Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** I can help. From what you described, it sounds like the EGR valve could be working when it should not. Has your Dad rechecked the EGR valve? Maybe the vacuum lines hooked up on the wrong ports?
One way to test if you have a faulty EGR valve is to spray brake cleaner around the intake and the valve at idle. If the engine rpm or sound changes at all, you have a leak. The leak would be dependent upon where you sprayed. Also, do you have a check engine light yet? You may have to drive it to make it come on faster.
Also, if you have a scan tool that can read data, you can observe the O2 sensor readings. If you do, I can tell you exactly what the numbers mean. The numbers will tell you what is happening in the combustion chambers.
Have you resolved the issue yet? If you have please rate me so I can close the ticket. Thanks