Less Gas Milage After a Tune-up

[pbej53]

so..recently i went to Precision Tune to have the plugs and wires on my 2000 Montana changed at a cost of $240. After 3.5 hours of waiting, i get my van back and after about 2 weeks of driving i find that i have gone from about 17 - 18 miles per hour around town to approximately 14-15 miles per hour....what could be the cause of this problem?

 

[Steelcity]

What brand of plugs and what number ? Wonder if they put wrong type in ?

 

[pbej53]

yeah that's waht i am thinking...i dont know..i will have to check the receipt...have to go to work but will let you know

 

[melsg5]

try to look at the plugs themselves and the get make and number

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[pbej53]

thank you guys for your help...ok, that sounds like a good idea, i will do that tomorrow morn when the motor has cooled...i have heard lately that this company has a habit of not doing what they say. Auto zone told me that i am supposed to use a double platinum plug...i have a feeling that that is not what was used. I used to be able to do this kind of thing myself and make sure it was done right, but this Montana is killing me! everything is too out of the way to get to!