Q: Car not accelerating after I put iridium spark plugs and cleaned my throttle body.

asked by on April 20, 2017

I drive a 2002 toyota corolla S andI replaced my copper spark plugs with iridium spark plugs, and then cleaned my throttle body with carp and throttle body cleaner. My car ran as normal last night; it accelerated like normal, and drove like normal. But this morning, I turn my car on and my check engine light comes on and it accelerates reaaaaaaly slowly. Just what an earth happened?

My car has 129000 miles.
My car has an automatic transmission.

When you cleaner the throttle body you most likely sprayed the cleaning fluid directly into the throttle body to clean it out instead of spraying a rag and wiping it out. The cleaner got into the throttle position sensor and overnight the fluid shorted the windings of the internal wires of the throttle position sensor. You will need to have the computer tested to see if you have TPS codes and sensor is not responding to throttle opening. Replace the TPS or throttle body as required.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Acceleration high-pitched whistling

This generation of Toyota Previas has a known issue with this that is typically related to something called a "flex pipe" which is a part of the exhaust system that sits in front of the catalytic converter. The fact that...

2010 Rav4 Left turn signal comes on intermittently when switch is off. Will blink left and right if I turn right turn signal on.

This problem does sound like the turn signal switch is shorting and should be replaced first to see if it is cause of short.

My third break light comes on when I apply the brake pedal, but my two main brake lights dont

Hello. Thank you for writing in. The working brake light is known as the center high mount stop lamp. It is wired differently from the normal brake lights in order to prevent them from all going out at once. The...

Related articles

How to Start a Prius
The The Toyota Prius was a game changer when it was first introduced back in 2000. As one of the first commercially successful hybrid vehicles, it eventually helped launch an entire hybrid industry. The hybrid engine was not the only...
The Top 5 Selling Cars in California in 2012
California California natives are notably environmentally conscious, and this often shows in their choices of vehicles as well. While trucks rarely make it to the top spots, hybrid vehicles are frequently on the list. Though previous years have seen the...
2012 Toyota Tundra vs. 2012 Chevrolet Silverado: Which One Should I Buy?
Large work trucks are meant for one thing: work! These vehicles are rough and ready, and can handle nearly anything you throw at them, with the exception of a car pool. While they offer two or four door options, you...