Check Engine Light

It's a question. "Can you see [something; in this case, the flag] by the dawn's early light" means "can you see by the first light of dawn (or, by the first light of daybreak)." The first part of that question reads thus: "O! say can you see by the dawn's early light

What so proudly we hailed at the twilight's last gleaming" Stated in other words, what that is asking is, "Hey, in the first light of day, can you still see what we were looking at so proudly last night when the sun set?"

Trouble code P0302 means:Cylinder 2 misfire detected

Because your foot is on the gas and something is wrong with your engine.

Sounds as if the starter bendix is staying engaged in the fly wheel. Possible wrong starter or starter needs shimmed down out of the fly wheel .

It is probably the coil pack. To find out for sure remove the coil pack from number three and switch it with the coil pack from number four. Run the engine for awhile until the light comes back. If the new code shows that the problem has moved  to number three, you know that coil pack is bad. Otherwise it is probably the wire or wire connector going to the coil pack or possibly a bad spark plug. Good luck

Use a code scanner to find out why the light is on.

In many cases the fuel cap is at fault, or a cracked vapor/vacuum hose.

You can go to your local auto store (auto zone, advanced auto parts) and they can read the code and reset it for you.

There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.

You have to find out what is causing random misfires in the engine.

See related question below.

Thunderbolt symbol

P0400 - Exhaust Gas Recirculation Flow Malfunction

Possible causes

- Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted

- Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection

- Exhaust Gas Recirculation (EGR) volume control valve stuck closed

- Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve

- Dead (Weak) battery

- Faulty EGR temperature sensor and circuit

- Faulty EGR Valve

it could be your emission check sensor

It's important that you run a computer diagnostic test to see what the computer is reporting. When the check engine light comes on it's telling you that the computer has "stored a problem code" meaning that you're supposed to check into what's going on. In general, the computer will know quite a bit about what's wrong, but it can't tell the difference between out of fuel, a blocked filter or a failed fuel pump. On the other hand, it could be a throttle position sensor or an ICM and the computer WOULD know what's wrong or at least point you in the right direction.

I am not a professional with a professional opinion. However, I do know how a fuel pump works. No possible way for ignition. At least, no worse than having fuel in there while driving down the free way.

I work in Aviation. Hot-fueling is a common practice. (Fueling with props or heli-blades still rotating.)

They recently banned it at my airport but only because the blades or props are the danger. Someone could walk into them, drive into them, or throw something into them. In my opinion, there is no danger here. Any other thoughts?

Clear all PCM codes.

what year is your saturn? I am having the same problem with a SL2 yr 2000 and I have had three mechanics look at it and they are baffled. Saturn says to use the factory plugs and wires, but those are so cheap I cant imagine this is the problem. I have had the coils replace, intake manifold, no vacum leaks, EGR valvue done and the list goes on. you need to have a scanner that is capable of producing the data stream to evaluate what is happening when the mis-fire occurs. There are many possiblilites of the source. I would address maintenence items if your going to start guessing and replacing. Such as spark plugs, ignition wires, air induction cleaning, fuel injection cleaning. Pay attention to the condition of the plugs that are currently in there, they may tell you a story about where the problem may lie. These saturns are very common for coolant temperature sensors that are an input to the ecm and make air/fuel adjustments. Many times they crack. pukenstein@aol.com

PO442 Emissions Control Leak (small) Error code can be caused by one of the following: 1. Defective or loose fuel cap 2. EVAP canister or hose cracked- not connected 3. Purge or vent solenoid defective 4. Vaccum leak at engine
PO442 Emissions Control Leak (small) Error code can be caused by one of the following: 1. Defective or loose fuel cap 2. EVAP canister or hose cracked- not connected 3. Purge or vent solenoid defective 4. Vaccum leak at engine

P1700....Malfunction Indicator Lamp requested by trans control module

On my 1999 Chev Suburban the answer is the fuel filter. It appears when going uphill and trying to give it a lot of gas the engine is not get enough and misfires. I replace the fuel filter and the light goes away. It comes back after a while and I just change the fuel filter. I have 227,000 miles on my suburban

Problem with one or more of the components in the emission system

Have vehicle scanned to determine the problem

Repair the problem.

here comes the bubble buster,,, YOU DONT

it sounds to me that your truck jumped time which means you could have a bad timing chain it also depends on how many miles the truck has and has it ever been replaced b-4 but i would say you need to replace the timing chain.