Question about Hyundai Motor 2002 Sonata
Replaced Sparkplugs,plugwires,ignition coils
There's a lot on any car that can cause loss in power.
A few of them are:
Mass air Flow sensor
Bad O2 sensors
Old oil or sludged oil
Clogged catalytic converter
Loss of cylinder pressure or compression
I would start with the cheapest tests/fixes first
oil: if you haven't already and don't know the condition of your oil, change it. If your oil has sludge in it then you could have a leacking head gasket.
Next up, If your gas is bad fill the tank about half way and use lucus oil octane booster, and for a second half a tank pour in some seafoam engine cleaner. It will clean your fueling system, injectors, and pistons/chambers.
If those too don't help: get a compression test on the cylinders. Not expensive to have done, but could be expensive to fix if there is something wrong or the compression is leaking.
Next, go to a muffler shop and have your catalytic converter checked. A clogged or bad Catalytic converter may trap exhaust and keep it from exiting your exhaust system.
While your there you can have your O2 sensors checked.
If all of that is fine, replace the O2 sensors and the Mass air flow sensor. These components control the air fuel ratio. If they are going out your engine won't ever get the right amounts of gas and air to run properly.
It's a lot, but my general rule of thumb for trouble shooting any issue with a car is to start with the cheapest fix and work your way up.
Posted on Jun 03, 2009
Check air filter , fuel filter, fuel pump, catalitic converter
Posted on Jun 03, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Oct 24, 2013 | Cars & Trucks
Aug 24, 2012 | 2005 Chevrolet TrailBlazer
Jan 29, 2012 | Hyundai Sonata Cars & Trucks
Aug 11, 2011 | 1985 Jeep Cherokee
Apr 30, 2011 | Honda Accord Cars & Trucks
Apr 05, 2010 | Chevrolet Cavalier Cars & Trucks
Mar 19, 2010 | 2000 Mazda Protege
Nov 03, 2009 | Pontiac Grand Am Cars & Trucks
660 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: