2001 Mitsubishi Galant Backfiring – Fuel Pump Problems?

Q & A #40 With The Auto Specialist

Welcome back to the latest installment of the Auto Specialist. We’ve been dedicating time with this regular column to answer readers’ questions about the problems they’re having with their vehicles. If you’re experiencing any issues with your car, truck, or SUV, there’s a good chance we’ve already covered it. I’d like to encourage you to take a look through our growing library of archives. If you don’t find what you’re looking for, please feel free to send your question in and we’ll all learn from it.

Last time, we helped Charlotte decide whether she should save a few dollars with a rebuilt alternator or invest in an OEM unit. We also answered a question from Brian regarding his engine‘s spark knock. Today, I’ll answer a question from a reader named Jason regarding how auto repair shops fix their rates.

Question: I have a 2001 Mitsubishi Galant with the mileage at 113,000. A couple weeks ago, I had the fuel pump replaced. I know you’ve said in the past that some parts should only be replaced with their OEM counterparts, but I wanted to save money. I had the mechanic put a rebuilt pump in. Ever since, my car backfires at high rpms. I’ve taken it back to the garage, but the mechanic can’t find the problem. Do you know what’s causing the backfire?

Answer: Thank you for your question, Ryan. If I had to guess, I’d say the rebuilt is defective. Here’s what I’d do: go back to the mechanic and have him swap out the rebuilt for an OEM fuel pump. It will cost you a little more money, but I’d be willing to bet that it resolves the problem. Like alternators, fuel pumps are too important to trust to a rebuilt or remanufactured replacement.

That’s it for today’s segment.  I cannot stress enough the importance of using OEM auto parts when you need to replace something. Knowing that you’re buying a component that is designed to spec is well worth the investment. Until next time, drive safely.