A flashing CEL (check engine light) means the computer is recognizing a "catastrophic failure" in your emissions system, warning you of the possibility of severe damage to your catalytic converter(s). The power loss could be a number of things, but the knocking, combined with the flashing light, means there is a severe problem with one (or more) cylinders. Get your vehicle towed to a shop for full diagnostics.
SOURCE: 1999 cougar two diagnostic codes p0430 and po420
if you go to your public library they can give you the car repair manual to use and it will have to diagnostic codes listed, if that is any help to you, but i need to know what size tires are on that car. i just bought one and it needs tires badly, and i am not sure that the tires on it are right.
SOURCE: Check engine code 1407
two people told me it was the egr valve
one guy said he replce the hose and it worked for him
I hope this helps
SOURCE: engine stalls after cold start-up & release from high speed idle
I had a similar problem. I found the filter cartridge below the pcv valve had carboned up, and after the crank case pressurized, oil was forced out the pcv supply line to the throttle body. The idle air control valve solenoid got oil in it and caused my problem, but only when it was cold. The pcv cartridge is accessed by removing the pcv valve and the rubber fitting that the pcv valve mounts in. It can then be fished out with a pick set, and it is a pain because you can't see it, but you can get you hand back there. I hope this helps you.
SOURCE: car idles low, stalls after start
Common issue at the shop (i'm a ford technician), here is what I do to correct it.
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
SOURCE: 2002 mercury sable DOHC check engine light
A flashing light indicates that the engine is misfiring enough to damage the catalytic converter, this needs attention ASAP, otherwise after the misfiring is repaired, you will be buying a new catalytic converter, the damage may have already been done. as for the p1633 has the battery run low and you had to jump it off, or recharge the battery?
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