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400 Series General Forum for the Volvo 440, 460 and 480 cars |
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Car nearly dies when pressing clutchViews : 2529 Replies : 15Users Viewing This Thread : |
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Mar 12th, 2016, 22:28 | #11 |
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Replaced the idle control valve, this has exacerbated the problem, it is now every time I drop the clutch to change down a gear. Idle is still OK and the car recovers itself before stalling.
Could it also be a vaccume problem somewhere? When im changing down I am on the brakes aswell most of the time...
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Mar 12th, 2016, 22:35 | #12 | |
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If the throttle has a lot of carbon around the edge it may well be open as far as it can go , it can only makes minor alteration to the air flow at idle . Try cleaning the bore of the throttle body , OR you could have an air leak into the manifold of course .
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Mar 12th, 2016, 23:00 | #13 |
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I changed the complete throttle unit (butterfly valve, idle controller) that bolts onto the top of the manifold system, this was a know working unit and had been taken from the engine I had in the car previously and had new injector and idle control valve a month before swapping engines over to rectify what now turned out to be a burnt valve and fractured piston.
The butterfly did not open after shutting off the engine and both units where cleaned with brake cleaner. Are these engines prone to manifold leaks or warped manifolds etc?
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what good music deserves is full deep bass to give it warmth. the stock volvo sub works....just at high volumes Drum n Bass and dubstep |
Mar 13th, 2016, 09:45 | #14 | |
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the very fact that the motor does not open the throttle ready for the next start when you turn the engine off means it is not working for what ever reason ... there is a pair of contacts in the switch which after 20 years out of production could be corroded / worn on every single B18U engine out there . There was a mod on the early B18U around 1994 which added a small "amplifier" to the ECU wire near the ECU to help the throttle operation but was standard after 1995 i believe . Also over the years someone could have opened up the throttle manually with the stop screw to get over the failed motor !
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Mar 13th, 2016, 21:15 | #15 |
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Is there an adjustment procedure? The stop screw (if it is the one I'm thinking of) that the injector taps against is fairly well in and the injector "ticks" when you switch tue car off after adjusting it, which I would guess is the motor looking for its new alignment. There was an etch mark on it that would suggest that it has been tampered with to account for a bad motor? Unfortunately I cannot be sure.
After that are there any other checks I can make? The throttle does open back up. When putting my foot down in neutral the engine stutters then revs up no matter where that stop is. The car is back at its storage untill the mot on Tuesday.
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what good music deserves is full deep bass to give it warmth. the stock volvo sub works....just at high volumes Drum n Bass and dubstep Last edited by Anadinolin; Mar 13th, 2016 at 21:18. |
Mar 13th, 2016, 21:20 | #16 | |
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