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200 Series General Forum for the Volvo 240 and 260 cars |
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tickover problemViews : 294 Replies : 3Users Viewing This Thread : |
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Mar 13th, 2019, 20:52 | #1 |
Junior Member
Last Online: Mar 24th, 2024 11:51
Join Date: May 2011
Location: lichfield
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tickover problem
my 1993 torslanda has developed an odd problem
starts fine.ticks over when cold fine but when warm sometimes the revs wont drop below 1600 doesnt affect the running.no stuttering.picks up fine and then after four or 5 miles tickover drops to normal at about 900 any suggestions? |
Mar 14th, 2019, 09:28 | #2 |
Not an expert but ...
Last Online: Today 10:11
Join Date: Dec 2001
Location: Boncath
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I get that periodically. It's always been the idle air valve - alloy can underneath the inlet manifold - sticking.
It's easy to remove and clean -squirt WD40 into it and use a small brush to wipe the accumulated dirt clear of the rotating vane. You can rotate that through the end hole with something soft, like the wooden end of the brush. Rotate the shutter open and squirt WD40 generously to wash it out, checking that it snaps back nearly closed when released. Don't be tempted into fiddling with the idle speed screw - that's preset, idling is controlled by the IAV. |
Mar 14th, 2019, 09:58 | #3 |
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Last Online: Mar 24th, 2024 11:51
Join Date: May 2011
Location: lichfield
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thanks clifford
will have a go this weekend |
Mar 19th, 2019, 19:27 | #4 |
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Last Online: Mar 24th, 2024 11:51
Join Date: May 2011
Location: lichfield
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did as clifford suggested. amazing amount of crud in there
cars running beter thanever thank you clifford |
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