2001 Toyota Corolla powers down

LEPERCHRON

MEMBER
2001 TOYOTA COROLLA

Engine Performance problem
2001 Toyota Corolla 4 cyl Front Wheel Drive Automatic

my car starts to power down more after I have replaced the o2 sensor and also replaced the maf sensor with a refurbished one also went down a street going 60 let off the pedal and it felt like about max 20km when it said about 40-50 km could they both be relate thanks

4 Replies

F4I_GUY

MECHANIC
3,302 POSTS

Replacing those sensors is not going to make your vehicle decelerate any differently.

You might have rubbing/seized brakes, or a tire/alignment issue.

Have a good look at your brakes, alignment and tire pressures/tread.

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Monday, July 26th, 2010 AT 10:52 PM

LEPERCHRON

MEMBER
11 POSTS

It happens when I Acelerate it sort of loses power but if I push the pedal down it will speed up run a bit then speed up

Was this

answer

helpful?

Yes

No

Tuesday, July 27th, 2010 AT 6:08 PM

F4I_GUY

MECHANIC
3,302 POSTS

So it happens both with you accelerate and decelerate? Is your check engine light on?

If you this happened right after you installed the MAF and O2, I'd be curious as to if the MAF is faulty (since it is a rebuilt item).

Also, it may be un-related. When is the last time you've done a tune-up? You may just need a good tune-up done.

Was this

answer

helpful?

Yes

No

Wednesday, August 11th, 2010 AT 8:49 AM

LEPERCHRON

MEMBER
11 POSTS

It did it before but it set a code for the front o2 and then put on an maf sensor after so now I am thinking is it a tps, cat or a wiring problem somewhere

Was this

answer

helpful?

Yes

No

Wednesday, August 11th, 2010 AT 9:07 PM