| From | Message |
WipLash
R/T
2/22/2004
00:44:04
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 Subject: RE: poor gas mileage
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Message:
I think my stat is opening too soon because it doesn't get as warm as it used to. That would cause the gas mileage to drop a little, but not 4mpg. It may need new O2 sensors, but I'm not getting any codes and the thing only has 17,000 miles on it. I'm afraid it's the transmision slipping.
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doppy
Dodge Dakota
JOIN HERE
2/26/2004
22:33:40
| RE: poor gas mileage
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Message:
`97 ext c 318 I have a bad base intake gasket the dealer told me if its real bad I should notice loss of power, LOSS IN MILEAGE, and a sparadik horrid spark knok all of these seem to be affecting my truck. dont know very much about it but it could be happening to you.
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WipLash
R/T
2/26/2004
23:27:42
| RE: poor gas mileage
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Message:
If it had a leaking base on the intake it would definately ping. I can put 87 oct in with the AC on and pull a 4000lb trailer and it still won't ping.
For whatever reason there is a big difference now between 60 and 80mph. The O/H computer used to read 18mpg @ 60mph, 17/70, 16/75 and 15/80.
Now it reads 17/60, 13/70, 11/75, and 10/80.
I'm going to give it a tune-up soon. I've held off on this because I can't imagine anything needing a tune-up in 17,000 miles. This will be the first Dakota I've owned out of 7 that the gas mileage didn't go up between 15,000 and 30,000 miles.
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00R/T CC
Dodge Dakota
JOIN HERE
2/27/2004
10:34:43
| RE: poor gas mileage
IP: Logged
Message:
WipLash: What brand/temp t-stat are you using? Just wondering
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WipLash
R/T
2/27/2004
20:13:51
| RE: poor gas mileage
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Message:
I'm not real sure. The thing runs a little on the cool side. I think that's half my problem. I may have just gotten too used to the 4.7L. It would blow hot air by the time I reached the end of my driveway. This thing takes about 2 miles before the needle even starts to move. It takes 5 miles before the heater warms up. By 8 miles it is finally blowing hot air. This isn't helping my fuel mileage, but I don't think it's causing the 4mpg decrease either. I have filled the tank up AFTER the engine was up to operating temp and it still wouldn't go 230 miles on a tank of gas (19gal) driving 75mph. It is getting worse by the day. The performance is now starting to drop off as well. I think something major is about to go wrong. My 68 BIG BLOCK Charger got better gas mileage than this and it didn't have an OD.
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