20 Most Recent 1998 Mitsubishi Galant - Page 7 Questions & Answers

Combined city/highway should be around 27 mpg give or take 2 mpg.

Have the trouble code checked by a shop and report back.

The first thing you should do is check all related fuses. There is a fuse box at the right front in the engine compartment. There is also a smaller one inside the car to the left of the brake pedal. Each location should have cover with a diagram of each fuses purpose.

Next, you'll need to check whether fuel and spark is getting to the cylinders. You might consider having a mechanic determine this for you. Some repair facilities such as Pep Boys will tow your vehicle to their shop for free as long as you're within a certain distance. Keep me posted...

Yes that is were the fluid goes there is no cap like for the oil!

Is the car appear to be stuck in one gear? Does O/D work? Need more info to diagnose, thx.

This engine uses a separate ignition coil for each spark plug, the spark plug is directly under the coil in a deep well in the valve cover, This type ignition system is referred to as a "Direct Fire" igntion system for obvious reasons. Remove the coils (one for each engine cylinder to access the plugs. See picture of coil below.

Hi and welcome to FixYa!

It can be two things. If they performed a car scan then the problem can be determined easily. If not, please ask them to do so. It can be a bad MAF (mass air flow) sensor or a faulty IACV (idle air control valve). If one these sensors are faulty problem like yours occurs.

Car scan is highly recommended rather than guessing on what part to be replaced although my suspicion is a faulty MAF or IACV.

Hope this helps and thank you for using FixYa! Have a good one!

i think this is:
Fuel Composition Sensor Circuit Low Input
try to see if this is

check where the latcches connect. you may need to move the one on the car in toward the front abit

Run a good fuel treatment through it (Stp. Gumout, etc...) then replace fuel filter

that button when active keeps the car in gear. Meaning at 55 cruizin the highway when you push the hold button it keeps the car in overdrive and will not let passing gear activate. Its really useless and it was only installed for a few years before going to the power/economy switch also useless....

Don't know if you ever got this fixed, but my guess is it's a bad throttle position sensor.

Bad idle air control valve. Most likely needs to be replaced. I'm guessing you have around 125K miles on your Galant, right? See other posts for solution.

That's a problem with the idle air control (IAC) valve. See other solutions on this site for instructions.

You have a bad throttle position sensor which is mounted on the throttle body. Pretty easy to replace, just note the position of the old one. It's secured by two small bolts. The part is usually special order and costs about $110.

Is it a single or dual overhead cam?

Code P0505 is a problem with the IAC (idle air control) which regulates the idle speed. To check it quickly, disconnect the IAC connection located below the throttle body near the firewall. Start the car and the idle should run around 1300 rpm at idle. If this is the case then the likely cause it a bad idle motor. The cost of a new one is $110 at Pep Boys or $30 at a Pick n Pull. Keep me posted, thx.

Do you have a "Check Engine" light? If not, check that the accelerator cable is functioning properly. When the accelerator is in the normal position the throttle plate should be completely closed. If necessary you should remove the air duct to inspect the interior of the throttle body. The cable should be have no slack but should allow the throttle plate to close all the way.

If the throttle is working properly then I would suggest looking at the idle air control (IAC) valve which controls the idle speed when the car is in park, in neutral or in gear and the accelerator is not depressed. Try disconnecting the IAC and note how the idle is affected. This will cause a Check Engine light to turn on. To clear it, disconnect the negative battery cable for 5 minutes then start the car. Let me know what you find out.