Q: Replaced coil 3 per code, code still appears, auto purrs in the morning but feels like it starts sucking air after driving 30min

asked by on

Replaced coil 3 per code, code still appears, auto purrs in the morning but feels like it starts sucking air after driving 30min. Will run like a gym after sitting two hours then same as above. Would the evac pump have anything to do with air intake?

My car has 226000 miles.
My car has an automatic transmission.

Codes generally cannot be used to condemn specific parts. To illustrate, you could have a circumstance where the wiring to a coil is simply faulty and the fault in the wiring causes the part (in this case, possibly a coil) to malfunction. But, the engine computer can’t distinguish between a fault in the wiring "to" the part versus a fault "within" the part, again in this case the coil. For this reason, trouble codes do not constitute a diagnostic or actual pinpoint identification of the mechanical or electrical fault. All parts must be directly and thoroughly tested prior to even considering condemning them. If you are referring to the evaporative emissions system, there is some intertie with the intake but that is not likely related to your issue. If your issue is misfiring related (which has many non-electrical causes), or an electrical issue alone in the ignition circuit, that issue will have to be properly and accurately diagnosed. Inasmuch as a code has set, my suggestion is just request a check engine light diagnostic and the mechanic will resolve this promptly for you and all on a mobile basis right at your location. If you have further questions or concerns as you decide what to do, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

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. Replaced coil 3 per code, code still appears, auto purrs in the morning but feels like it starts sucking air after driving 30min

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: The vehicle will start and drive, but will not go past 2500 rpm.

Hello. I would recommend having the camshaft seal inspected by a qualified professional. This camshaft seal often goes bad on these 2.4 liter engines in the PT Cruiser. When the oil leaks onto the camshaft position sensor, it causes the...

Q: My 2010 BMW 535 xDrive (n54) is making a ticking noise

It is not uncommon for BMW's to tick, but there are solutions that are helpful. Keeping the revs up (instead of lugging around like it was a big V8) is one way to do this. Keeping it at about 2000...

Q: 2007 bmw 335i serpentine belt keeps breaking

Hi There, It sounds like you may have a tensioner pulley that may have a worn out bearing that may be putting additional stress on the belt as it turns. The other possibility may be that the tensioner pulley may...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.