Question about Cars & Trucks
You neglected to mention model , make and year but most cars idle around the 950 rpm mark or if earlier (pre1990 ) may be as low as 750 rpms
do not always rely on the dash tacho as they are not exactly accurate at the lower readings
use a mechanical rpm counter for ant settings
Posted on Apr 09, 2015
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
The PCM controls idle speed to ensure good driveability. The PCM will only attempt to maintain the desired idle speed when it “knows” the throttle is closed. A throttle switch or the TPS input is used to determine when the throttle is in the idle position. Motors and solenoids are used by most PCM’s to control idle speed. Many PCM’s are programmed to attempt to control the idle speed by adjusting spark timing and then by controlling the idle speed actuator. Some computers of the early 80's did not control idle speed.
Posted on Oct 19, 2008
To update my earlier repair on the 2001 6 cyl Escape: When cold, and when the ignition was turned over but no accelerator pressure given, the rough idle finally returned the P0303 code again when the check engine light came on indicating that it wasn't caused by the plugs or the coil. FYI, I had replaced the intake manifold gaskets during the original repair and just prior to that I had replaced the fuel filter which was very dirty (I cut it open to see).
The repair manual referred to fuel injectors as a possible problem. I have run three tanks of fuel using different injector cleaning products and am very pleased with the results. Cold starts are much smoother and I am unable to coax out the P0303 code or any other code.
My opinion, change the fuel filter, use a fuel injector cleaner for a couple of tanks, change the plugs if the problem still exists. The coils were not the problem on my vehicle.
Posted on Mar 09, 2009
4.9 litre ?? you having a laugh its a 10ton truck engine not a pick up -global warming machine,remove the pump/sender unit and check the gauze filter also look inside tank for a something floating around ,i think the idles is not a related problem to the vehicle losing power but their is a possibility you could have a problem with the little vac operated thing on the fuel injector line that allows the fuel through only when the engine is running
Posted on Mar 15, 2010
Tips for a great answer:
Apr 25, 2017 | Chevrolet Lumina Cars & Trucks
Feb 01, 2015 | 2004 Chevrolet Cavalier
Nov 04, 2014 | 2002 Toyota Avalon
Mar 06, 2011 | 1995 Ford Mustang
Jun 16, 2010 | 2002 Chevrolet Cavalier Coupe
Jan 19, 2010 | 1994 Ford Bronco
Aug 05, 2009 | 2003 Jeep Liberty
Jul 09, 2009 | 2002 Land Rover Freelander
Mar 12, 2009 | 1996 Ford F150 Regular Cab
Jan 02, 2009 | 1999 Daewoo Lanos
55 people viewed this question
Usually answered in minutes!