I have to fix my mothers 1999 Hyundai Elantra �
I am not a novice to these cars � I own a 2000 elantra with 175k � have replaced almost every part and touched every screw.
Her car is 1999 Elantra with 55k � automatic �
What she did � she drove with the engine light on for about a month before telling me. I got the error code which was - P0441 - Purge Control Valve. Before I could replace the purge valve � she says the engine died on her when she was driving to work. She says the exhaust manifold got cherry red. Then had a mechanic tow it and told her it�s the engine CPU and would cost over $1k to fix.
I don�t live with her so � now I get my hands on it. Starts right up but runs extremely rough. New engine code exists � P0303 - which is cylinder 3 misfire. Doesn�t sound like a misfire but I removed the flex pipe (right after the cat) and the exhaust smells like its running rich. Also can see red ambers coming out of the exhaust manifold (remember I removed the flex)
I replaced the CPU and Purge Control Valve which had no effect on the engine (I did reset the CPU after each). I have looked up the issues from PO303 but plugs and wires are fine (been replace 15k ago) � It seems to be lacking power but compression test seems ok? �
I will check for spark coming off the coil pack for each cylinder.
What else can I check or troubleshoot on this ? Anything else to look for to narrow this down? I not trying to just randomly start replacing parts �lol.
I am not a novice to these cars � I own a 2000 elantra with 175k � have replaced almost every part and touched every screw.
Her car is 1999 Elantra with 55k � automatic �
What she did � she drove with the engine light on for about a month before telling me. I got the error code which was - P0441 - Purge Control Valve. Before I could replace the purge valve � she says the engine died on her when she was driving to work. She says the exhaust manifold got cherry red. Then had a mechanic tow it and told her it�s the engine CPU and would cost over $1k to fix.
I don�t live with her so � now I get my hands on it. Starts right up but runs extremely rough. New engine code exists � P0303 - which is cylinder 3 misfire. Doesn�t sound like a misfire but I removed the flex pipe (right after the cat) and the exhaust smells like its running rich. Also can see red ambers coming out of the exhaust manifold (remember I removed the flex)
I replaced the CPU and Purge Control Valve which had no effect on the engine (I did reset the CPU after each). I have looked up the issues from PO303 but plugs and wires are fine (been replace 15k ago) � It seems to be lacking power but compression test seems ok? �
I will check for spark coming off the coil pack for each cylinder.
What else can I check or troubleshoot on this ? Anything else to look for to narrow this down? I not trying to just randomly start replacing parts �lol.
Apr 8, 2010 at 7:40 PM
