MustangWorks.com : Ford Forums - View Single Post

Harry · 12-08-1998, 10:26 AM

When I first start my 92 F150 in the mornings, the idle speed changes. It will start really slow, about 800RPM, then surge to about 1600RPM, then back to 800 then back up. It will do this until I finally start to drive it. When it is warm, it idles just fine, this only happens when it is cold (engine, not outside temp). Should I be concered about this? Is there a problems I should have checked out? BTW, it is a 5.0 engine and has about 93000 miles on it.

12-08-1998, 10:26 AM	#1
Harry Registered Member Join Date: Oct 1998 Location: Dayton, OH USA Posts: 678	Warm up idle speed When I first start my 92 F150 in the mornings, the idle speed changes. It will start really slow, about 800RPM, then surge to about 1600RPM, then back to 800 then back up. It will do this until I finally start to drive it. When it is warm, it idles just fine, this only happens when it is cold (engine, not outside temp). Should I be concered about this? Is there a problems I should have checked out? BTW, it is a 5.0 engine and has about 93000 miles on it.