D90 won't idle after changing battery

[palladio]

My 1997 NAS D90 wagon sat unused for eight months while I was away. When I returned it ran and idled fine with a jump start, but the battery wouldn't hold a charge. I went to Autozone but they said they didn't have a battery for it. Took it to a local independent repair shop that works with Land Rovers and they put in a larger "commercial" battery. Now it starts fine but won't idle. I have to hold the brake and use some throttle or it will stall at traffic lights. Could this be due to an improper battery type? If not can I adjust the idle myself?

I put some fuel injector cleaner in with a tank of gas, but that didn't help.

 

[joey]

Clean the Idle Air Control and the Throttle Position Switch.

 

[palladio]

Clean the Idle Air Control and the Throttle Position Switch.

Can you tell me how to do this or point me to a resource on the web where I might learn how to?
Thanks

 

[joey]

http://www.landroverworld.org/forums/showthread.php?t=16547

 

[Disco Mike]

Also, check/clean the carbon fron the idle control unit" IAC " and if it is still off, then have a mechanic reset the adjustment between the IAC and the ECU using a specific shop scanner.