940 Idle air control valve.

peterking · Jul 9th, 2007, 20:33

The valve is not moving at any RPM. Rev counter is working. Valve operates if fed 12 volts externally. Both terminals read 12v regardless of RPM. Tickover has been obtained by moving throttle stop screw. Clues please.

niloc · Jul 10th, 2007, 02:28

Firstly, what year is the car, what engine, what are the symptoms of the fault you have?

peterking · Jul 10th, 2007, 10:29

Hi. 1977 940 2300 turbo has no tickover, it just fades away when foot removed unless throttle stop screw is misadjusted to keep butterfly open a bit. The throttle position switch is working or would do if not prevented by stop screw misadjustment. Engine runs fine.

CTCNetwork · Jul 10th, 2007, 10:41

Hi,

1977? I take it to mean 1997?
What is the engine designation on the cambelt cover/housing. Should be B230FT or B230FK??

Des. . .

peterking · Jul 10th, 2007, 14:48

Hi. Rejoice with me because the fault has been found to be a fractured wire on the throttle position switch connector. Now cured and all well. Thanks to contributers.

Jul 9th, 2007, 20:33	#1
peterking New Member Last Online: Aug 11th, 2009 21:36 Join Date: Jul 2007 Location: Holsworthy	940 Idle air control valve. The valve is not moving at any RPM. Rev counter is working. Valve operates if fed 12 volts externally. Both terminals read 12v regardless of RPM. Tickover has been obtained by moving throttle stop screw. Clues please.

Jul 10th, 2007, 02:28	#2
niloc SWV Benefactor Last Online: Jan 30th, 2013 13:44 Join Date: Dec 2001 Location: Newport, South Wales	Firstly, what year is the car, what engine, what are the symptoms of the fault you have? __________________ Refitting is the reverse of removal???.....Yeah, right!

Jul 10th, 2007, 10:29	#3
peterking New Member Last Online: Aug 11th, 2009 21:36 Join Date: Jul 2007 Location: Holsworthy	940 Idle air control valve Hi. 1977 940 2300 turbo has no tickover, it just fades away when foot removed unless throttle stop screw is misadjusted to keep butterfly open a bit. The throttle position switch is working or would do if not prevented by stop screw misadjustment. Engine runs fine.

Jul 10th, 2007, 10:41	#4
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, 1977? I take it to mean 1997? What is the engine designation on the cambelt cover/housing. Should be B230FT or B230FK?? Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Jul 10th, 2007, 14:48	#5
peterking New Member Last Online: Aug 11th, 2009 21:36 Join Date: Jul 2007 Location: Holsworthy	940 Idle air control valve Hi. Rejoice with me because the fault has been found to be a fractured wire on the throttle position switch connector. Now cured and all well. Thanks to contributers.

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