85 idle starting prblem please help
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85 idle starting prblem please help
hi i got this 85 van for free for my 19th b-day and this is my problem.
when i start it it turns over but it sounds like its starving for gas and when i take my foot off the gas the engine shakes and dies.i will replaced the fuel filter but nothing so i read some forums and it seems people with early90's models have same problem witch is the IAC but im still unshure i need help because i done have gear in my head if u know what i mean
when i start it it turns over but it sounds like its starving for gas and when i take my foot off the gas the engine shakes and dies.i will replaced the fuel filter but nothing so i read some forums and it seems people with early90's models have same problem witch is the IAC but im still unshure i need help because i done have gear in my head if u know what i mean
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From: North Jersey, New Jersey
Replace your IAC (Idle Air Control) its job is to meter the air when the throttle plate is closed or in other words when the gas pedal is not depressed. Such as at idle or a stoplight. If it isn't functioning properly the engine gets starved for air and dies.
It is a silver colored can with a 2 wire connector going into it. It is secured to the top of the intake by 2 screws.
To remove it disconnect the 2 wire connector remove the 2 screws and pull it off the intake.
It is a silver colored can with a 2 wire connector going into it. It is secured to the top of the intake by 2 screws.
To remove it disconnect the 2 wire connector remove the 2 screws and pull it off the intake.
Last edited by krankshaft; Sep 14, 2005 at 09:56 AM.
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my friend that use to work at ford and he showed me were it wus and we took it off i dont know what he was looking for but it seemed he thought it wus fine. does any one know how to check to see if it needs cleaning or replacment. thank u for a quick response everyone
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From: Salt Lake City, Utah
Like, under 100 for OEM quality stuff. And if you don't you feul economy is penalized, and at todays prices, it doesn't take long to make up the difference.
Autozone's price is $55. Others should be similar. OEM grade is better than the Aftermarkets, so you will likely pay more for a good one, but thats cheap to keep your vehicle running right, regardless of how new it is, or what make it is.
Autozone's price is $55. Others should be similar. OEM grade is better than the Aftermarkets, so you will likely pay more for a good one, but thats cheap to keep your vehicle running right, regardless of how new it is, or what make it is.
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From: Mitchell, SD
Welcome! 
Go ahead and replace the IAC with a new motorcraft one. While you are there, pick up a set of wires, plugs, and O2 sensor. Probably needs them. So you are looking at a $300 van more or less that will run for a long time.
BTW what is the millage on it?
Go ahead and replace the IAC with a new motorcraft one. While you are there, pick up a set of wires, plugs, and O2 sensor. Probably needs them. So you are looking at a $300 van more or less that will run for a long time.
BTW what is the millage on it?
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Lead Driver
Joined: Oct 2004
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From: Central Oregon
Have you checked the fuel pressure, the fuel pump may getting weak. My SHO started to be hard to start and that was what it was. Just somrthing else to look at if the IAC is not the problem.
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it only has about 120,000. i got{stole} a use iac from a newer model and put it on it was a little better but it still did the same thing i'm just going to replace it and when i do ill post something p.s. nothing was wrong with the pressure but it did seem like it was starving for something . me thinks air
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From: Houston,TX
check the air filter...have you thought about maybe a full tune-up? the plugs can be a bother to get to and are frequently left in till death. what do your wires look like? any cracking on the insulation, oil , or grease? if the IAC isn't the problem I'd look at these things next...or first if you haven't replaced the IAC yet. also...if you look inside the IAC...the two holes on the bottom...it should appear fairly clean, if not, try spraying with a throttle body cleaner and see if that helps. if not then go ahead and replace it
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From: Salt Lake City, Utah
Yeah, and don't look at tune up as wasted money, much newer vehicle require tune ups too, and it costs money no matter how you look at it. Many people look at a newer vehicle as an alternative to dumping money into a vehicle. I look at it as a 20,000 dollar tune up.