Hi. I recently had my throttle body cleaned and after it was installed, my RPM jumped to an idle of 1000 and 1,100 when the A/C is on. My iding before the cleanng was just around 600 and 700 when the a/c is on and it ran smooth. I knew it would jump up and I knew mechanics are supposed to bring it down. The mechanic who cleaned my throttle cannot seem to figure out a way to lower the rpm - I think I got duped by this idi0t . My fuel consumption is now so high and i dont want to bring it back to the same guy. I thought all this time that any mechanic can clean throttles - can this be done by the casa? Would you know how much? Or can you just point me to the right direction of where to get a good reasonably priced mechanic in the Paranaque / Makati areas who are familiar with theses things - (baka a racing mechanic might be good)? Contact details would be very much appreciated. Hope to hear from you thanks.
Kung EFI ang engine, malaki possibility na me singaw po yung reassembly, the fuel delivery will increase to much the unmetered air coming from the leaky portion of the throttle body, resulty is increased idling speed.
Things to check:
1. all hoses to TB.
2. Fuel lines to and out from the fuel rail be sure na proper size yung mga O-rings at pang fuel injection talaga, sa kotse ko medyo brown ang kulay
(siliconized/with Teflon if I remember it right)
3. The injectors must be placed tight with no leak to the intake manifold.
4. IAC valve (baka stucked-up)
5. Leaky assembly ng TB sa intake manifold, or intake manifold to engine, kung tinanggal din..
With that increase in RPM medyo maliit at mahirap hanapin ang leak, if that is my car I will disassembly-reassembly starting with the Fuel injectors/rail if all the hoses or TB holes are proper placed or sealed.
Kung hindi parang palyado yung takbo ng makina, baka dun na talaga banda sa intake manifold (like fuel lines) kasi pag dyan pa mismo saTB magkakaroon ng erratic signal sa MAP/MAF sensor at parang palyado ang takbo.
After MAP/MAF yung lambda sensor yung mag-aadjust ng A/F ratio.
Di po ako mekaniko pero na-experience ko na po yan. Yung sa akin dun sa fuel line to fuel rail may leak mali yung O-ring nawala ng mekaniko yung orig na o-ring, pero mas malaki yung leak dun sa isa sa mga fuel injectors. Yung idle ko lampas 2000 RPM.
Kung EFI ang engine, malaki possibility na me singaw po yung reassembly, the fuel delivery will increase to much (TO MATCH) the unmetered air coming from the leaky portion of the throttle body (or intake manifold), result is increased idling speed.