C180 Idle

[202fan]

My 1996 C180 (63K) refuses to idle. Apart from the lack of idle, the engine runs fine.
The idle problem occurred immediately following a change of battery (brought on by the first autumn chill!). The battery was out of the car for over an hour, whilst a beeping sound eminated from the left hand side of the engine compartment near the firewall.
I have tried WD40 on the throttle linkage area and the microswitch (after searching this forum). The idle came back briefly, then failed.

My question is:
How should I proceed with this problem. Should a diagnostic on the engine management system be the first step?

Thanks in advance.

 

[television]

It may need the fault code erasing from the system, or you could try disconecting battery for 5 mins

Malcolm

 

[202fan]

Thanks, Malcolm.
Disconnecting the battery did the trick.