Car won't accelerate past 70 mph

Asked by Jun 27, 2016 at 06:45 AM about the 1999 Mitsubishi Eclipse GS

Question type: Maintenance & Repair

I just bought a 1999 Mitsubishi Eclipse
2.0L DOHC with 170K+ miles. I was hoping
to make this a project like car since I
bought it so cheap. I am having a bit of a
problem with the acceleration however.
The car takes like 10 seconds to get to 40,
way slower than my 2007 Ford Fusion.
Also when I'm on the freeway and I try to
accelerate past 60 mph it gets a bit difficult
but eventually I get it to 70 mph and after
that it's impossible to go any faster 70
mph. I was wondering if any of you had
any idea what the problem could be.
Maybe the engine is just old and tired ???
I'm not exactly a car genius haha thanks

2 Answers

52,115

It is possible that a catalytic converter is melted and / or plugged causing an exhaust restriction. Fuel pressure could be too low and there could be other issues. Is the check engine light on? If so what are the codes?

I'm going today to get the engine light checked and I'll post whatever codes show up thanks

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