05 grand caravan surging problem!

myvancan · #1 08-30-2007, 12:22 AM

I started out with a low mpg problem soI replaced the plugs 3.3 has 88,568 miles.
Replaced plugs with Bosch Platinum +2 and the MPG became worse?
I now have a surging or fish bite problem while at constant trottle?
Is it the plugs or someting else?

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myvancan · #2 09-04-2007, 02:47 PM

TTT Thanks!

dishdude2k · #3 09-04-2007, 08:05 PM

good god.. take out the bosh and throw them as far as you can.. you picked the WORST plugs out on the market.. might as well put 2 stroke plugs in it

myvancan · #4 09-05-2007, 11:34 PM

I was looking for a reason why they are the worst, and what would be the best plug to replace them with?
I have used them in honda's with great results and maybe need to start putting them in my chainsaw!
I have noticed that the surging gets worse when the A/C is on?