Rough idle at cold start . Is it injector, thermostat, vapor purge canister, gasket, vacuum leak? MAF and 4 igniters were swap with another corolla that was supposedly running fine.

10

Asked by Jul 04, 2014 at 03:31 AM about the 2000 Toyota Corolla CE

Question type: Maintenance & Repair

Yes, I have check the plugs. Discover
that the fuel pump unit was missing
necessary O rings to keep the unit
taut under working pressure. So the
car seems to run fine, after changing
out duel filter and strainer.  SAVE  
one thing, well maybe two things.  
The car starts now, but at cold start  I
needed 2-3 cranks to get it to start --
I may have damaged the stsrter?  
The cold start has a rough idle or the
engine lopes it seems.  A few pump
of the gas, the engine will surge to
higher RPM and stay around or
above 1000RPM til warms up but will
drop down to 750RPM or so after 5-
10min. I drove the car around for
several miles, has good acceleration
and idles seemingly normal at 700-
750RPM, engine light came on.
Checked the code, 0171 lean bank1.  
300 random fire.  302,304 misfire.  
Let car cool. Disconnect battery.
Reconnect after few min, car Rough
idle start 400-600RPM.  Try to
maintain idle by pumping gas pedal.  
Car warmed up but rough idle
remains.  Hesitate when try to
accelerate or back up.  10-15mph
max.  Drove around block and
parked. Stop car. No codes showed
up.  Disconnect battery a few min,
reconnect.  Crank engine 2 times, car
start weakly but idle good at
750RPM.  Car Drove fine.  Code
0171, lean bank1.

2 Answers

100

How many miles sounds like your catalast is clogging in your converter on exhaust!!

2 out of 2 people think this is helpful.
10

What are the symptoms of catalytic converter clogged? Wouldn't I have the problem all the time?

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Toyota Corolla Questions

Toyota Corolla Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,350
#2 tenspeed
tenspeed
Reputation 1,800
#3 tennisshoes
tennisshoes
Reputation 1,610
View All

Related Models For Sale

Used Toyota Camry
820 Great Deals out of 90,857 listings starting at $850
Used Honda Civic
515 Great Deals out of 89,613 listings starting at $1,299
Used Honda Accord
787 Great Deals out of 88,039 listings starting at $1,150
Used Toyota RAV4
635 Great Deals out of 70,482 listings starting at $2,350
Used Nissan Altima
859 Great Deals out of 79,902 listings starting at $1,800
Used Nissan Sentra
424 Great Deals out of 56,411 listings starting at $1,400
Used Hyundai Elantra
484 Great Deals out of 52,875 listings starting at $1,995
Used Toyota Tacoma
519 Great Deals out of 39,818 listings starting at $1,995
Used Toyota Prius
171 Great Deals out of 17,190 listings starting at $1,200
Used Toyota Yaris
115 Great Deals out of 5,241 listings starting at $1,995
Used Ford Focus
530 Great Deals out of 56,887 listings starting at $800
Used Honda CR-V
807 Great Deals out of 60,032 listings starting at $900
Used Hyundai Sonata
600 Great Deals out of 52,259 listings starting at $1,495

Used Cars For Sale

2017 Toyota Corolla For Sale
43,963 listings starting at $13,609
2016 Toyota Corolla For Sale
102 Great Deals out of 6,520 listings starting at $10,500
2015 Toyota Corolla For Sale
125 Great Deals out of 5,742 listings starting at $8,937
2014 Toyota Corolla For Sale
197 Great Deals out of 6,029 listings starting at $8,753
2013 Toyota Corolla For Sale
52 Great Deals out of 1,820 listings starting at $6,800