2004 Kia Optima, hesitation, sluggish acceleration


Asked by May 30, 2015 at 05:46 PM about the 2004 Kia Optima EX V6

Question type: Maintenance & Repair

I have a 2004 Kia Optima w a V6. Am noticing occasionally when I step on the gas it is
sluggish in acceleration response. Almost seems like it's starving for fuel? Not missing,
not sputtering. Has only happened a couple of times. Both have been after it's been
sitting all day. Not on original take off, but the first acceleration over say 20mph...
someone told me to change plugs and wires... yes? or other thoughts?

2 Answers


Sounds like your throttle body needs to be cleaned out but first I would try a bottle of cleaner to put in your gas tank. A fuel filter would be something else to consider. Also try putting in middle grade or high test gas every now and then.

Juan Diaz

I had a similar problem with my car going up hill loosing power. and a mechanic found the catalytic converted to be plugged, that was the issue

Your Answer

Add photo

Related Questions

Search Kia Optima Questions

Kia Optima Experts

#1 Tom Demyan
Tom Demyan
Reputation 870
#2 kc07kia
Reputation 360
#3 James Warner
James Warner
Reputation 350
View All

Related Models For Sale

Used Hyundai Sonata"
1,038 Great Deals out of 51,796 listings starting at $1,200
Used Honda Accord"
1,319 Great Deals out of 78,664 listings starting at $1,395
Used Nissan Altima"
1,492 Great Deals out of 87,985 listings starting at $1,195
Used Toyota Camry"
1,656 Great Deals out of 98,536 listings starting at $895
Used Chevrolet Malibu"
1,170 Great Deals out of 72,682 listings starting at $695
Used Nissan Maxima"
466 Great Deals out of 24,113 listings starting at $800
Used Honda Civic"
1,183 Great Deals out of 58,588 listings starting at $1,295
Used Hyundai Elantra"
881 Great Deals out of 51,851 listings starting at $1,995
Used Kia Sorento"
573 Great Deals out of 36,030 listings starting at $2,500
Used Mazda MAZDA6"
250 Great Deals out of 15,220 listings starting at $1,495
Used Chevrolet Impala"
950 Great Deals out of 35,737 listings starting at $700

Used Cars For Sale

2016 Kia Optima For Sale
41 Great Deals out of 19,063 listings starting at $13,573
2015 Kia Optima For Sale
138 Great Deals out of 4,076 listings starting at $9,000
2014 Kia Optima For Sale
83 Great Deals out of 1,788 listings starting at $9,025
2013 Kia Optima For Sale
233 Great Deals out of 4,337 listings starting at $6,980
2012 Kia Optima For Sale
64 Great Deals out of 1,059 listings starting at $6,499