My 2001 cobra has been having some issues lately. I'm ready to get it straightened out soon so I can enjoy this car in this beautiful weather. First off the car has had the engine rebuilt recently. I removed and replaced the engine myself. Had a local builder rebuild the engine.
On cold start-up has problem idling. It wants to die so I have to give it some gas to keep it from dying. After it warms up it idles ok, but has a slight surging problem. After it warms up and I give it gas, then let off, it drops down to like 400 rpms for split second and almost dies, then goes back to normal idle.
The car is running lean so the computer is dumping large amounts of fuel to get the air/fuel ratio correct. So when you give it lot of throttle it blows black smoke out the exhaust. The exhaust is coated with black buildup which I believe is unburnt fuel? Car is also burning oil. I've been told this is from the air/fuel mixture being all screwed up.
The check engine light came on last time I drove it. It was referring to the idle air control valve. I did replace the idle air control valve recently from auto zone. When I unplug the idle air control valve with engine hot or cold, nothing changes. It is getting voltage but not working for some reason.
I need some advise on what to do. Some people say I need a tune, some do not. It acts like a vacuum leak but I've sprayed the complete engine and vacuum lines down with carburetor cleaner and found nothing. Some also say it could be a sensor.
I am hoping someone out here can please help me out. If you really know these cars well and could call and help me, I'd really appreciate that. Just PM me your number and I'll call you. Thanks!
On cold start-up has problem idling. It wants to die so I have to give it some gas to keep it from dying. After it warms up it idles ok, but has a slight surging problem. After it warms up and I give it gas, then let off, it drops down to like 400 rpms for split second and almost dies, then goes back to normal idle.
The car is running lean so the computer is dumping large amounts of fuel to get the air/fuel ratio correct. So when you give it lot of throttle it blows black smoke out the exhaust. The exhaust is coated with black buildup which I believe is unburnt fuel? Car is also burning oil. I've been told this is from the air/fuel mixture being all screwed up.
The check engine light came on last time I drove it. It was referring to the idle air control valve. I did replace the idle air control valve recently from auto zone. When I unplug the idle air control valve with engine hot or cold, nothing changes. It is getting voltage but not working for some reason.
I need some advise on what to do. Some people say I need a tune, some do not. It acts like a vacuum leak but I've sprayed the complete engine and vacuum lines down with carburetor cleaner and found nothing. Some also say it could be a sensor.
I am hoping someone out here can please help me out. If you really know these cars well and could call and help me, I'd really appreciate that. Just PM me your number and I'll call you. Thanks!
