bad mpgs, engine hesitation at 3-4k rpm

2005 CHRYSLER TOWN AND COUNTRY
220,000 MILES • 3.8L • 6 CYL • FWD • AUTOMATIC
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DAN.BURNS1896
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Engine hesitates (in drive and in park) between 3-4k rpm and will not rev above 4k rpm. Usually equates to hesitation getting above about 45 mph. Noticed significant loss in gas mileage. Idles smooth, no other noticeable adverse engine issues and NO check engine light. No codes displayed. MAP Sensor??
Jul 22, 2016 at 8:59 AM
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HMAC300
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check fuel pressure with a gauge auto parts rent it . then check for a vacuum leak
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Jul 22, 2016 at 9:29 AM
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DAN.BURNS1896
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Thanks. I've been meaning to change the fuel pump assembly since the gas gauge doesn't work ( one combo assembly) (very big pain in @$$ on T&C). But low fuel pressure could affect engine at a certain rpm range instead of full range??
Jul 22, 2016 at 10:31 AM
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HMAC300
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  • 48,601 POSTS
  • ASE Certified Mechanic
yes so cold other stuff but you said no codes you should really have it scanned for codes again to make sure there are none. auto parts does that for free
Jul 22, 2016 at 11:57 AM
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