Gas Milage problem
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Cross-Country
Joined: Apr 2006
Posts: 57
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Gas Milage problem
Hey guys,
I started getting great gas milage after installing a banks ballbaring turbo in my Excurssion, I also installed a Edge tuner. It said it was getting 23.8 mpg, about 740 miles to tank. Now I only get about 600 miles to the tank.
I have these codes showing up now:
P0236 Turbo Boost Sensor A Circuit Performance
P0238 Turbo Boost Sensor A Circuit High Input
P1000 OBD 11 Monitor Checks Not Complete. More Driving Required
Are these factors linked?
I started getting great gas milage after installing a banks ballbaring turbo in my Excurssion, I also installed a Edge tuner. It said it was getting 23.8 mpg, about 740 miles to tank. Now I only get about 600 miles to the tank.
I have these codes showing up now:
P0236 Turbo Boost Sensor A Circuit Performance
P0238 Turbo Boost Sensor A Circuit High Input
P1000 OBD 11 Monitor Checks Not Complete. More Driving Required
Are these factors linked?
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
Sounds like you are having problems with the MAP sensor, its wiring, or it could just be a leaky boot.
Easiest and cheapest check to start with is check all 6 of the boots; 4 on the piping to and from the IC and the 2 on the intake Y
Yes a boost leak will effect mileage
Easiest and cheapest check to start with is check all 6 of the boots; 4 on the piping to and from the IC and the 2 on the intake Y
Yes a boost leak will effect mileage
Junior User
Joined: Mar 2004
Posts: 59
Likes: 0
First, if you installed a tuner and turbo so you probably got your foot in it to see proformance so your gas milage will be lower and 23 MPGs is very high. do the math to get a better feel for what is going on. Check all the boots (6) and make sure you are lined up on the hose clamp marks and the clamps are centered then tighten them down. Check the Y pipe collector at the side of the turbo towards the firewall. The exhaust donuts leak and you disturb that connection alot when taking off the turbo. That's were my leak was and It made a big difference when I replaced the donuts. Also check for the Green hole going into your intake befor the turbo and make sure this is snug.
Posting Guru
Joined: Jan 2006
Posts: 1,605
Likes: 1
From: Elkhorn, WI
you should do the fuel milage calculation by hand. my overhead console says i get 29mpg. you probably noticed a drop in milage because of the winter blend fuel. i get about 3mpg worse in the winter than i do in the summer
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Cross-Country
Joined: Apr 2006
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Couple of things. The turbo and chip were on when i was getting 23 mpg, so nothing changed in the setup. I have continuously checked the boots and all look good under the hood. I need to know how to check the maps. Can someone please point me in the right direction.
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Originally Posted by psi3000
Couple of things. The turbo and chip were on when i was getting 23 mpg, so nothing changed in the setup. I have continuously checked the boots and all look good under the hood. I need to know how to check the maps. Can someone please point me in the right direction.
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