1997-2006 Expedition & Navigator - P1506 obd code question - After getting p1506 overspeed code. but retrieved code #p1506 idle air control over speed malfunction. idle around 2300 rpm with the iac hooked up and hiccups randomly. Occasional roughness after sitting at stop in gear with AC on but much different than before. Use steel round wire brushes, small picks, etc. I get p0171 Lean bank 1 code both times on the highway 2698 RPM car does idle high but only when cold. Was driven 1 mile following day and it died while driving. Hi, i have a 98 ford escort with 160,000 miles on it. The problem still remained. The P1506 code means that the engine idle is out of factory specification. Disconnect the car battery, remove the. The P1506 code came back a few days later any suggestions on what else to look for. asked Nov 18, 2018 by Mark. . Still runs like that. p0171 Have a 2002 Ford Escort 2. When the IAC is plugged in, no rough idle. Unplugged the IAC, and let the vehicle idle Result: Idle stayed between 500rpm - 700rpm while IAC was unplugged, but was very rough. 0 engine, have ahad an idle air control code along with others. The P1506 code means that the engine idle is out of factory specification. Disconnect IAC valve and look for little or no change in engine rpm as an indication of a stuck or damaged valve. 9k questions 32. replaced the Idle control valve. 2 volt result and a normal idle! We can not duplicate this with 2 new IACs (7. Remove the idle air control valve and clean it with carburetor cleaner and check for vacuum leaks. Forums. 1995-96 CONTOUR, CROWN VICTORIA, ESCORT, TAURUS, THUNDERBIRD 1996 MUSTANG LINCOLN-MERCURY: 1995-96 CONTINENTAL, COUGAR, GRAND MARQUIS, MARK. 4L HIGH IDLE PROBLEMS. check the resistance. Plugging off holes in the throttle body to try and fool the computer is just a bad idea and can lead to further problems. C. Installed a new IAC valve and checked plugs they were wet. PO-356and PO-506 please help me I ve changed the plugs and coil packs and still the same codes. thank you for the question hope this helps. 0L SOHC. Should I just change the Idle Air Control? I’ve had errors like this before and it never seems to be. Check out the Drive’s Garage Guide to identify the signs of a bad idle air control valve. After a few months the check. Use a length of fuel hose to your ear to listen for the leak. I replaced the cap and everything was great. Dec 05, 2017. 3l i changed the iac cleaned the throttle body checked for vac leaks but still have a p1506 code my name is frank Show More Show LessP1506 - Idle Air Control. Code 1506. Go over the vacuum lines and look for weak collapsed lines, broken, or poorly seated. Ok so I changed idle air control (IAC) and it still has the same problem man. 0Lstill get P1506. Top. 0 answers 376 views. 0L DOHC Duratec engine. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. 9L F150 idle problems. C. Check engine light. 1999 Ford Escort 2. I have: - replaced the AIC (the old one looked fine, didn't seem to be sticking or dirty). You may need to let the engine run for a few minutes in order for it to come down to its normal idle speed. . just put a motor in it with less miles to replace blown motor. to regulate the rpms with gas pedal if you can make the car idle. replaced the iac valve. 5L, I have consistantly pull the gas after start or it won't stay started. changed the IAC and now have this code wi. The P1506 code means that the engine idle is out of factory specification. While checking injector pump lift pump pressure I noticed that the pressure would drop right off at the 2000 rpm, maybe a lift pump. I start the car, it jumps to 22k rpm. The P1506 code means that the engine idle is out of factory specification. changed the IAC and now have this code wi. 0L SOHC replaced the iac valve. To diagnose the P1506 code, it typically requires 1. Currently no engine code, but it did put out P1506 and I had the IAC valve replaced by a Ford mechanic. P1504 Ford -ESCORT ENG CODES P1504 & P1506. engine codes p1351&1359,crank posistion sensor, ignition module and pcm have all been replaced. read moreI have a 03 ford taurus that had a code P1506, replaced the IAC cleared the code. P0751 code for an escort,indicates a problem with Shift solenoid #1 in the trans,more testing is required for this code. P1506 fault code light is still on after replacing IAC. Sometimes the Idle Air Control (IAC) may have carbon built up. control valve. . Most often this is due to a sticky IAC control valve. Code P1506 1998 Ford F150 Tech Notes. Code P1506 2000 Ford F150 Tech Notes. 9 high idle, no change when Iac unplugged, maf unplugged lead to low low idle and stalling, replaced maf no change, cleaned iac no change. If resistance is less than 5 ohms, go to next step. . 98 Ford Ranger XLT 4. p0171. Helpful 1 ;. 