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Message: <blockquote data-quote="Izso" data-source="post: 1064134757" data-attributes="member: 2429">You've already done a full engine overhaul, forget about the carbon remover.I think I might have the service manual somewhere at home, let me go back and have a look. Since yours has the adjustment screw, it's a MMC throttle body. I'm hoping whoever sold you the throttle body identified whether your car is a MMC or a VDO Satria before installing the TB for you.I'm not quite sure what you mean by "jerk as though it's insufficient in spark", based on my understanding it sounds like the idling RPM is so low the car feels like it wants to die off. If so, and your TB is the correct one, then it might just be a simple matter of adjusting the screw to achieve the right idling speed. Btw, you can check if you have the right TB at http://www.protonparts.com.my. Just give them a call and ask for the parts number. It's very possible that the TB you've been given is a lemon too or the TPS (throttle position sensor) is incorrectly positioned or damaged. Or it could just be the idling screw that needs fiddling with. Worst case scenario is the TB sold to you is a 'compatible' brand and not original Proton so the way it was made is inferior and is causing these problems. I hate to say it but original Proton parts are actually quite good. Just that they are expensive.Too many possibilities without seeing the actual car. Oh and if you have a VAFC and have a knack for DIY, try this to see if you can adjust the TPS :<a href="http://tacra.blogspot.com/2011/10/tps-voltage-with-safc2.html" target="_blank">tacra's diy garage: TPS Voltage With SAFC2</a>---------- Post added at 03:29 PM ---------- 6 hour anti-bump limit - Previous post was at 03:27 PM ----------Btw, one more thing you can try, find a friend with a normal working Satira 1.3 or 1.5 (MMC), then just temporarily swap the TB around. If it works on your car then you know what the problem is. If it doesn't, then it's not a TB issue and more investigation needs to be done</blockquote>

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