If you’re like me, then your catalytic converter might be on its way out. This is a very common part that needs to be replaced every 5 years or so during the span of an automobile’s life. The most common reasons for replacing your cat are rust and the inability to pass emissions tests during inspection time.
So the long and short of it is, the DME turns on the Air pump, the sensors sense no change indicating A Secondary Air Injection malfunction or low flow and DME turns on the Check Engine Light. Now what? Dig in.
I began to look seriously at the hydrogen kits available to enhance your vehicle. These are the ones that do not claim to exclude the use of gasoline. These claims seemed to be more reasonable and easily accepted. I have a pretty good knowledge of how a car works and what emissions are. One thing that people know as a common piece on their vehicle is the catalytic converter. This is the piece that sits inside the exhaust pipe and is what causes the exhaust to get extremely hot. It does this because your vehicles engine goes not burn all the gas away, much of it toxic, and sends out the half burned mixture into the air. The catalytic converter recyclers becomes hot and helps to burn off the excess gas as much as possible.
Reprogrammed ECUs for the Supra TT are VERY $$$. They are in the $1200 range. And they have not been proven to provide a significant increase in performance or safety on BPU(TM) level cars. Their merit shows itself on cars with upgraded Turbo(s). Just be sure you buy your ECU, or have it reprogrammed by a reputable shop that knows what they are doing. And have it tailored to your particular car (Driving habits, and Mods). And I would also recommend taking a look at the AEM Programmable system.
Raise the car. At some point, you will want to get the car off the ground. By putting it on a lift, you can do a more extensive check of the suspension system, the exhaust system and look for signs of damage including water. The catalytic converter recycling converter should be functioning, a very expensive part to replace on any car.
And lastly, don’t forget about tire pressure. This one is very important, not only for fuel economy, but for overall travel safety. Check cold pressure in the morning and inflate to the proper pressure based on load ratings for your tires. Believe it or not, front to back, and curbside to road side, tire pressure can vary based on the load distribution of the RV.
A scraping or grinding noise suggests an immediate problem. The sound typically occurs when worn brake pads rub against the rotors. The pads definitely need to be replaced. But if you wait too long, you’ll risk allowing the rotors to become damaged. Replacing them is far more expensive.