2001 corolla when cold it starts fine and runs fine as soon as it warms up it wants to die out like it is getting to much or to little fuel,

10

Asked by Apr 26, 2015 at 03:13 PM about the 2001 Toyota Corolla LE

Question type: Maintenance & Repair

had the codes checked and all it comes up with is random miss fire on 2 and 4. I have
replaced the plugs and all 4 coils, new air filter and cleaned the mass air flow sensor. It
has run this way for about 2 years that I have owned it. It also had a rattle coming from
under the body which I figured is either a heat shield or the cat converter. Ant ideas how ti
fix it or what is wrong?

8 Answers

10

Also above 2000rpm it runs fine. but when it drops down below that and you slightly push the fuel pedal it wants to choke out.

149,045

I would have said the things you already checked and replaced, But that being done, now I'm thinking bad injectors on 2 and 4. Or, it's not going in to closed-loop after warm up and the 02 sensors are being ignored and the ECU compensated by giving it a rich fuel trim. That is from the coolant temperature sending unit bad..not the one for the gauge but there is another coolant sensor for just that and the ECU does not 'know" the engine is warm

149,045

When yo changed spark plugs how did the old ones look?

10

just pulled them out a few days ago and they all looked like they were either burning lean or normal(not burning rich) Cleaned them up and put them back in. still the same issues. after I drive about 4 miles it is at normal operating temp, and dont want to restart easily.It dose after a few minutes of cranking and almost starting or sometimes it starts right up and as soon as I drop it in gear it dies out.

10

While driving anything under 2000 or 2200 rpm when you step on the fuel pedal it acts like it is choking out. If I drop out of OD or down shift manually it picks right back up

1 out of 1 people think this is helpful.
149,045

This is getting tough. But see my message.... Meantime watch this https://www.youtube.com/watch?v=mfauGoGXCmo

1 out of 1 people think this is helpful.
149,045

OK I found some information. Have your EPC checked. The Electronic Power Control, aka drive-by-wire system. Could have "flat spot"

10

who dose that check? can they do it at the auto parts store?

Your Answer

Add photo

Related Questions

Corolla

Looking for a Used Corolla in your area?

CarGurus has 72,038 nationwide Corolla listings starting at $1,400.

ZIP:

Search Toyota Corolla Questions

Toyota Corolla Experts

#1 FordNut
FordNut
Reputation 16,130
#2 Tom Demyan
Tom Demyan
Reputation 2,290
#3 tenspeed
tenspeed
Reputation 1,790
View All

Related Models For Sale

Used Toyota Camry
928 Great Deals out of 91,041 listings starting at $990
Used Honda Civic
614 Great Deals out of 75,906 listings starting at $1,200
Used Honda Accord
723 Great Deals out of 78,674 listings starting at $899
Used Toyota RAV4
596 Great Deals out of 60,051 listings starting at $2,450
Used Nissan Altima
955 Great Deals out of 78,046 listings starting at $670
Used Nissan Sentra
522 Great Deals out of 51,064 listings starting at $990
Used Hyundai Elantra
503 Great Deals out of 53,050 listings starting at $1,000
Used Toyota Tacoma
555 Great Deals out of 34,252 listings starting at $2,335
Used Toyota Prius
206 Great Deals out of 21,096 listings starting at $1,250
Used Honda CR-V
700 Great Deals out of 55,510 listings starting at $1,800
Used Toyota Yaris
82 Great Deals out of 12,859 listings starting at $1,745
Used Ford Focus
594 Great Deals out of 56,299 listings starting at $1,995
Used Hyundai Sonata
502 Great Deals out of 48,801 listings starting at $1,300

Used Cars For Sale

2017 Toyota Corolla LE For Sale
15,655 listings starting at $14,900
2016 Toyota Corolla LE For Sale
46 Great Deals out of 2,709 listings starting at $10,890
2015 Toyota Corolla LE For Sale
75 Great Deals out of 2,528 listings starting at $7,995
2014 Toyota Corolla LE For Sale
61 Great Deals out of 1,885 listings starting at $8,800
2013 Toyota Corolla LE For Sale
34 Great Deals out of 877 listings starting at $6,500