» Site Navigation | | » Recent Threads | | | | | | | | 09-29-2010, 10:18 PM | #1 | Senior Member Join Date: Sep 2008 Location: Prospect Heights, IL Posts: 188 | Codes 1550, 1509, 1140 Ive been having idle problems for almost a year now, I changed my ICV today and it didnt seem to help. Idle is bouncing from 900-1250. These three codes popped when I had the mechanic check, any ideas? p1550 p1509 p1140 Thanks for the help in advance __________________ | | | 09-29-2010, 11:00 PM | #2 | Senior Member Join Date: Sep 2008 Location: Prospect Heights, IL Posts: 188 | Also if someone could post a pic of where the MAF is located, I found out that 1140 has something to do with the MAF so im going to attempt to clean it. __________________ | | | 09-29-2010, 11:59 PM | #3 | Moderator Join Date: Mar 2007 Location: Maryland Posts: 3,220 | check my build thread for the p1140 i think | | | 09-30-2010, 12:27 AM | #4 | Senior Member Join Date: Jul 2009 Location: MD/PA/DC Posts: 1,629 | The maf is the sensor mounted on the air filter housing. P1140 Mass or Volume Air Flow Circuit Range/Performance Problem P1509 Idle Speed Control Valve Opening Solenoid Control Circuit Electrial P1550 Idle Speed Control valve Closing Solenoid Control Circuit Electrical Sounds like a wiring problem for the ISC valve. The 1140 could be a vacuum leak. Check the intake boot and all the vacuum lines on the intake. __________________ No more ti. | | | 09-30-2010, 03:47 AM | #5 | Senior Member Join Date: Sep 2008 Location: Prospect Heights, IL Posts: 188 | How do I check if the wiring is faulty? __________________ | | | 09-30-2010, 04:24 AM | #6 | Senior Member Join Date: Feb 2007 Location: TAMARAC, Florida Posts: 191 | I had the p1140 code that i fixed this years also. mine was caused by a vacuum leak between the upper and lower intake manifold, had to take it a part and rtv the gaskets to seal it up. code went right away when i was done. __________________ 96ti M52 swap soon to come. Kahtech smart lane changer, H&R springs, Belstein shocks, ACS shift knob, e-brake and pedal set, chrome cluster rings, 6000k CCF angel eye, RT-50A rain sensing wipers w/ auto headlight control http://www.cardomain.com/ride/2928485 | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |
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