Weak Acceleration? Rough Idle? Diagnose a Car or Truck Throttle Body!

If your vehicle is experiencing weak acceleration, or rough idle, one of the areas you can diagnose is the throttle body. Over time, the valve of the throttle body collects debris and oil as the engine sucks air through it. This buildup can cause the throttle valve to drag or stick, resulting in poor throttle response, or incorrect air volumes! In this video, Len shows you how to diagnose and clean the throttle body to get your engine performing again.

If you liked this video, check out our other diagnosis videos, and don't forget to subscribe!

⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[AAuto]

√ *Watch the Video*
√ *Do it Yourself*
√ *Save Money*

[abbasa]

Lol comes out of the truck with a drill in hand

[abdullahhamadeh]

guys, it's not always the throttle body. This video does a great job telling the problem and how to fix it. (i haven't completed the video tho) but my problem was vacuum tubes were shot. I do recommend checking from the easiest to the hardest. first, check all the tubes for cracks. Note that to change the tube even if you have a small crack! from then check the AFM (air flow meter) and throttle body. trust me if i did this from the first place i would've saved myself to much money.

[mmpiforall]

On many GMs with throttle bodies the throttle plate is spring loaded when the engine is off and a DC stepper motor is engaged when the engine is running. After cleaning, idle may be high as engine re-learns idle with a now clean throttle body.

[loveevenyourenemies]

You are an excellent teacher, this is your area, so don’t quit. Must continue teaching people like me.

[sellbuyllc]

The hard part about this great video is, it will be hard to find a honest, reliable mechanic

[boop]

thanks man! You're a great teacher! So many car fixing videos I can't understand because I don't always know the terminology.

[rakesh]

My car was gasping for air during acceleration at low RPM. It got worse when I turned the AC on. My reading was that the air and the fuel filter probably need some cleaning. I went to the garage this morning and he said that the Throttle Body was the culprit. He cleaned it up and I am as good as new :)

[israelnitta]

Great intro! I like how he had his gloves on and ready with an impact ready to go.

[RsiX_productions]

Felt my recent lexus 1999 is200 to be slower and less reponsive to my silver one ... just now looked in throttle body, black and oily like beyond expected ! Cleaned it now the car is faster smoother . Also instant revs idling went from 0.75k to 2k instantly until reset ecu . Driving great now 👌

[rakesh]

An old timer like me who grew up in the era of Carburetors, this new fangled technology was hard to fathom. You can't stop progress I guess.

[HIGHSTANDERDS]

I love 1- auto videos. They have helped me in stranded Times. With easy fix videos

[weatherman]

I used on of your older videos to get my throttle body outta my truck so I could clean it last week. Runs/idles sooo much better now. Love these videos every mornin!

[Jeff-rkhq]

Ole Glenn is a good old boy always working on them damn veericles

[moshet]

Considering the price of 1A Auto parts, I initially thought they were cheap Chinese parts. However, I ordered a timing belt kit from them and turns out it is rebranded Gates. So yeah they're not lying when they say high quality.

[AlanElias]

I love these videos. Im gonna find and clean my throttle. If i need a new one, i will order it from you guys for sure!!!

[keiththecarpenter]

I appreciate your informative and helpful video. I especially like that you remind us to be safe by wearing gloves and Safety glasses. Thank you.

[jovesawaqanivutia]

BRO THIS IS JOE FROM FIJI, I LIKE THE WAY YOU EXPLAIN ABOUT ENGINE .

[howardswanson]

Great explanation in 30 words or less ! Concise and to the point. Thanks a ton.

[speeddemon]

Appreciate all the videos you guys do.The mechanic is super cool and very informative in such short videos.. Thanks to all you guys for doing these videos.. the multiple playlist on different vehicles is awesome. 👍👍