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SportTrac Discussion
Engine & Drivetrain
Engine noise help???
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<blockquote data-quote="Tom R" data-source="post: 1030191" data-attributes="member: 58528"><p>Vic, the rattle was fixed, it was the catalytic converters disintegrating. That issue is fixed. The idle fluctuation is still a problem.</p><p></p><p></p><p></p><p>I paid the shop to clean the entire air intake path, fuel induction and components including the MAF, the Throttle Body and the IAC. After looking at it again today, the bolts for the IAC still have a build up of dirt and stuff on the heads and look like they were never even touched.</p><p></p><p></p><p></p><p>I'm going to clean the MAF again myself and take out the IAC and clean it to see if that fixes the stumbling issue. It's weird, it only occurs after the truck gets up to operating temperature and it doesn't do it if it is a cold start. One of the forums, a guy said he was tracking down the same exact issue and once the truck got warm, a rubber elbow warmed up enough to let in excess air or cause a vacuum leak.</p><p></p><p></p><p></p><p>If the cleaning doesn't do it, I guess I'll be chasing gremlins until I find it.</p></blockquote><p></p>
[QUOTE="Tom R, post: 1030191, member: 58528"] Vic, the rattle was fixed, it was the catalytic converters disintegrating. That issue is fixed. The idle fluctuation is still a problem. I paid the shop to clean the entire air intake path, fuel induction and components including the MAF, the Throttle Body and the IAC. After looking at it again today, the bolts for the IAC still have a build up of dirt and stuff on the heads and look like they were never even touched. I'm going to clean the MAF again myself and take out the IAC and clean it to see if that fixes the stumbling issue. It's weird, it only occurs after the truck gets up to operating temperature and it doesn't do it if it is a cold start. One of the forums, a guy said he was tracking down the same exact issue and once the truck got warm, a rubber elbow warmed up enough to let in excess air or cause a vacuum leak. If the cleaning doesn't do it, I guess I'll be chasing gremlins until I find it. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Engine noise help???
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