F150online Forums - Base fuel pressure for 98 4.6L F150

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Makina

04-05-2007 02:15 PM

Base fuel pressure for 98 4.6L F150

What's the stock fuel pressure for a 98 4.6L?

I'm having idling problems and checked the fuel pressure. The gauge reported 30-35psi, is this normal?

JMC	04-06-2007 05:29 AM

That sounds about right. Clean the IAC and try again. ;)

JMC

torkum

04-06-2007 08:58 AM

Your pressure reading at idle is normal. Be careful with the IAC when cleaning it. Ford does not recommend cleaning them, but replacing them. I have had luck cleaning them and some I have made worse.

malexander52

04-06-2007 12:08 PM

IAC?
what is this?
I am having a stupid moment

JMC	04-06-2007 04:03 PM

The IAC is the Idle Air Control valve. It allows air to bypass the throttle plate when it is closed at idle. The PCM controls this valve.

JMC

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