Q: I went to AAmco because my engine light was on! They did a diagnostic and came up with 2 codes. intake runner position sensor cir

asked by on

Do you think replacing the manifold intake assembly will resolve my problem. Aamco replaced the intake runner control but the engine light still remained on.. Aamco said I needed to replace computer brain so I took it to Meineke to get an 2nd opinion, they did a diagnostic test and said it needed the whole intake manifold assembly!!

My car has 102331 miles.
My car has a manual transmission.

Diagnostic Trouble Codes, such as the two codes that were retrieved at the first shop, cannot be used to "directly" condemn parts. Rather, these Codes are merely clues that are used to inform an actual diagnostic. But, short of an actual diagnostic, nothing can be intelligently concluded about which part or component has failed. In the case of the Intake Manifold Runner Control (IMRC) system, there are quite a few components that have to be directly tested, and ruled in or out, before any repair decision is made. PCM’s rarely fail (computer brain you are referring to) by the way. As far as the second shop, you should request tangible evidence of a faulty part, that is actual documentation and a credible explanation, prior to letting them do anything. Just to give you an idea of the number of possible causes of the check engine light coming on, if there is an IMRC fault, here is just a partial list of possible underlying causes, all of which have to be looked at: IMRC solenoid that is defective, IMRC solenoid wiring that has shorts, breaks, or is frayed, IMRC solenoid circuitry that has shorted or is open, IMRC solenoid connector that is corroded, IMRC butterfly valve plate screws that are loose or broken, IMRC butterfly valve plates that are broken, IMRC butterfly valves plates that have disconnected from the IMRC actuator, Vacuum control solenoid vacuum filter that is clogged, Debris in the vacuum control solenoid, Vacuum lines that are disconnected or broken, Carbon buildup on the IMRC butterfly valve plates, Exhaust gas recirculation (EGR) valve trouble codes that have been stored by the PCM, MAF sensor trouble codes that have been stored by the PCM, and BARO sensor trouble codes that have been stored by the PCM.


If you want an authoritative diagnostic, and an explanation of exactly what has failed and caused the check engine light to remain on in your car, please request an IMRC system diagnostic and the responding certified mechanic will get this problem resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. I went to AAmco because my engine light was on! They did a diagnostic and came up with 2 codes. intake runner position sensor cir

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: Q: Oil leaking from car

Hello, it sounds like you may have a gasket or seal leaking on your car. Smoke in the exhaust could indicate 2 things; you're burning oil or burning coolant. If you're burning oil that usually means your valve seals and...

Q: Truck is running rough engine light. Keep call code

The catalyst may give off a rotten egg smell if you are running rich from an engine misfire. You will need to have the two cylinders that are misfiring diagnosed to see if they have low compression or the valves...

Q: Q: Why is my engine knocking?

A loud knocking noise coming from the engine can be any of several issues. Having to put 5 quarts of oil in the engine means that the engine was completely empty, basically. The engine oil's main purpose is lubrication, and...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...