Need Serious Help - Car driving me crazy

cgreiner · 04-13-2009, 08:23 PM

Interesting. I still have not fixed this problem with my car either. Sorry.

I knew I had a faulty CPS resulting in an oil leak so I changed that. I figured maybe the issue was that I was low on oil and it just coincidently occurred when it rained - often. Not so....

My car would also drop idle just like yours and then violently recover as you know from the earlier post. It would also not seem to occur when I kept RPMS above 3200 or so. Does yours behave similarly?

What is most interesting though is that you have a hole in your downpipe as do I. Now, if I get into the turbo hard, or have a 20 min + drive, my knock sensor and idle control (ICS) have been giving me errors. The car runs great, as long as there is no rain, but I do get a 51 and 52 error code if I drive rough or long. I am guessing that I am producing a high level of admissions under my hood through my downpipe and it is messing with the system? This would sensibly occurs with either high RPMS or over time in traffic. Any merit to this or am I insane?

Maybe that behavior is just a sign that your ICS is going out?

Please let me know if you figure it out as I will be working on it as well over the next few weeks.

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04-13-2009, 08:23 PM	#6
cgreiner 3" Exhaust Join Date: Aug 2008 Location: North Carolina Posts: 63	Interesting. I still have not fixed this problem with my car either. Sorry. I knew I had a faulty CPS resulting in an oil leak so I changed that. I figured maybe the issue was that I was low on oil and it just coincidently occurred when it rained - often. Not so.... My car would also drop idle just like yours and then violently recover as you know from the earlier post. It would also not seem to occur when I kept RPMS above 3200 or so. Does yours behave similarly? What is most interesting though is that you have a hole in your downpipe as do I. Now, if I get into the turbo hard, or have a 20 min + drive, my knock sensor and idle control (ICS) have been giving me errors. The car runs great, as long as there is no rain, but I do get a 51 and 52 error code if I drive rough or long. I am guessing that I am producing a high level of admissions under my hood through my downpipe and it is messing with the system? This would sensibly occurs with either high RPMS or over time in traffic. Any merit to this or am I insane? Maybe that behavior is just a sign that your ICS is going out? Please let me know if you figure it out as I will be working on it as well over the next few weeks.