223 satisfied customers. New MAF, new IAC - Answered by a verified Ford Mechanic 95 escort 1. IAC has updated its Ask the Experts: Influenza web page to reflect important Q&As about updates to Advisory Committee on Immunization Practices (ACIP) recommendations for influenza vaccination for the. code p1506-Idle air control… 1996 Ford Ranger 4 cyl. asked Apr 28, 2018 by anonymous. It’s still horrible. and no more codes. I have a 99 Ford Escort with a split-port 4-banger (not original motor) that has been giving us some problems. . . Finished replacing IMRC mark 96 4. At throttle openings of 2% or less, these systems base their calculation of appropriate air/fuel ratio on idle air control valve position. 7k. Good fuel pressure. Where is the IAC valve located on a 2003 Ford Taurus 6 Cyl?. I had problem for a code p1506 than I bought me a new iac than the engine light still come up. i have a 1999 ford escort with a 2. Welcome Visitor! Please take a few seconds and Register for our forum. to reset computer, no change. And you can maintain it under source control with commits at each code change. C. remove no1 spark plug and drop long thin screwdriver down it to bring piston just below tdc,then align cams so both cams are on the rock (valves closed) with knob on back cam aligning with pick up sensor left side between lobes. rickbeachboy Posts: 2 Joined: Thu Apr 15, 2010 2:45 pm. . 3 it has no vac leaks all timing marks are ligned up it idles to high and keeps giveing p1506 idle air control overspeed err and id protacol pwm . still getting code for P1506. . . If I take. Changed iac and still have p1506. It still runs with a high idle for 3-4 seconds after releasing the thrott. Also, did the P1506 come back with the new IAC? Top. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. the hot idle is around 1050-1100 rpm in park/neutral andXXXXX checked for vacuum leaks or plugged pcv system npf. Replaced iac valve, still get p1506 code and check engine light. Engine does sound a little off. - Answered by a verified Ford Mechanic. El conjunto de la válvula IACV o válvula de control de aire de ralentí funciona mediante el control de la velocidad de ralentí del motor y proporcionar una función dashpot. The P1506 code means that the engine idle is out of factory specification. Changed Idle air control Egr valve, plugs wires, PVC, hoses, checked for leaks, new fuel pump/not filter yet. Checked for spark and had good spark. p1506; p1504; 0 votes. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned. Sometimes the Idle Air Control (IAC) may have carbon built up. 6 V8 I m getting 3 Code s po351. I have a scan tool so I checked the codes before starting. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned. i had the same prob except it would idle lower, my pressure was running 24-26lbs instead of 30lbs. Code Reader show - P1400 DPFE - Differential Pressure Feedback EGR Circuit Low Input. 2000 taurus coding with p1506. I'm talking 2500 rpm and above. The P1506 code means that the engine idle is out of factory specification. replaced and cleared kam- no. 3k comments 22. 9L V8. Have to get ride of all vacuum leaks first Not sure on location,but it should be on or near the Dtc p1506 code came on so i changed iac valve now p1506 ,p0171,p0453,01131 is now on why. I have a 1999 Ford Escort with 160000 miles it has an obdII code P1506. After playing with the IAC for a while I started it up and finally got a code P1504 Intake Air Control circuit malfunction. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. When I decelerate (neutral/clutch in), the idle sits at about 2000 until I come to a stop, at which point it drops down to 1000. Engine had a tune up and told IAC valve needs replaced. 056 change the fuel filter also. The vehicle has some years on it. Search Fixya. I'm talking 2500 rpm and above. Changed plugs and coil to fix other codes and had the IAC come back. DTC P1506 is “Idle Air Control Overspeed Error(see P0506)”. P1506 - Idle Air Control. Idle is to high. The P1506 code came back a few days later any suggestions on what else to look for. Did some research and the code refers to the IAC. 99 FORD ESCORT. With engine still running, touch the unattached lead to the positive pin of the battery: the vacuum should jump up to approximately 20 inches. i have a 1997 ford ranger with a rebuilt 2. The P1506 code means that the engine idle is out of factory specification. lights po171, po401, p1506 now off. should be about 35 lbs while idling. The P1506 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. 2002 Ford Escort: idle air control code. The cause. 2002 Ford Escort: idle air control code. 1. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned. Changed plugs. Replaced IAC. Last night, I disconnected the IAC, the idle dropped about 200 rpm (to 1000) but is smooth as glass. 2002 Ford Escort: idle air control code. 8 helpful. the RPMs drop to like 4 or 5 hundred, then shoot up to 11 or 12 hundred. I have a 2000 Merc Mountaineer 2WD 4. If the ECU detects a problem in the system, such as engine idle speed being higher or lower than expected for the IAC opening, it will set a DTC. 8L, or 7. Hi, i have a 98 ford escort with 160,000 miles on it.