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

120

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

3 of 3 people found this helpful.
10

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

1 of 1 people found this helpful.

Your Answer

Toyota Corolla Experts

  • #1
    Tom Demyan
    Reputation
    2,510
  • #2
    tenspeed
    Reputation
    1,850
  • #3
    tennisshoes
    Reputation
    1,810
View All

Related Models For Sale

Used Toyota Camry
1,098 Great Deals out of 76,364 listings starting at $1,400
Used Honda Civic
689 Great Deals out of 53,640 listings starting at $1,495
Used Honda Accord
917 Great Deals out of 77,850 listings starting at $1,295
Used Toyota RAV4
692 Great Deals out of 53,353 listings starting at $999
Used Nissan Altima
1,152 Great Deals out of 74,314 listings starting at $900
Used Hyundai Elantra
607 Great Deals out of 45,371 listings starting at $495
Used Nissan Sentra
665 Great Deals out of 49,913 listings starting at $1,717
Used Toyota Prius
327 Great Deals out of 15,259 listings starting at $1,200
Used Toyota Tacoma
678 Great Deals out of 41,048 listings starting at $2,500
Used Honda CR-V
748 Great Deals out of 52,550 listings starting at $1,000
Used Toyota Yaris
53 Great Deals out of 2,637 listings starting at $1,999
Used Ford Focus
667 Great Deals out of 64,428 listings starting at $999
Used Hyundai Sonata
764 Great Deals out of 52,819 listings starting at $1,745

Used Cars For Sale

2018 Toyota Corolla For Sale
35,476 listings starting at $16,679
2017 Toyota Corolla For Sale
115 Great Deals out of 4,282 listings starting at $9,600
2016 Toyota Corolla For Sale
188 Great Deals out of 6,576 listings starting at $8,500
2015 Toyota Corolla For Sale
249 Great Deals out of 5,960 listings starting at $7,991
2014 Toyota Corolla For Sale
104 Great Deals out of 2,768 listings starting at $6,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.