2004年4月30日 · 1983 - 2012 Ranger & B-Series - P1504 Intake Air Control circuit malfunction - Hey guys, Im having some trouble with my idle on my '96 ranger 3.0 5 spd. This morning I fired it up and the rpm was very high, (I don't have my tach in yet so I can't tell you exactly where it was.) Anyway, whenever I was at idle, the rpm...

The code, P1504, is related to the idle air control (IAC) circuit. The problem could be electrical, an issue with the IAC itself, or a computer-related issue. If you look at the attached pic, it indicates possible causes for the problem. What I would suggest is following through with the diagnostic flow charts related to pinpoint testing.

2010年10月11日 · Modular V10 (6.8l) - HELP! P1504 - I was driving my F-450 today and after driving for 240 miles I pulled into a parking lot and the engine just died. I started it right up and teh service engine light came on and it will no longer idle. It runs just fine except it wont idle. I checked the codes and it read the p1504....

Escape & Escape Hybrid - P1504 IAC malfunction - Hi Folks, I have a 2001 Ford Escape v6 4x4 with a High Idle (3k+) and a cel P1504 code. I disconnect the IAC and it stalls. I measured the IAC valve resistance and it is within spec. (I tried a new one anyways and the tps as well) Voltage across the IAC valve reads 12...

1997 - 2003 F150 - Code P1504 2002 F150 - I have a code P1504 that came up on my truck and I replace the idle control sensor but after replacing it, the code still comes up. I also checked the IAC to see the circuit is bad or shorted out but it is fine. What else could be possible wrong that the code is still coming...

2004年10月10日 · 1997 - 2003 F150 - code 1504 - i have a 97 ford f150 4x4 4.6 i have scaned the computer and found a code of p1504 does anyone know what this means. LOG IN REGISTER

The scanner showed p1504 when testing, reading man. Cont. Spd. Idle speed control auxilary inputs. Replaced the isc but still reads the same. How does a person check the inputs? Need help figuring this out. Hope you can help. Bill

2009年5月19日 · P1504 Intake Air Control circuit malfunction. P1505 Idle Air Control System at Adaptive Clip. P1506 Idle ...

2021年11月11日 · The code P1504 is for the Idle Air Control Valve and could be directly related to your issue. I have seen where these valves can get gummed up and stuck. Try cleaning it out some carburetor cleaner, the follow the pinpoint tests that I have attached. I also attached a picture of the valve.

KE2 DTCS P0505, P0506, P0511, P1504 OR P1507: (OR STARTS ONLY AT PART THROTTLE) CHECK THE VPWR VOLTAGE TO THE IAC VALVE Note:If EGR DTC P0402 was output during the self-test, diagnose it first before continuing with this pinpoint test. - IAC Actuator connector disconnected. - Key in ON position. - Measure the voltage between: picture 1