Q: 1999 Mitsubishi Eclipse running rich

asked by on

My 1999 Mitsubishi Eclipse is running rich—minus ten percent long-term fuel filter. While cruising it’s even worse—minus 15 to 25 percent when at idle, causing low idling and stalling. My TPS reads 13 percent when closed and only reaches 75 when fully open. Could a TPS cause a rich position?

It certainly can. My experience with those Mitsubishis is that they have a lot of problems with the fuel injectors when they get old.

First, I would have a mechanic clean the fuel injectors. Sometimes, it’s that simple. Knowing Mitsubishi Eclipse, a lot of times, their main computers just go bad and they give the wrong data to the injectors and clog the system out. That often happens on Mitsubishis. If you need help getting this issue resolved, a technician from YourMechanic can visit your home or office to diagnose your car’s stalling issue to make sure that the correct repair is done promptly and effectively.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 1999 Mitsubishi Eclipse running rich

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Occasional difficult startup - 2011 Mitsubishi Outlander Sport

Hey there. Heat alters operating parameters and causes phenomena ranging from higher resistance in ignition circuits to vapor lock. When the car is HOT, it would be sensible to investigate the ignition system first and see if any obvious faults...

Q: Plastic intake manifold on the North Star engine.

Hi there. The 1993 Northstar intake is made of magnesium, and has a different system for "blowout" or backfiring protection. It has been used by some folks who have had bad experiences with the "plastic" intake manifolds. There will be...

Q: Car shifts roughly and jerks

There is most likely a problem with one of the sensors on your engine. Depending on which sensor fails, and how it is failing, signals may be sent to the computer that can make the transmission shift harder because it...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.