Hi
This is my second problem. Idle is fine when cold and fine when hot on both petrol and gas. Problem is a very erratic idle during the warm up phase, bad enough to make it stall.If you hold the throttle down a bit and rock steady it make no difference. If you raise the revs above 1000 it slows the depth of fluctuation but it's still there then randomly rights itself. I've run off some codes which showed a duff right bank lambda which I've replaced, otherwise nothing. I've replaced the CTS (not the temp gauge sensor), cleaned and lubricated the idle control valve and for good measure swapped the throttle pot, nipped up the plenum and other intake plumbing and cleaned out the butterfly assembly.
Would appreciate some more ideas please.
This is my second problem. Idle is fine when cold and fine when hot on both petrol and gas. Problem is a very erratic idle during the warm up phase, bad enough to make it stall.If you hold the throttle down a bit and rock steady it make no difference. If you raise the revs above 1000 it slows the depth of fluctuation but it's still there then randomly rights itself. I've run off some codes which showed a duff right bank lambda which I've replaced, otherwise nothing. I've replaced the CTS (not the temp gauge sensor), cleaned and lubricated the idle control valve and for good measure swapped the throttle pot, nipped up the plenum and other intake plumbing and cleaned out the butterfly assembly.
Would appreciate some more ideas please.