Engine Stalling at Idle Only
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Senior User
Joined: May 2004
Posts: 120
Likes: 0
From: Vandenberg Air Force Base
Engine Stalling at Idle Only
Hello all,
It's been 2 years since my last post, here are my sins,
My '96 Aerostar with a 4.0L is now stalling. The check engine light is on, and has been for about 3 years. When we pulled the codes last, there was something about a lean mixture.
Up until now, I would get a rough idle when cold but it wouldn't die. Now it dies even when it's warmed up. It runs just fine above idle without any misfires.
Last year I did the plugs and wires.
Do you folks think it is the idle air control valve? If so, can it be cleaned?
Could it be the EGR valve stuck open?
Thanks everyone
It's been 2 years since my last post, here are my sins,
My '96 Aerostar with a 4.0L is now stalling. The check engine light is on, and has been for about 3 years. When we pulled the codes last, there was something about a lean mixture.
Up until now, I would get a rough idle when cold but it wouldn't die. Now it dies even when it's warmed up. It runs just fine above idle without any misfires.
Last year I did the plugs and wires.
Do you folks think it is the idle air control valve? If so, can it be cleaned?
Could it be the EGR valve stuck open?
Thanks everyone
Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
You really should never ignore a check engine light, especially for a lean code. If it runs lean, it can detonate, causeing serious engine damage. These guys just hit the likely culprits right on, either a MAF problem or a leak. Not much else can cause a lean code. Unless you have an exhaust leak of some pretty serious magnitude.
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
clean and/or replace the IAC...most common idle control problem on Aero....does not produce codes
valve gums up from dirt in intake air and PCV oil and combustion gases=not enough air into engine at idle
valve gums up from dirt in intake air and PCV oil and combustion gases=not enough air into engine at idle
Post Fiend
Joined: Oct 2005
Posts: 5,242
Likes: 0
From: Kiev, Ukraine
Get OBD-II data and tell me what MAF reads and what O2 sensor reads, try to actuate IAC. Use any universal OBD-II scaning program, like ProScan for example.... As for me it is easy to understand whats going on... vacuum leak, faulty MAF.... ore IAC....
BTW... My father decided to purchaise Ranger 4.0. He ordered used from the USA, 4.0 auto, red metalic... rather expencive... 2003 is $12900 with shipping....
BTW... My father decided to purchaise Ranger 4.0. He ordered used from the USA, 4.0 auto, red metalic... rather expencive... 2003 is $12900 with shipping....
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Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
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