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Unread 10-15-2011, 01:42 PM   #1
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Default Hello there.

Hello Carforum.net! My real name is Alex. Ive been on OCN a while and figured i'd check this place out.

This is my ride:

1993 Dodge Dakota Sport, Extended cab, 5 speed Manual, 4wd, 3.9L V6 Magnum

I got it from my Uncle for HS Graduation in 2009. He bought it new in Seattle in 93, and rarely changed the oil. It had been sitting at our house since 2002, not running. I ended up having to replace the engine, as it was a cheaper option than rebuilding its original engine, which had approximately 182k miles on it. Ill see if i can find the pics i took of the inside of the old engine...... We have no idea how many miles are on the replacement engine as it came from a lot....

Ive been driving it now for over a year, and it has been Rock solid the whole time. Last winter was my first time driving in the snow, and with 4wd with siped tires, I had absolutely no issues, heck i was even able to have some fun with it!

Recently i have been looking around for tips on increasing Fuel mileage.
I have to drive ~20mi to work and back 5 days a week, and at 16mpg its costing me at least $200 a month to keep it filled up. Yesterday i replaced the old air filter (napa, it was in the truck when i got it ) with a Fram Xtended guard filter, and i replaced the Spark plugs (stock champion RC12YC, also were in the truck when i got it ) with a new set of Bosch Platinum 2's, so im hoping to see some improvements there. I know, I know, that means those parts were nearly 10 years old. I probably should have replaced them when i replaced the engine, but my dad said they were fine (he's a mechanic)

I've read on other forums about some mods that can be done to increase mpg, Like advancing the timing or doing a tb mod, but i'll have to look around and see what those involve doing.....

Also, as you can see from the picture, the Clear coat on my hood is almost gone (dodge clear coat is notorious for doing this....). I need to get this thing painted someday...

So what do you think?
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Unread 10-15-2011, 02:27 PM   #2
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Hi welcome! What engine does it have? I wouldnt mod the TB it could hurt gas mileage on that truck. May be just try to remove any restrictions from the intake and exhaust. Also the plugs running a platnium plug isnt going to help gas mileage I would use either the oem champion plug or a ngk V-power a resistor plug like these will be more fuel efficient. Do be warned I have seen CPU failures on older dodges due to not using the champion resistor as its the only plug on the market that's RF shielded and Dodge doesn't shield there ECM from the factory due to using these. Cleaning the TB would probably help with mileage also, but the biggest increase will be by reducing weight where ever pissible.
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Unread 10-15-2011, 02:47 PM   #3
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Its running the 3.9l V6 Magnum engine.
I agree that running Platinum plugs by themselves may not help, but my old plugs looked worn out to me. As far as shielding Im not too worried. all the cables are OEM shielded, but I am already getting alot of EMI from the distributor (i had a CB radio installed in it, and it got loads of EMI from the distributor) I'm thinking at some point i should replace it too.....

I Also read that cleaning/replacing the sensors could help. and ideas on that?

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Unread 10-15-2011, 04:08 PM   #4
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Welcome to CFN!

The best way to save mileage is just the way you drive. If you set a Prius on a race track and tell an M3 to just keep up with it, the M3 will get better mileage.

Weight reduction helps too
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Unread 10-15-2011, 11:23 PM   #5
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I've also heard of people getting good results just by adding a tonneau cover. I think anything covering the bed completely will decrease overall drag.

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Unread 10-15-2011, 11:30 PM   #6
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Quote:
Originally Posted by Nemesis158 View Post
Its running the 3.9l V6 Magnum engine.
I agree that running Platinum plugs by themselves may not help, but my old plugs looked worn out to me. As far as shielding Im not too worried. all the cables are OEM shielded, but I am already getting alot of EMI from the distributor (i had a CB radio installed in it, and it got loads of EMI from the distributor) I'm thinking at some point i should replace it too.....

I Also read that cleaning/replacing the sensors could help. and ideas on that?
See thats the Thing nothing is OEM shielded on that truck. Over time the RF degrades the ECM till failure.
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Unread 10-16-2011, 01:52 AM   #7
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Quote:
Originally Posted by Mike View Post
Welcome to CFN!

The best way to save mileage is just the way you drive. If you set a Prius on a race track and tell an M3 to just keep up with it, the M3 will get better mileage.

Weight reduction helps too
perhaps. I mainly only like to do quick starts, other than that i drive mostly normal. Ive tried doing normal starts but they haven't seemed to help.
on the weight issue, unless you know where i can find some cheap CF parts for a 93 Dakota, there isn't anything i can do to reduce weight...

Quote:
Originally Posted by shane View Post
I've also heard of people getting good results just by adding a tonneau cover. I think anything covering the bed completely will decrease overall drag.
I may try adding a bed cover to see if it helps anything.

Thanks guys!

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Unread 10-16-2011, 09:47 AM   #8
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On the weight issue start with the spare is it a space saver or full size a space saver will cut alot of weight. Light weight wheels and low rolling resistance tires are great unsprung weight is the best to save. Any sheet metal are braces under vehicle thats not needed. Andfinally clean and extra crap you keep in the truck out.
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Unread 10-16-2011, 12:32 PM   #9
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Quick starts are the #1 thing that'll kill mileage. Keep your RPMs down.
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