we just did a tuneup on our 09 vibe 1.8L engine, changed spark plugs..( only 2 of the old ones were hand tight ) new serpitine belt, cleaned K&N filter and changed the oil...now getting horrible gas mileage...13 to 16 miles per gallon...HELP
My VIBE
K&N drop in
Konig Unknown 17
Goodyear Eagle GT 225 45 27
Tinted all the way..including brow
Leather Shifter to Match car
Short antenna
Painted Calipers
Custom Plates...MYVIBE
Viper 5901 remote start and alarm
....MORE TO COME......
I would start by pulling the new plugs and verifying that they're the right ones, and make sure they all look like they're firing. Then make sure the coil packs are fully seated on the plugs. I guess I'd double check the belt routing and that I got the right belt. I've had parts stores give me the wrong one more than once. Throw away the KN filter and pick up a NAPA Gold or other other good quality filter. If everything checks out try disconnecting the negative battery terminal for 20-30 minutes to reset the computer.
I'd change the air filter and clean the MAF too, unless that's been done recently.
As a Corolla Vibe owner myself, I can only offer a suggestion of the obvious:
Did you order the $9 Denso iridium plugs from Rock Auto, or did you put in some two pronged E3 plugs that belong in lawn mowers? If you did not put in the NGK or preferably the Denso plugs, please do so and report back. I'm hoping that is all there is to this. Good luck.
05 Matrix XR 4WD and 03 Vibe GT
"If you want Government to solve your problems, then you are the problem!" BMSR
Trix MODS: SRI w/ AEM filter, Vibrant/Magnaflow Cat-back, Alutec Lightweight Crank Pulley
GT MODS: Cosmo SRI, DRL, Auto Stop
Forgot to mention another obvious culprit: tire pressure. With the stock 205/55 tires on mine it's really almost impossible to spot a tire that's down to 20psi just by looking. But boy can that suck the mileage down.
Mark wrote:Forgot to mention another obvious culprit: tire pressure. With the stock 205/55 tires on mine it's really almost impossible to spot a tire that's down to 20psi just by looking. But boy can that suck the mileage down.
Yes,... always check your tire pressure!!! ...at least once a month,
* 2003 Vibe Auto Satellite Silver w / Moons & Tunes
* Kenwood Excelon KDC-X597
* Polk DB651-Speakers
* Soundproofcow Roadblock R sound deadening in all doors
* Drop In K & N Filter
* NGK Iridium IX Plugs
* 27 MPG City/Highway with AC on
re-checked the plugs...denso iridium, coil pacs look good, changing out the K&N for Napa Gold today, have the oil re-checked today also as well as tires rotated..will get back with y'll .....ty for all the help...
My VIBE
K&N drop in
Konig Unknown 17
Goodyear Eagle GT 225 45 27
Tinted all the way..including brow
Leather Shifter to Match car
Short antenna
Painted Calipers
Custom Plates...MYVIBE
Viper 5901 remote start and alarm
....MORE TO COME......
cptnsolo77 wrote:Possible the K&N was over oiled ?
You may have to clean the MAF sensor if it was over-oiled.
* 2003 Vibe Auto Satellite Silver w / Moons & Tunes
* Kenwood Excelon KDC-X597
* Polk DB651-Speakers
* Soundproofcow Roadblock R sound deadening in all doors
* Drop In K & N Filter
* NGK Iridium IX Plugs
* 27 MPG City/Highway with AC on