check engine light?

This happens when there is a trouble code present to point to a system that is having an issue this guide can help us get the codes so we can fix it.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.

engine light not dissapearing i did the service hoping that it will dissapear vvti 2,7 toyota hilux

Lets run the codes to see what's going on lets use this video which is on a similar car.

https://youtu.be/vMwTzURWXmk

let us know please.

2003 Tacoma has only 25,000 miles, never overheated, been sitting alot, very well maintained, oneday engine lu=ight is on & engine is idling rough, as by misfire. All plugs replaced, compression on 3rd cylinder has no compression. How could this occur? And what will be the repair/ cost necessary to repair the engine on this truck?

Hi be0hbe,

Without knowing the fault nobody would be able to provide any costing.

Get a scan done to find out why the check engine light is showing.

I just bought this truck and it needs some TLC. While replacing the stock exhaust with larger pipes and a Flowmaster exhaust I acquired a bit of HP and mileage but I also got a frequently lit "check engine light". Is there any way to recalibrate the computer or fool the O2 sensor to keep this nagging light off? The truck runs very well and the scanner shows no other codes hampering the truck. Please help....there are no real mechanics here.

The check engine light shouldn't come on. Does the O2 sensor detect a lean condition? You might want to make sure your exhaust system was welded correctly.

It was welded professionally. However the truck takes a while to detect a lean condition. Is there a dummy sensor available or should I just remove the light bulb. It doesn't hamper the performance but it sure is annoying.

If you're not affected with the EPA IM-240 emission program take the bulb out that's if you sure its not disrupting engine performance. When the oxygen sensor is heated up to 600F deg. this is where it start snitching to the computer how to adjust fuel-

If it detects a lean condition then you have too much air in the system. Even a bad seal of fastening epoxy on the O2 senor could allow air to get by. Did you replace the exhaust manifolds? (can't weld on cast iron) I have never seen someone weld downpipes and exhaust manifolds because then it becomes a real pain to remove. I wouldn't recommend removing the check engine lamp because you will not know if other problems arise.