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#1
03-25-2010, 03:19 PM
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1989 Ford windsor idle problem
I have a 1989 Ford F350 with a 351 Windsor. I had to replace the long block with a rebuilt one. I re-used most of the original parts with the exception of the distributor and water pump. When I start it it sounds fine, a little bit of a rough idle but not bad. It then seems to surge as if it had a long duration cam. When I tap the throttle it goes away for a minute or so. Any help would be greatly appreciated !!!!!! Also no check engine light on.
Last edited by bosgencon; 03-27-2010 at 06:42 PM. 
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#2
03-25-2010, 10:20 PM
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Re: 1989 Ford windsor idle problem
Check for vac leaks & clean the IAC Ford Fuel Injection » Idle Air Bypass (IAB)
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#3
03-28-2010, 04:56 PM
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Re: 1989 Ford windsor idle problem
Thank you for your help. I replaced the IAC valve and its better but... not rite. still starts to surge after a bit. Its seams like a switch kicks in or out and changes the idle. definatly perplexed.
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#4
03-28-2010, 05:00 PM
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Re: 1989 Ford windsor idle problem
Thank you for your help. I replaced the IAC valve and its better but... not rite. Still starts to surge after a bit. Its seams like a switch kicks in or out and changes the idle. Definatly perplexed. Fast idle is great but not gonna pass NJ smog tester.
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