Joseph Buttigieg
New member
- Joined
- Jan 1, 2012
- Messages
- 66
- Points
- 23
My Marea starts badly when cold. I have to crank about 6 or 7 seconds before it takes off. Then the rpm starts fluctuating wildly between 500 and 1500 before it stabilises at 850, unless I help it by giving some gas.
I have removed and cleaned the idle valve on the throttle valve body but it won't help. Spark plugs are brand new.
The coolant tem. sensor should also be fine as the temperature gauge on the dash reads ok.
Any ideas what I can check more? One thing, the exhaust manfold is cracked causing leakage, could this be the cause? Does the lambda sonde measure the % oxygen or its amount? If it's the % then I think that a cracked manifold shouldn't have any adverse effect.
I have removed and cleaned the idle valve on the throttle valve body but it won't help. Spark plugs are brand new.
The coolant tem. sensor should also be fine as the temperature gauge on the dash reads ok.
Any ideas what I can check more? One thing, the exhaust manfold is cracked causing leakage, could this be the cause? Does the lambda sonde measure the % oxygen or its amount? If it's the % then I think that a cracked manifold shouldn't have any adverse effect.