Question about 2005 Audi A4

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Need help with Audi A4 2000 1.8t Misfiring and Fuel/Air Problems?

I was driving down the highway when I noticed my car was misfiring and my car started to smoke. The CEL started flashing then stopped after awhile. I checked the codes and this is what I got:
P0300 - Random/Multiple Cylinder Misfire Detected
P0301 - Cylinder 1 Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0303 - Cylinder 3 Misfire Detected
P0304 - Cylinder 4 Misfire Detected
P0441 - EVAP Emission Control System Purge Flow Fault
P1136 - Manufacturer Control Fuel Air Flow Metering
P0411 - Secondary Air Injection System Incorrect Flow
P0118 - Engine Coolant Metering Temp Circuit High Imput
P1128 - Manufacturer Control Fuel Air

I replaced all 4 coil packs and I am still having trouble with it. It is idling really weird and also the brake is having troubles too. I am not sure if this has to do with the problems but the remote unlock is working erratically as well. Please help I am going to take it to a shop tomorrow if I cannot fix it myself.

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Replace the speed idle sensor

Posted on Feb 28, 2009

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SOURCE: mil is on the codes

Multiple Misfires on 4 cylinders

Need a repair shop

That is only a code report,doubt you
have more than one, unless you have
a bad intake manifold vacuum leak

Stop using it before you damage

Posted on Jun 10, 2011

  • 4803 Answers

SOURCE: p0136 p0156 p0401 p0402 p1131 p1151 p0171 p0174

All of that going on all at the same time is not likely at all. Are you sure the engine is actually overheating or is that just what your instrument panel is telling you?
With all of those things going on at the same time, here is what I would do. First I would take a REAL HARD look at the charging system. Goofy stuff like this is often caused by a battery with a shorted cell or an alternator with bad diodes that is feeding AC current into the computer network. The computers tend to do really goofy things when they are suffering from malnutrition.

Once I am satisfied that the charging system is in good condition, then I would clear the codes and go on a road test. If the check engine light comes back on, I would immediately scan the engine controller to find out which of the codes came back and fix it FIRST. Many times, fixing one code can fix ALL the codes. By doing it this way, you are more likely to find which one is your MAIN problem.

If your engine is actually overheating, all I can say is you need to diagnose your engine cooling system to find out why...all of the misfire codes could very likely be a result of the engine overheating and fixing the engine cooling system will most likely fix these codes.

Posted on Sep 28, 2011

  • 116 Answers

SOURCE: 98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+

po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them..... set the plug gap first
i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes

Posted on Dec 15, 2008

  • 51 Answers

SOURCE: start and diesss

p0456: evap system. sensor failure
p0172: evap system. intake blocked
p0778: exaust valve control. solenoid/ecu faukt
p0300: cylinders misfire. check ht/ignition leads
p0301,303,304,305,306: same ht leads

hope this helps..

Posted on Apr 27, 2009

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Ihave a misfire problem but no check engine light or scanner codes. Any suggestions?

Your year--make--model didn't post for some reason? That info would be helpful.
Is the problem more noticeable at idle or going down the highway? How long since a tune-up?
The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum, something of that nature.
You might be able to do a cylinder balance test, see if you have a weak or dead cylinder, then on that cylinder, check fuel--spark--compression.

Feb 08, 2016 | Cars & Trucks

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Engine cylinder #2 misfire and smoke coming from rear of motor and will not start.

Well,you may have an oil leak,but #2 missfire may mean a few things.
Pull #2 spark plug and see what's up.
be sure you are getting spark to #2.
Check for a vacuum leak,also.

