Originally Posted by meyersm15
I recently bought a 1994 Ford F150 from its 2nd owner. The original owner was very meticulous on the maintenance. The truck is extended cab, duel fuel tanks, 5.0 L V8. When I start it cold, it fires right up with the RPM's reved up as normal. About 30 seconds into it, the RPM's die way down to almost nothing and then come back up again. Sometimes is will actually die altogether. When this happens, you can start it right back up and it is totally fine after that. Can anyone help me with any suggestions?
Thanks for the help!
Your IAC is probably dirty -- My 92 used to cold start then die... youd have to gas it to keep it alive... this fixed things for a while but eventually youll have to pull the IAC and clean it...
someone once said 'dirt happens'...