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 Post subject: Terrible mileage & no power
PostPosted: Tue Aug 03, 2021 7:00 pm 
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Joined: Mon Mar 07, 2011 9:36 pm
Posts: 71
Location: Winnipeg, Manitoba, Canada
My 2005 CRD is getting under 20mpg and that’s an imperial gallon. It’s lacks power also. I recently installed a boost gauge and the boost is erratic while on cruise control on the highway. It’s bounces around from 9 to 15 psi on flat ground with no change in wind, etc. Also noticing it starts running hotter than usual under low stress conditions. There are no codes on the computer. Any input would be very much appreciated.

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2005 Liberty Sport CRD

GDE HOT Tune
GDE TCM
EH Mod
Euro T.C.
3" straight exhaust w/cat delete
Cone air filter
Ome lift springs
Bilstein shocks & struts


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 Post subject: Re: Terrible mileage & no power
PostPosted: Wed Aug 04, 2021 11:58 am 
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Joined: Sat Oct 01, 2016 8:24 pm
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How is the boost gauge installed? What/how are you measuring?


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 Post subject: Re: Terrible mileage & no power
PostPosted: Wed Aug 04, 2021 2:44 pm 
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Joined: Tue Dec 16, 2014 9:33 pm
Posts: 1121
Location: Jackson,TN
Might want to try cleaning map sensor . ? problem with vacuum or a sensor? You might benefit from this thread and do the actuator arms and bypass tests etc
.viewtopic.php?f=5&t=90033

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05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC
06 Bla Lim, GDE Eco, Destination AT 245/75/17, 151K, H TC
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All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden


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 Post subject: Re: Terrible mileage & no power
PostPosted: Wed Aug 04, 2021 7:10 pm 
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Joined: Sat Oct 13, 2018 10:09 pm
Posts: 365
Location: Australia
If your boost gauge is the mechanical type, you may need to dampen it. By having oil in the tube, the pressure pulses that occur when valves open dont cause the nedle to flick. Most, but not all, gauges have built in dampening.

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 Post subject: Re: Terrible mileage & no power
PostPosted: Thu Aug 05, 2021 8:09 am 
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Joined: Sun Jun 27, 2021 9:32 am
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I'd be checking the following

a. MAP sensor - be very very careful pulling it - does it jump around like the boost gauge
b. hoses are not split or leaking
c. fuel filter - clean and free of air
d. EGR is not playing up - pull the MAF sensor - you will get fault code but otherwise disables the EGT
e. brakes are not dragging
f. ensure its going into the correct gear - specially 5th gear
g. electrical problem - good earths


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 Post subject: Re: Terrible mileage & no power
PostPosted: Thu Aug 05, 2021 8:30 am 
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LOST Newbie

Joined: Mon Mar 07, 2011 9:36 pm
Posts: 71
Location: Winnipeg, Manitoba, Canada
The boost gauge is plumbed to a factory port on the intake manifold. I will post a photo later. I checked my map sensor last week and it was very clean. I have the egr delete mod installed.

I double checked and my boost gauge line is off the charge air cooler tube on the manifold side of the block.

_________________
2005 Liberty Sport CRD

GDE HOT Tune
GDE TCM
EH Mod
Euro T.C.
3" straight exhaust w/cat delete
Cone air filter
Ome lift springs
Bilstein shocks & struts


Last edited by wfd1350 on Thu Aug 05, 2021 1:07 pm, edited 1 time in total.

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 Post subject: Re: Terrible mileage & no power
PostPosted: Thu Aug 05, 2021 12:05 pm 
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Joined: Sat Aug 24, 2013 11:36 pm
Posts: 6209
Location: Central GA
OzzyDaveO wrote:
I'd be checking the following

a. MAP sensor - be very very careful pulling it - does it jump around like the boost gauge
b. hoses are not split or leaking
c. fuel filter - clean and free of air
d. EGR is not playing up - pull the MAF sensor - you will get fault code but otherwise disables the EGT (Disconnecting the MAF will not help if the EGR valve is leaking by or stuck party open allowing boost to be lost and escape backwards through it into the exhaust manifold. Best course of action if the EGR is still in service is to install a blank off plate {picture below} in the exhaust feed tube to the EGR valve. That insures that NO boost is lost through the EGR system. Of course the best option is to totally remove the whole crappy EGR system for good.)
e. brakes are not dragging
f. ensure its going into the correct gear - specially 5th gear
g. electrical problem - good earths


Image

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Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
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Carter Intank-pmp
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