle body somewhere. You can use a rubber hose or similar tool to hear where the leak is located it so you can repair it. It may just be a loose hose from the brake booster to the intake. If you need help with this, feel free to contact a mechanic who can diagnose your high idle symptoms in person and fix the problem for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
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. ok i replaced my upper intake manifold and ever since i did that i cant get rid of my motor idealing at a very high rpm

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: engine overcooling; engine fan always on!

Hi Alex....yes, that sensor could be a possibility but there are other components in the circuit as well such as relays (that can stick on) and, although not as likely, there are possible wiring faults that can cause continuous power...

Q: Gas pedal

Hi There, It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the...

Q: Cheap sports car

The Miata is a good choice. They are fun to drive, there are many clubs for them and performance upgrades are readily available. Their small size makes them easy to work on; they are quite simple. The Eclipse is...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.