When should I have the Throttle Body cleaned? Interval how how many kilometers or number of months?

**12vdc** · November 30th, 2019 07:44 PM

Originally Posted by attyallanlatras

I have not read a thread on cleaning the throttle body here. So can anyone help me on my queries as to: When should I have the Throttle Body cleaned? What about interval how how many kilometers or number of months between the cleaning?

If your car is Diesel then there's no such as throttle body. On diesels, SCV & EGR are the parts to be cleaned that are mostly affected by fuel/combustion dirt problems. There is a similarly-looking throttle butterfly near the intake manifold but it controls the engine avoiding shudder during shut-off.

**wezz_zzew** · May 29th, 2020 10:27 AM

Nilinis ko throttle body ng kotse ko as in binaklas ko buo yung assembly, now, ayaw na mag start.
Chineck ko kung meron ba ako hindi naikabit na sensors or hose kumpleto naman. May redondo pero ayaw dumerecho sa start. Meron na ba naka experience sa inyo ng ganito? Ano po kaya problema? TIA

**oj88** · May 29th, 2020 10:54 AM

Originally Posted by 12vdc

If your car is Diesel then there's no such as throttle body. On diesels, SCV & EGR are the parts to be cleaned that are mostly affected by fuel/combustion dirt problems. There is a similarly-looking throttle butterfly near the intake manifold but it controls the engine avoiding shudder during shut-off.

The anti-shudder valve also closes in conjunction with the EGR valve opening to have better control of the ratio between air and EG for the intake.

This is the reason why doing an EGR delete can lead to more pumping losses and/or lower idle RPM. On the other hand, it will generally keep the intake relatively free from direct exposure to soot.

But back on topic, the "TB" on Diesels do accumulate a bit of blow-back oil residue. In time, it will attract fine particles that becomes gunk. A tiny amount won't hurt but if it becomes bad enough, it can impede the function of the "TB" butterfly valve or combine with the EG soot further downstream and accumulate on the intake manifold and intake valves.

**yapoy86** · May 29th, 2020 11:49 AM

Originally Posted by wezz_zzew

Nilinis ko throttle body ng kotse ko as in binaklas ko buo yung assembly, now, ayaw na mag start.
Chineck ko kung meron ba ako hindi naikabit na sensors or hose kumpleto naman. May redondo pero ayaw dumerecho sa start. Meron na ba naka experience sa inyo ng ganito? Ano po kaya problema? TIA

anong kotse ba yan? baka nalimutan mo yung MAF Sensor ikabit.. make sure na naka install na lahat ng air intake hose kasi pag walang ma detect na airflow yung MAF hindi talaga aandar yan

**liteblue** · May 30th, 2020 01:58 PM

Originally Posted by yapoy86

anong kotse ba yan? baka nalimutan mo yung MAF Sensor ikabit.. make sure na naka install na lahat ng air intake hose kasi pag walang ma detect na airflow yung MAF hindi talaga aandar yan

I just did my first throttle body clean and MAF Sensor clean using CRC MAF Cleaner. First the car wont start rumeredondo lang. Then I step on the petrol till umistart na sya.
Nag shake munna sya then idle a little bit rough and high then nagadjust sya. I stop the car when it's hot enough then removed the battery. 15 mins after I reconnect the battery and start the car then put my handbrake on and put the car to drive and step on my brake. i watch the idle settle to relearn idle for 5 mins. I stop the engine and restart the car and drive around to check the idle at stoplight with the engine on normal running temp. The shake disappear during stoplight while on stop at traffic light. I think my problem with my auto toyota corolla which vibrates a little at traffic light gone so far. As for interval not sure how often.

**Walter** · June 8th, 2020 06:47 PM

Idle relearning takes longer than 5 minutes ... and it should be when the engine reaches nominal temperature ...

**yapoy86** · June 8th, 2020 07:56 PM

Yung MAF sensor di dapat nilinis yan.. kasi installed yan right after ng air filter.. ang nag papadumi ng throttle body ay yung PCV talaga.. kasi from the valve cover --> pcv -> hose -> throttle body na.. dyan galing yung oil kaya madumi throttle body

**Flipo** · June 8th, 2020 09:06 PM

Originally Posted by yapoy86

Yung MAF sensor di dapat nilinis yan.. kasi installed yan right after ng air filter.. ang nag papadumi ng throttle body ay yung PCV talaga.. kasi from the valve cover --> pcv -> hose -> throttle body na.. dyan galing yung oil kaya madumi throttle body

So ano ang gagawin sa PCV, para di magdumi yung throttle body?

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**yapoy86** · June 8th, 2020 09:19 PM

Originally Posted by Flipo

So ano ang gagawin sa PCV, para di magdumi yung throttle body?

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Dyan ka mag install ng oil catch can.. to trap oil mist coming from the crank case

**Walter** · June 9th, 2020 01:18 PM

Originally Posted by yapoy86

Yung MAF sensor di dapat nilinis yan.. kasi installed yan right after ng air filter.. ang nag papadumi ng throttle body ay yung PCV talaga.. kasi from the valve cover --> pcv -> hose -> throttle body na.. dyan galing yung oil kaya madumi throttle body

THIS IS NOT TRUE ... The MAF sensor needs to be cleaned occasionally using contact cleaner ...