What causes the idle control valve to stick?
What causes the idle control valve to stick?
The problem with this is that the idle control valve can occasionally get little bits of oil blown back through it from the engine breathers causing it to stick slightly. When this happens it can give you poor idling, cutting out, jerkiness on coasting, jerkiness on acceleration, poor acceleration etc.
How does the idle control valve cut down on emissions?
To cut down on emissions the ECU checks the lambda sensor in the exhaust for the mixture and measures out the minimum possible amount of fuel to inject and the minimum possible amount of air to allow to bypass the intake plenum through this valve to get the perfect mixture on idle, giving you a nice smooth idle and no rich smells.
How to remove idle control valve and throttle body?
1. Take the SFi box off by using a 5mm (?) allen key. Sometimes the heads are chewed up on these bolts and you need to cut a groove in them to get a big screwdriver in instead. That can be a pain. You may as well take the whole inlet trunk off as one.
Where are the water pipes under the idle control valve?
For some reason the valve is water cooled in the middle & you will see 2 water pipes underneath the valve, these pipes do not have to be removed. This is what the Valve looks like, viewed from underneath.
Where is the idle air control valve on a Vauxhall Vectra?
It may be the idle air control valve. It’s located to the left side of the throttle body as you look at it. It is silver and cylinder shaped. Tap it while the engine is at idle and see if the revs fluctuate.. This can be removed and cleaned (with carb cleaner) if the revs faulter.
Why does my Vauxhall Vectra have lumpy idle?
It is silver and cylinder shaped. Tap it while the engine is at idle and see if the revs fluctuate.. This can be removed and cleaned (with carb cleaner) if the revs faulter. It sounds as if it could be a misfire, caused by an HT lead, or coil pack (more likely a lead).
What kind of engine is in Vauxhall Vectra C?
The vauxhall 1.8 VVt engine is one of the lasted ECOTEC engines and one of the more reliable, its used in several cars in the GM family…. Comon faults with the car are… Noise coming from underneath the car on the driver side.
Why does my Vauxhall Vectra not Rev over 4500?
If any of the leads have oil on the bottom, this could be the cause. That will be down to a leaking rocker cover gasket. If it does happen to be a cam sensor, it will not rev over 4500 revs, even at a stanstill. Any other sensor should also put the em light on. Steve, RAC patrol. 20 people found this helpful. 90 3 people found this helpful. 90
