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My check engine light came on and it said it is has a

Customer Question
My check engine light...

My check engine light came on and it said it is has a throttle position sensor malfunction and an o2 sensor problem. Do you think the throttle body may just need cleaned?

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with a Chevy. The Chevy Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.

The car drives fine, but it seems to have slight difficulties between gears. It isn't stalling out anymore(I recently fixed an exhaust leak), but it idles pretty low sometimes.

Mechanic's Assistant: Leaks can get messy. The Chevy Mechanic will know what to do. Are you hoping to fix this yourself?

Certainly

Mechanic's Assistant: Great! What have you tried so far?

I haven't tried anything yet. I know my car is about due for an oil change, and I was thinking of trying to clean the throttle body.

Mechanic's Assistant: Is there anything else important you think the Chevy Mechanic should know about your Chevy?

Thats it

Submitted: 2 years ago.Category: Chevy
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Answered in 7 minutes by:
2/23/2016
Chevy Mechanic: Randall C, ASE Master Tech replied 2 years ago
Randall C
Randall C, ASE Master Tech
Category: Chevy
Satisfied Customers: 13,285
Experience: ASE Master, L1, 32 years, Diagnostic / Electrical Specialist
Verified

Hello, ya know? both the codes set can cause exact issues you are having, Cant be 100% as I am not there but tps code, o2 code, symptoms and so on? sure 110% you want to do a TB service.This you can do but follow this, get can of carb cleaner. Remove the inatke air hose from the throttle body, Gently spray in cleaner around TB bore and butterfly, Not too much, black gum will run out, this is GOOD, then slip hose back on, start and rev and blow out, Repeat this exact same cleaning say 4-5 more times till the bore is nice and shiny clean. This should be done once per 6 mos or at most once per year, This may fix all, The o2 code reading not valid info as well as the TPS code. Sure, TPS could be at fault, cant rule that out but way before jumping to TPS? I would surely dot he cleaning procedure

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Randall C
Randall C
Randall C, ASE Master Tech
Category: Chevy
Satisfied Customers: 13,285
13,285 Satisfied Customers
Experience: ASE Master, L1, 32 years, Diagnostic / Electrical Specialist

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