Hi Folks

I cant fix the code P0507. (Idle Control System RPM Higher Than Expected)

Checked in two repair shops, they checked IAC valve, Throttle Body, fixed a couple of Vaccum Leaks. But the check Engine with this code appears again.

When Idle (Normal temp) in Drive the RPMs are about 650-700 RPMs, changinf to Neutral or Park changes the RPM to aprox 1000 RPM.

I have several months trying to fix this. What else can be?

Thanks in advance

You say the shop checked the IAC, was it ever replaced?

Was the throttle stop screw moved at all?

_________________

95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.

You say the shop checked the IAC, was it ever replaced?
A=IAC Valve was not replaced.

Was the throttle stop screw moved at all?
A= I dont know, they cleaned the throttle body but they didnt told me anything regarding the stop screw

I would replace the PCV valve and if that doesn't work try a new IAC.

_________________

95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.

Tnx. Will try

Hi folks

I changed the pcv and run the car for 1 week. Today the check engine light turned off.

Hope pcv fixed the problema

Hi.

Unfortunately the code was shown again.
RPM on P or N are about 1100rpms.

Could be the IAC?

thanks