Why does my 98 kia sephia idle so rough when stopped or moving slow? Also loose power going up hills

Asked by Jul 10, 2009 at 01:48 PM about the 1998 Kia Sephia

Question type: Maintenance & Repair

5 Answers

3,575

Your car may need a tuneup. You can get kits for this job, and it is not extremely difficult, but you need to pay extreme attention to every step. I wouldn't be extremely surprised at that model of car losing power going up hills simply being a symptom of a small engine.

5

mine does that to it might be the heat shield on the catalitic converer

it could be da gearbox 2...it happens 2 me nw......

275

The tps, throttle position sensor may not be working. This would lead to rough idle, and some loss of power, but it could also be a misfire in one of the cylinders. Check plugs, leads, etc. Ask yourself does the car need a service, when was it last done? It would be best if you could get a read out of any fault codes that may be stored in the ecu first, find a garage that will use a code reader to do this, cheaply mind, or get one for yourself. There are many other issues that can be involved, but check the cheapest first, plugs leads etc. Tps sensor is a best bet for rough idle on tick over, and during a journey.

1 out of 1 people think this is helpful.
10

A tune-up may be necessary. I suggest "Boche" platimum sparkplugs. The job may look intimidating at firtst, but careful accounting of the bolts and other parts be a must.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Sephia

Looking for a Used Sephia in your area?

CarGurus has 43 nationwide Sephia listings and the tools to find you a great deal.

ZIP:

Search Kia Sephia Questions

Kia Sephia Experts

#1 dylanhall
dylanhall
Reputation 50
#1 goldenapple
goldenapple
Reputation 50
#3 rayswan
rayswan
Reputation 40
View All

Related Models For Sale

Used Honda Civic
512 Great Deals out of 89,869 listings starting at $1,299
Used Ford Focus
543 Great Deals out of 57,101 listings starting at $800
Used Subaru Legacy
239 Great Deals out of 16,686 listings starting at $1,300
Used Toyota Camry
838 Great Deals out of 90,968 listings starting at $850

Used Cars For Sale