V6 Missfire Issues
Around a week ago the 156 began to develop a missfire, but only once the car has reached normal operating temperature. Yesterday I had a good look at the car - I disconnected the AFM and took the car for a drive until the car had warmed up. As soon as the engine was started (with the AFM disconnected) I had the red warning light illuminate on the dashboard. The car continued to run perfect until it warmed up, then the missfiring began again.
The only difference between running with the AFM connected and then disconnected is that when it is disconnected, I get the red warning lamp up on the dashboard (injector light), so surely this points to an AFM problem? Also the car does seem to run smoother when cold, with the AFM disconnected. The only reason I ask is because I have heard of Lambda sensors failing, and the crank angle sensor as well - apparently these give the same symptomns as a failing AFM ??? I have done all the diagnosis I can really, without rigging the car up to the diagnostics, so any advice would be great!
Alfa Romeo 156 3.0 V6 24v Lusso (2000)
Lancia Delta HF Turbo IE (1991) - Rust In Peace !