Skip the auto shop - Our mechanics make house calls

Q: Possible computer problem

asked by on

My specific circumstance stems from not correcting cel issues over a long period on my 02 Galant that I bought new and the cels began about three years after starting with misfire codes. Long story short, the 11 years from 05 till March 2016 of this neglect rendered the cat to the condition of failure which means the insides had come loose and was clogging the exhaust. I could not afford a new one so I cleaned it out and drove it for the 4 months between March and July when I obtained the new cat. I installed the new cat but foolishly just started the car (which was a normal start and run) and began to drive immediately, and the car stalled at about 150 FEET and did not restart. I believe operating the car without the cat for that long pushed the computer adjustments so far out that when the new cat was installed, driving without allowing the car to adjust while idling caused the computer to shut down. Can't afford tow and blind diagnostics so direction to proceed will be appreciated.

My car has 137000 miles.
My car has an automatic transmission.

A: Installing a new catalyst will not cause th...

Installing a new catalyst will not cause the no start. You will need to have the computer scanned and all the fuses checked. You may have damaged or shorted one of the O2 sensors wires when you did the job of the replacement. Check for spark and fuel pressure after the scan is where you have to start. Since you are looking for an alternative for towing, you may consider enlisting the help of a mobile professional, such as one from YourMechanic. They will be able to come to the site of the car to thoroughly inspect and diagnose the starting problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Catalytic Converter 2004 Nissan Xterra

Hello - there are 4 catalytic converters for your vehicle with the V6 engine. There is one that is part of each exhaust manifold (that's 2), and one for each exhaust pipe just below the exhaust manifold (2 more). Space...

Q: Car keeps dying

There are few things that could cause the engine to stall. If it is fuel-related, here are some items to check: There is a small filter on the front of the carburetor that should have been changed with the pump....

Q: Indicate oil/ pressure low,batery alternator,engine emission warning,heat warning

In the future, please include the model of Hyundai as well. The more information we have, the better the answer we can provide. I'm sorry to hear you are having problems with your new car. Since it is so...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...