Please Help!!!

[the mayce]

I have just recentely bought a 94 SC with 140K miles. The dealer just rebuilt the motor and I have had a few problems with it since I bought it. Just recently the car was overheating and the shop found out the timing cover was cracked, they replaced it and the pump while they were there and know since they put everything back on the front of the motor.....It will barely idle. It will jump between 400 and 700 rpm in a weird heartbeat kind of way until it gets to 1500 RPM then it's fine.If you let it idle for more than 2-5 seconds it will die. Is a vacuum hose off..... HELP!!!

[Digitalchaos]

Hello; and welcome. It sounds like a vaccuum leak is a good possibility, those are usually some of the symptoms. If your gas mileage, boost level, and power is low, those are also indicators. It is especially likely since the dealer probably removed vacuum hoses to repair the engine. Try spraying Throttle body cleaner aroound all the connection points with the engine running. When you hear the idle change, you have found a leak.

BTW, you can recieve more help with tech problems in the technical forum. Goodluck!