Idle surge

Idle surge was created by 1275rob

Posted 2 weeks 6 days ago #209802
Hi folks I’m after some advice. I have a 1.8VVC fitted with a 48mm alloy TB & aftermarket air filter. I have recently done a full service, fuel filter & cambelt change. Car starts fine, warms up correctly & drives good, problem I have is at idle after warm up I get a surge now & again up to about 2K & if left longer the idle becomes rough & stalls. I have another VVC & have swapped the IACV & reset it & also the TPS & it’s still the same. Any advice would be welcome, thanks. 
by 1275rob

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Replied by Roverlike on topic Idle surge

Posted 2 weeks 6 days ago #209803
When that happens have you tried to disconnect both hydraulic control valves - solenoids and see if that will resolve the problem? If it does you have 2 solenoids which needs replacement.
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Replied by 1275rob on topic Idle surge

Posted 2 weeks 6 days ago #209804
I’ll give that a try, thanks.
by 1275rob

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Replied by 1275rob on topic Idle surge

Posted 2 weeks 5 days ago #209829
Well I tried it but it was the same, however whilst rooting around I found that my air temperature sensor was unplugged from the inlet manifold & someone before me shorted the plug terminals together, no idea why. Anyway I have plugged it back in & it’s running okay now.
by 1275rob

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Replied by Notanumber on topic Idle surge

Posted 2 weeks 3 days ago #209841
Well done for finding the cause. I wonder why that had been done.

Have you got any more work planned on the car?

2003 TF 135 sunstorm

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Replied by 1275rob on topic Idle surge

Posted 1 week 1 day ago #209995
Sorry for my late reply, I’ve been away. Done quite a bit of work, changed front lower wishbones & bushes, all drop links & arb bushes, new back box, ns rear sill welded, underside under sealed & cavity wax to box sections, loads of other little jobs. I’ll get it mot’d soon & see how I get on. It’s been off the road for about 8 years but it’s a nice car & deserves to be saved. 
by 1275rob

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Replied by TA22GT on topic Idle surge

Posted 1 week 1 day ago #209996
From what you have done and are planning to do you will have a great car soon!
Good luck..hope all goes well for you.
by TA22GT
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