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 FordNut
FordNut
Reputation 15,460
#2 Tom Demyan
Tom Demyan
Reputation 2,110
#3 tenspeed
tenspeed
Reputation 1,780
View All

Related Models For Sale

Used Toyota Camry
1,527 Great Deals out of 101,100 listings starting at $700
Used Honda Civic
1,179 Great Deals out of 66,806 listings starting at $695
Used Honda Accord
1,258 Great Deals out of 78,203 listings starting at $969
Used Toyota RAV4
1,150 Great Deals out of 55,710 listings starting at $1,999
Used Nissan Altima
1,337 Great Deals out of 84,997 listings starting at $1,795
Used Nissan Sentra
773 Great Deals out of 52,990 listings starting at $2,000
Used Hyundai Elantra
942 Great Deals out of 52,930 listings starting at $895
Used Toyota Tacoma
798 Great Deals out of 33,979 listings starting at $2,499
Used Honda CR-V
1,315 Great Deals out of 73,650 listings starting at $1,118
Used Toyota Yaris
104 Great Deals out of 10,409 listings starting at $1,745
Used Toyota Prius
524 Great Deals out of 24,213 listings starting at $1,250
Used Ford Focus
1,256 Great Deals out of 60,027 listings starting at $1,295
Used Hyundai Sonata
968 Great Deals out of 49,788 listings starting at $700
Used Toyota 4Runner
406 Great Deals out of 20,535 listings starting at $2,499

Used Cars For Sale

2017 Toyota Corolla For Sale
34,976 listings starting at $15,596
2016 Toyota Corolla For Sale
125 Great Deals out of 8,117 listings starting at $10,977
2015 Toyota Corolla For Sale
373 Great Deals out of 7,042 listings starting at $9,500
2014 Toyota Corolla For Sale
290 Great Deals out of 5,704 listings starting at $7,962
2013 Toyota Corolla For Sale
212 Great Deals out of 3,098 listings starting at $6,490