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Misfiring on bank 1 3 and 5

misfiring is also from injectors and low fuel pressure. To be all on the same side I suspect injector wiring ( possible loose connection on the ECM). Have a compression test done to delete mechanical problems (valves)

Mar 05, 2014 | Cars & Trucks

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99 Alero 4 cyl. CEL flashing, cuts off while stopped or when slow down to turn corners. Recently started backfiring. Drives fine @40 mph. Went to auto zone and got #3 misfire code.

start with changing your plugs, wires and distributor cap and rotor. If it is the type of system that uses coil overs, then replace coil number three as well. A flashing CEL means that you have a misfire that is bad enough to damage your catalytic converter so get on the one before you have to pay bigger money

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Engine shut down due catalyst prblem

is your mechanic brain dead, he/she is not ASE certified, or it be fixed now.
Cats, (never dogs)
do break up (ceramic type) just for funs and giggles,
just vibration or bumps or hitting any OBJECT on the road can do that.
on my 88 jeep the rear exh mount broke and it shock the cat to DEATH. just a 99cent clamp , bam.
point to
if you drive any car with the CEL flashing that means
the CAT is melting ,diD YOU? its in the operators guide. and what to do , it says stop car, and let it cool and to go slow to nearest sevice,
mine says ,drop off the trailer too. (trucks)

if the engine was running in limphome with huge exhaust heat and air and fuel the cat is doomed, all cars can to that ACT.
next time (if true) stop avoiding the CEL. , scan it and find the errors.
so my guess, is the cat burned up and slagged on you.
the ECU EFI is running rich, and most likely MISFIRING like HELL.
all misfirings when ignored, kills the CAT.
i guess you mech, never seen and engine MISFIRE?
if not , fire him , no, run fast to the nearest ASE shop.

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CEL blinking smoke coming from exhaust, rough idle

White smoke is indicative of burning coolant. Gray smoke is burning oil.

Have a compression test done which will often give an indication of evolving head gasket problems. If the coolant level is going down, and there's no obvious leak, its a head gasket.

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Honda accord ex 2001 check engine light suddenly came on, car started to idle roughly

If it's running rough, chances are that it's misfiring. If the Check Engine light is flashing/blinking, it is definitely misfiring.
If that's the case, drive it as little as possible... Or straight to the mechanic because the more you drive it while it's misfiring, the higher the chance is of you ruining your catalytic converter.

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My 2000 Toyota Echo has the red engine temp light flashing. I checked the coolant container about an hour after I parked in the shade of my house. (95 degrees here today and I was driving on the highway...

a flashing check engine light (CEL) is a warning to stop driving-one that is on steady (not blinking) means something is wrong, but blinking is BAD-make sure it is completely cooled down, and fill the overflow/surge tank, start it up (use 50/50 antifreeze) and let it idle until the engine temp is all the way up-this can take 10-15 minutes, make sure the heater is on high temp setting and the fan is on-look at the temp gauge if it has one to see if it looks normal. If all looks good, fill the tank to the FULL mark (or a hair above it) and put the tank cap on tight. Drive the car for about 10 minutes, and pay attention to the temp gauge-if it looks good, and the engine is alright, the CEL probably with either not light or will go off by itself.

It is possible you did damage driving it with a flashing CEL, however-if so look for leaks, smoke out of the exhaust, poor running/performance, or more ominous signs of trouble like air bubbles in the overflow tank, oil in the antifreeze of antifreeze in the oil-aluminum engines do NOT tolerate overheating, if you ever see a high temp gauge and/or a flashing CEL-STOP and get it checked out, you will save yourself a lot of money being prudent.

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I have a 2003 audi a4 cabriolet 2.4 petrol and it is misfiring, coil pack has been changed twice now, spark plugs have also been changed, oil has been changed and it is still misfiring? It is on and off,...

when its mis-firing it is surley putting engine management light on so get codes read.
also when mis-firing need to check to make sure injectors pulsing usually done with magnistick light. if one not working could be injector or feed/earth from engine ecm. also remove and check continuity of coil packs incase another gone faulty.

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I have a 2005 Ford Focus ZX4 ST. I have less than 73k miles on it. Have never had any issues with it. Perform all the regular maintenance at required intervals. About a month ago the check engine light...

I would start with plug wires rubbing on something and created a short.and is not compleatly worn through. a cheep place to start. good luck with it.

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