terrible gas milage

[puddle jumper]

Re: terrible gas milage

Just food for thought

Does your car seem to be running at a higher rpm or revving more on hills. Its possible that your trans is slipping.

Are your tires on your car over sized.

 

[4JawChuck]

Re: terrible gas milage

Check thermostat and air filter, neither of those being bad will set a CEL. Might want to check and see if the CEL isn't burnt out too.

 

[kei9th]

Re: terrible gas milage

sorry no hills so i have to say no running at a highr rpm . the tires on my car are the proper size no rims or anything.

 

[TerryMSU]

Re: terrible gas milage

Keith:

There is a Hyundai owners web site at edmunds

http://townhall-talk.edmunds.com/We...scussions@@.ef14c39!make=Hyundai&model=Accent

Also, the shop manuals for Hyundai vehicles are available on line. (wish boat engine manuals were...) I can't seem to find it easily, but if you need it and can't find it, send me a PM and I will add it to this reply.

TerryMSU

 

[DavidW2009]

Re: terrible gas milage

Check all vacuum lines for condition and connections.

I don't know if this car is equipped with a MAP sensor, but when they go partially bad, the fuel economy goes, too. But that may or may not register a code.

If this Hyundi has an EGR valve, it needs to be checked along with the EGV (valve that controls vacuum to the EGR).

A bad temperature sensor could be telling the ECM that the engine is cold, when it has actually heated up to operating temp. This will cause a rich fuel mixture.