Question about Ford F-150

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My 2002 f150 is idleing to low id like to know how i can make it idle higher

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Is it a 5.4 or 4.6?(shouldn't matter) idle speed should be about 750 to 900rpm. you could untighten the TPS and slightly turn it while the truck is running clockwise to gain some rpms and it would make it respond better when giving gas. its better to use a volt meter to get it to .99 volts but you can do it by listening also just might not hit the .99 volts i would have to look to see what i set it at.

Posted on Aug 07, 2010

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If the motor is cold it will have a higher idle. If the battery has a low charge, the computer will tell the motor to rev higher to get the alternator pushing out higher voltage to charge it.

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Clean the Throttle Body with CRC Throttle Body Cleaner

If you have an IAC Valve (idle air control solenoid) clean it first & see if that helps with the idle

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Oil gauge drops low at idle


Low oil pressure at idle can be caused by an engine with worn rod or main bearings due to (usually) high mileage . This however does not mean the engine is still not serviceable as long as the oil pressure is low only at idle. The pressure should at minimum get into the normal range at anything above idle speed.Not much oil pressure is really necessary at LOW speed. At low speed, as long as there is oil getting to the bearings, even at low pressure, you are OK. In a high mileage engine the oil pressure is often low at idle simply because the oil pump is turning slowly and cannot maintain higher pressure between the larger than normal crankshaft and bearing clearances. As speed increases the pump turns faster and supplies more oil and the pressure should go higher. Low pressure as long as it is only at idle is not a problem. However at higher speeds the pressure should be in the normal range. Such a worn engine can benefit from higher viscosity (thicker) oil such as 20W-50 in above freezing weather and 10W-40 in winter. That will increase idle pressure and the thicker oil film maintains a better film between the worn parts

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I have a 95 f150 and it has a tendency to idle at 1100 rpms in park. i clean the idle position sensor and that didnt help. also it seems like it has no power when i drive it and i'm not getting very good...


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The flashing is the transmission reporting a problem. Only way to figure it out ( that I know of ) is to have the transmission looked at.

The flashing is generated by the PCM, which controls the engine and transmission. Without a CEL, the general engine state is fine ( no P codes, I would suspect the CEL to be illuminated with B-Body Codes also )

If I had to take a complete guess, I would say this is the Torque Converter Clutch solenoid in the transmission by the description of the symptoms ( flash at low idle )

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1 Answer

How can i adjust the rpms so it can idle higher because its too low?


If it's idling below 800 RPM, I'd worry. Otherwise, it's OK between 1200 and 800rpms. This could be any number of problems. But if you really want to increase the RPM idle, you can adjust the Throtle cable. I wouldn't recommend doing this unless you know exactly what you are doing.

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1 Answer

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fix the idle speed to 850-900 rpm
check the alternator and voltage regulator as the voltage should read 14.5-14.8 volts dc at 1000rpm or higher regardless of what is running
have it bench tested by an accredited auto electrician

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