Question about 2002 Mitsubishi Galant
My 2002 Mitsubishi Galant runs rough and when it is in park while the car is still running it shakes. some people say i have a vacuum leak so how do i find it and fix it?
Get a can of starting fluid (ether or the like) and give it little shots in areas you suspect the leak. Engine will rev if you've sprayed near the leak. Hard to speculate on the fix before you locate the leak however.
Posted on May 06, 2014
I think that you should probably look at the engine and transaxle mounts as well as check it for a misfiring cylinder as the cause of imbalance which in turn usually wears out the mount(s) and that then allows the engine to shake even more and that is usually when the problem is then noticed. Vacuum leaks usually will cause a surging idle, not shaking. But you can check for them using starting fluid and just spray it in places where a leak could develop and on all the vacuum lines and listen for an increase in the idle. When you spray where there is a leak, the starting fluid will get sucked in and the idle will rise briefly. However, like I said, I think a misfire and motor mount combination is your culprit so check that first.
Posted on May 06, 2014
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Posted on Jan 02, 2017
SOURCE: 2002 mitsubishi galant
Has it overheated lately?
My wife overheated our Galant and it just stopped working, it cranks but that's it.
I pulled the sparkplugs and found them wrapped in a gewey jelly like substance. Like an oil/antifreeze combo.
I am going to replace the entire motor for $1000 as taking it to the mechanics to theorize and practice may cost more.
Posted on Dec 14, 2008
You should have your TPS and EGR looked at as those cause rough idles...Other causes are bad idle air control valve, bad plugs, bad distributor cap & rotor, a bad wire, bad O2 sensor, etc...
Posted on Aug 25, 2009
Testimonial: "Thank you for your time. We have replaced the plugs,wires,rotor,cap and distributor.If TPS,EGR,o2 bad,wouldnt engine light come on?"
Check if your fuse is blown! If not have the wires tested that run into your fan if there ok and show power then your fan needs replaced! Please give me a thumbs up if this helped! Thanks
Posted on Sep 24, 2009
vacuum leaks on intake manifold,
the air tube between the air filter.
intake manifold vacuum hose.
clean throttle plate with Berryman carburator cleaner
SEE sample picture HERE
Also remove carbon built up behind the EGR valve and the EGR passage tube.
Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.
More un-metered air (leaks) will lean out the fuel mixture.
Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.
At idle,just spray and listen for the RPM surge.
The in-rush of carb clearer will increase the RPM on the motor.
Record the problem spot(s) and address it later.
EGR carbon built up require 2+ hours to clean from start to finish.
You will need a new EGR base gasket before your start.
Locate and remove the EGR valve after the vehicle is cool down.
Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.
Remove the EGR valve.
Inspect the location of the carbon built-up inside the valve and the EGR passage tube.
SOAK these areas with WD-40 spary.
You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.
RE-SOAK the carbon and let it sit for over-night will also help.
One the last round,pass a shop vacuum of the EGR valve and the passage pipe.
Install the new EGR gasket and connectors.
Allow the vehicle to warm up outdoor to burn up any remaining WD-40.
Take it for a test drive.
Please rate my answer if it's useful to you.
Posted on Dec 19, 2009
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