high Idle - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

98crownvic_24 · 01-21-2009, 13:35

i was just cruising around the block and all the sudden I come to a stop and the motor is idling very high prob 3-4 K RPM no check engine runs smooth but high idle... I tried to reset the ECU but it still does the same thing. i have not done anything to the car please help

RangerPilot · 01-21-2009, 14:02

I had a similar problem with my Ranger although it was coupled with rough idle on cold starts. Also, the High Idle problem only occurred during cold temperatures...not during the summer.

For the low idle problem, I had leaky Intake Gasket Values (see Ranger Post)

I just got the truck back and it appears the High Idle problem has diminished greatly as well.

You may need to have these gaskets replace OR, it could be a vacuum leak some where else in your system (vacuum is anywhere in the Intake System (lines, hoses, manifolds, etc.))

I would recommend having Ford diagnois the location of your leak (probably $90 bucks) and then if you know someone that is familiar with cars or if you are comfortable with them you can possibly fix the problem yourself without paying hundreds of dollars in labor.

Hope this helps

98crownvic_24 · 01-21-2009, 14:04

we just put a new intake manifold done at ford its all good. the car was running perfect all the sudden it started idling very high

**Bert** · 01-21-2009, 17:03

I'd take it back to Ford and tell them what happened. They might have made a mistake.

98crownvic_24 · 01-21-2009, 19:42

thats not the problem

**jwko** · 01-21-2009, 20:18

Quote:

Originally Posted by 98crownvic_24

thats not the problem

What was the problem?

98crownvic_24 · 01-22-2009, 11:11

im thinkin TPS is off

98crownvic_24 · 01-23-2009, 17:27

leaky manifold those damn plastic manifolds from FORD I hate FORD never buying a ford again, going back to HONDA

**Bert** · 01-23-2009, 19:56

Lot's of cars have plastic manifolds. The problem with the first Ford manifolds was the water tube in front was plastic too.The new ones are aluminum there. We've never had a vacuum leak from one.
I hope Ford fixed the problem.

98crownvic_24 · 01-24-2009, 09:58

it has already been replaced once it might be within 12 months so it might be under warrenty. if not i found a stock mani for 250 or i am looking for a high performance one alluminum one but they go for about 1400 bucks i gotta find something in between