hesitation under boost
06 November 2006, 05:03 PM
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hesitation under boost
Hi all, New to scooby net!! had MY99Uk for 2 weeks now and the last few days has started hesitating under boost, are there any common known faults or solutions to this? up until now the car has been great, never haven driven an AWD car before i cant get over how good the grip and handling is.
06 November 2006, 05:05 PM
#2
Originally Posted by finch81
Hi all, New to scooby net!! had MY99Uk for 2 weeks now and the last few days has started hesitating under boost, are there any common known faults or solutions to this? up until now the car has been great, never haven driven an AWD car before i cant get over how good the grip and handling is.
If you do a search you'll find loads on hestitating under boost, if it happens around 4500 rpm, theres loads on that
06 November 2006, 05:14 PM
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yes it is m8, from what ive read it seems the MAF is the most likely cause, just wondered if there was an easy way to tell before i rush out and buy a new sensor altho they seem to be going prety cheap on ebay at the mo!!
06 November 2006, 06:26 PM
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My MY96 STI was doing this up until sunday. Answer.....
Clean your boost solinoid and the small cylidrical thing mounted above it. Take off all of the rubber hoses (remember where they go!), connect the green plugs under the steering column and the car will start a self check mode and you will here the boost solinoid clicking. At this point fire some brake cleaner in to it. It will come out of the bottom (mine was dirty). Keep on flushing it until it runs clear. Leave for a couple of hours to dry. Put everything back and hopefully it will be OK! £2.60 for brake cleaner and it's sorted!
Hope this helps! Gotta be worth a try for £2.60!!!!
Let me know how you get on!
Nick
Clean your boost solinoid and the small cylidrical thing mounted above it. Take off all of the rubber hoses (remember where they go!), connect the green plugs under the steering column and the car will start a self check mode and you will here the boost solinoid clicking. At this point fire some brake cleaner in to it. It will come out of the bottom (mine was dirty). Keep on flushing it until it runs clear. Leave for a couple of hours to dry. Put everything back and hopefully it will be OK! £2.60 for brake cleaner and it's sorted!
Hope this helps! Gotta be worth a try for £2.60!!!!
Let me know how you get on!
Nick
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06 November 2006, 08:53 PM
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You can get overboost in cold weather which means you may be hitting fuel cut. Would tend to happen more in 4th and 5th. It could be the MAF as the MY99 cars are prone to MAF failures over time.
Try an ECU reset and see how the car drives. If the ECU has compensated for the failing MAF you may find the car is worse after the reset which could point to the MAF.
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Try an ECU reset and see how the car drives. If the ECU has compensated for the failing MAF you may find the car is worse after the reset which could point to the MAF.
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