Question about 2004 Audi A4

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Clutch/misfire problem Can the master cylinder cause misfire and clutch failure? Day one my car started misfiring (got codes from autozone), next day clutch stuck to floor and now can't get into gear.

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Bring to local garage and let them av a look

Posted on Nov 07, 2008

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I'm getting a cylinder misfire code on my 2007 Nissan Murano. what could be causing this?


9 times out of 10 a cylinder misfire is caused by either a bad spark plug or a bad coil over the plug. If the code told you which cylinder is bad, just switch the coil with the next cylinder and restart the car and rescan a code and see if the new code now tells you that the faulty cylinder misfire is moved to your new location of where you moved the coil to. (cylinder) - If it does you know the failure is with the coil.

Sep 23, 2015 | 2007 Nissan Murano SE

1 Answer

Misfired cylinder 6, replaced coil, plug Misfired cylinder 5, replaced coil, plug Misfired unsure which yet, all of these happening within a week. It will run fine for a day or so after rep


change all plugs with proper ones - they are picky for some reason - do not change number or brand from original - coils were probably ok, - get some injector cleaner and run through it but check for exhaust leak at e g r tube - is a common over looked cause of misfire - a thing to keep in mind is misfire isn't always spark issue. hope I was of some help

Apr 20, 2014 | 2003 Lincoln Town Car

1 Answer

I am trying to diagnose the root cause behind several different codes that the OBD scanner is reading. My car is running fine and great and one day the CEL comes on and I get worried. I take it to AutoZone...


Probably not. A lot of times when you have many different codes on a vehicle that seems to be running great, I'd suggest the actual circuitry that reports codes or something in the computer. Take it to your local dealership and they can do a troubleshooting for you. Autozone CAN test your gattery for you, but I doubt that it isnthe cause. Most Autozoners have only the very basic info...take it from a former one.

Mar 13, 2014 | Cars & Trucks

1 Answer

Audia4t quattro-dies at stop signs and hard starting


Your first mistake is thinking that the only thing that can cause a misfire is a coil or spark plug. Misfires can be caused by MANY things, including faulty fuel injectors, injector control circuits, blown head gaskets, vacuum leaks, burned valves, broken valve springs, low compression due to cylinder damage, worn piston rings, damaged or worn camshafts, etc..

I would recommend getting this problem properly diagnosed by a professional. Failure to fix misfire codes promptly can cause severe engine damage and destroy high-dollar parts like oxygen Sensors, catalytic converters, engine blocks and cylinder heads.

May 11, 2012 | Cars & Trucks

2 Answers

Code po304 car wont start


cylinder 4 misfire ,now if this is a GM product then i think you may need a reconditioned ECU init as if this is the 4 cyl engine and its same as the opel astra and zafiro and the vectra then its a common fault with a 2000 to 2004/5 model the computer is bolted to the engine inlet manifold and very weak and susceptable

Feb 06, 2012 | 1996 Saturn SL

1 Answer

03 ponitac grand am would not start 2 different times, it starts about 10 minutes later, it rolls over but doesn't start. Maybe a fuel pump or crank sensor I don't know any ideas?


Failure-to-start scenarios are often an issue of "fuel or spark?"

To check fuel pump, install a fuel pressure gauge on the Shrader valve connector on the
fuel rail, reading ???? - I couldn't find the spec for nominal fuel pressure.....

One good source of diagnostic info is your car's computer - commect an OBD-II code
reader to your car's OBD-II port and ask the car what it thinks it wrong - its capable of
posting 100s of possible error codes, any number of which would/could implicate a fuel
system component. Here a (very) short list of possible computer codes your car's computer
may currently be posting:

error code meaning
--------------- -------------
P0107 MAP (manifold absolute pressure) sensor - low input (to computer)
P0108 MAP (manifold absolute pressure) sensor - high input (to computer)
P0122 TP (throttle position) sensor - low input (to computer)
P0123 TP (throttle position) sensor - high input (to computer)
P0171 fuel system lean
P0172 fuel system rich
P0201 fuel injector 1 control circuit malfunction
P0202 fuel injector 2 control circuit malfunction
P0203 fuel injector 3 control circuit malfunction
P0204 fuel injector 4 control circuit malfunction
P0300 multiple engine misfire detected
P0301 cylinder 1 misfire detected
P0302 cylinder 2 misfire detected
P0303 cylinder 3 misfire detected
P0304 cylinder 4 misfire detected
P0336 CPS (crankshaft position sensor) range/performance
P06xx control module (computer) failure


Possible bad parts:
TP (throttle position) sensor - Duralast TPS172 $51.99 at www.autozone.com

Fuel pressure regulator:
www.autozone.com/autozone/regairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f8036e816

Fuel Pump:
www.autozone.com/autozone/repairinfo/repairguide/repairGuideContect.jsp?pageId=0996b43f8036e7c7

Fuel Filter:
www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f8036e787

Fuel rail (supply manifold) and fuel injectors:
www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f8036e7a0

Could also be dying fuel pump relay - Duralast 19264 $14.99 at www.autozone.com.
I don't work for Autozone.com - just convenient info for some cars.

Autozone.com will expect you to register (free) to access their repair guide database (which has pictures - especially helpful for finding sensors).

Oct 25, 2010 | 2003 Pontiac Grand Am

2 Answers

The jeep starts misfiring at 40 mph and the check


Hello,
I was having the same problem with my Jeep.... I tried everything and nothing worked... Finally I changed the Crank senor and my problem was solved. You must get this part from the dealer (OEM) in order for your problem to be solved. AutoZone or aftermarket parts will not work...

Jan 04, 2010 | 2002 Jeep Grand Cherokee

1 Answer

1998 Cavalier No Spark in cylinders 1 & 4


ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

Jan 13, 2009 | 1998 Chevrolet Cavalier

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