Heat blows from the floor intermittently at any temp setting. A/C blows hot under moderate and hard acceleration. A/C only works on max but compressor engages in both settings and defrost. I have no cold defrost only hot at any temp setting. Check engine light is on , codes are all related to EGR , replaced DPFE sensor 2yrs ago (melted) and both hoses were replaced and they appear OK.( code cleared at that time and didnt return till a few months ago ) EGR valve may be culprit but believe to be vacuum leak and blend door combo problem could all this just be vacuum leak? Vacuum is good at flow control valve on heater hoses (at idle hard to check under engine load)
Flow control valve closes when max ac is selected it opens in any other position except off ( again at idle) valve remains open at any temp setting also.
Could someone give me some ideas of the easiest way to remedy this problem? Currently I ziptie the flow control valve shut in summer and let it open in winter. I live in Florida with only two seasons HOT! and Warm. Thankyou for any suggestions
Flow control valve closes when max ac is selected it opens in any other position except off ( again at idle) valve remains open at any temp setting also.
Could someone give me some ideas of the easiest way to remedy this problem? Currently I ziptie the flow control valve shut in summer and let it open in winter. I live in Florida with only two seasons HOT! and Warm. Thankyou for any suggestions