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tomtom
Dodge Dakota
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3/31/2006
17:06:58
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 Subject: evap code/ crappy mileage
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Message:
i have an v6 extended cab auto dakota, 22000 model year. it is getting like 10 mpg and i have replaced the o2 sensors and stuff. It also has a engine code up that says small evap leak detected. what is my problem
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cuzindoug
GenIII
3/31/2006
18:00:21
| RE: evap code/ crappy mileage
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Message:
The small evap leak is your gas cap. Either it's not tightened down or the gasket is shot. The mileage on the other hand could be a number of things...wires, plugs, air filter, etc are the easy ones. It could also be the gas your burning. I was burning 93 octane for a long time, I changed to 87 and started pinging, so changed to 89, and got better mileage as well as for power. How about your oil? multi-weight or just straight 30 weight? 10W-30 synthetic will net you better mileage...the list goes on. Just keep in mind that the CC's and 4X4's are not the most gas thifty trucks when coupled with the 3.9.
If it ain't broke, fix it til it is.
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zzark
*GenII*
3/31/2006
20:59:34
| RE: evap code/ crappy mileage
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Message:
With 10 mpg and that "code" I bet you have a BIG leak. Do you smell gas at the rear?
Check the gas filler tube and where it goes into the gas tank. And get a new gas cap.
zzark
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Scott C.
Dodge Dakota
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3/31/2006
21:32:33
| RE: evap code/ crappy mileage
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Message:
small evap leak is not a gas cap.... most small evap leaks are cracked hoses that are normal in areas where there can be movement or vibration... like around intake manifold, gas tank, engine to frame rail like around the canister and so on.... gas caps rarely go bad....
Scott C
Royal Auto
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cuzindoug
GenIII
3/31/2006
22:08:35
| RE: evap code/ crappy mileage
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Message:
Thank you Scott. I have had that code, and one of my friends had that code, and it WAS caused by the gas cap gasket. You can probably ask around this site as well, it where I got the answer that fixed my code, from what I read it happens quite a bit.
Oh, by-the-way tomtom, check the hose that runs from the top of the tank to the evap canister, it likes to dry rot and crack.
If it ain't broke, fix it til it is.
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tomtom
Dodge Dakota
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3/31/2006
23:22:24
| RE: evap code/ crappy mileage
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Message:
i have already replaced the plug wires and stuff. so i gues i will replace the gas cap, but would that causse bad mileage, i thought these trucks got like 18mpg
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zzark
*GenII*
4/02/2006
10:46:02
| RE: evap code/ crappy mileage
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Message:
cuzindoug,
What type of hose is needed to replace that hose from the tank to the evap?
Would an air line hose be OK?
Thanks
zzark
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cuzindoug
GenIII
4/02/2006
23:07:06
| RE: evap code/ crappy mileage
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Message:
You know, I don't remeber the exact size, I think it was 1/4 inch (inside diameter) vacuum line.
If it ain't broke, fix it til it is.
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tomtom
Dodge Dakota
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4/03/2006
17:24:51
| RE: evap code/ crappy mileage
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Message:
just replaced the cap and the exhaust still smells bad, it runs and idles great, i still am getting the bad mileage, i have already replaced the o2s. what could it be, i can watch the gage go down when i dirve
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dddddd
Dodge Dakota
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4/03/2006
17:27:31
| RE: evap code/ crappy mileage
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Message:
colud it be my cat?
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rick
Dodge Dakota
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5/03/2006
06:50:03
| RE: evap code/ crappy mileage
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Message:
I believe its 1/4 hose, it should be on the hose what diameter it is..heck you can pick some up at Autozone pretty cheap..Iv changed one section of hose right by the evap test valve and now it looks like i have to find another crack some where else...it can get anoying!
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tcoons11
Dodge Dakota
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2/02/2010
16:35:22
| RE: evap code/ crappy mileage
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Message:
i have a 2001 dodge dakota with a check engine light on. i tested it and the codes are p0455 and p0442 also the exhaust smells bad, what is the cause
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Here ya go
Dodge Dakota
JOIN HERE
2/02/2010
17:14:36
| RE: evap code/ crappy mileage
IP: Logged
Message:
455 = A large leak has been detected in the
evaporative system!
442 = A leak has been detected in the evaporative
system!
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fotodak
Dodge Dakota
JOIN HERE
2/03/2010
00:11:08
| RE: evap code/ crappy mileage
IP: Logged
Message:
Ensure the brakes aren't dragging. make sure the air filter is clean.
Plugs, wires, etc. Tire pressure. Clogged exhaust.
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