Question about Mitsubishi Mighty Max
Only when the engine is cold, and the check engine light comes on while on the highway, it will decelerate like my foot is off the gas no matter how much I press it. I have to take my foot off the gas completely and re apply it to get the car to try and accelerate again. it sometimes bucks and sputters during throttle as long as the check engine light is on, which is again only first thing in the morning. if I pull over and cut it off and restart it, the light is still on, and after a few minutes it will shut off on it's own and it runs fine like nothing ever happened. all sensors are plugged in securely and dry. I recently changed the plugs, wires, cap, rotor, pcv valve (and cracked the valve cover tightening it down) fuel filter, and air filter. could this be a mass air flow sensor, o2 sensor, or egr valve? I did push the diaphram in the egr valve up and it moves freely. and for backround purposes I did seafoam the truck like a week ago by pouring in through brake booster line into the intake manifold. thank you
Posted by Anonymous on
Any trouble codes? There should be a code registered by now. That should point you to the problem. And if not, you probably need to look at the sensors data feed when the problem is going on. Look at live streaming data, I mean, the MAF, oxygen sensor, in fact all of the sensor data.
Posted on Mar 06, 2017
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
Fuel Pressure Regulator?
Are there any codes/check engine light?
Just off the top of my head.
Posted on Mar 11, 2010
hi there, i had the same problem with my 98 astro van, and took it to the shop, the computer pumped out a mass airflow sensor, they replaced it at considerable cost lol, but the van now runs good
Posted on Jul 03, 2010
SOURCE: 2004 Silverado 4.3 V6
Check engine light on? Any codes? Missed before and after the cap was changed? Or is the cap new so you assume its good. I have had caps bad out of the box.
Posted on May 29, 2011
Tips for a great answer:
Oct 20, 2015 | 2003 Subaru Forester
Jul 22, 2014 | 2002 Dodge Neon
Jan 18, 2013 | 2001 Honda Accord
Jun 06, 2012 | 2002 Chevrolet Blazer
Sep 11, 2011 | 2003 Mercury Sable
Jun 12, 2011 | 1995 Toyota Camry
Oct 01, 2009 | 1995 Ford Econoline
Sep 05, 2017 | 1996 Oldsmobile LSS
Jan 16, 2009 | 1991 Plymouth Laser
17 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: