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Old 19th April 2019, 19:49   #1
zedhed
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Default IAC valve 1.8t

Anyone had there iac valve stuck in the open position.struggling to find this hesitation fault still.if it is stuck open wouldn’t it throw the engine light on.


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Old 19th April 2019, 20:06   #2
Sheraton
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what Hesitation Issue are you Having ?


"Hesitation" on a 1.8t - depending when it happens i.e RPM/throttle position - if it's immediate upon opening the throttle - i'd suggest Spark Plug Gap.... or even Fuel Filter Separation Issues - If it's happening after being open throttle for a bit - both of these still need considering - but also the Electronic Boost Control Solenoid (Pierburg) and Vac hose Connections to from this.



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Old 19th April 2019, 22:00   #3
zedhed
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Quote:
Originally Posted by Sheraton View Post
what Hesitation Issue are you Having ?





"Hesitation" on a 1.8t - depending when it happens i.e RPM/throttle position - if it's immediate upon opening the throttle - i'd suggest Spark Plug Gap.... or even Fuel Filter Separation Issues - If it's happening after being open throttle for a bit - both of these still need considering - but also the Electronic Boost Control Solenoid (Pierburg) and Vac hose Connections to from this.







Paul.


It’s happening straightaway but clears when spoils up.also worse when hot.spark gap is 0.5 and foc is fitted👍


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