02 camry cold start issue

[JHZR2]

Hi,

02 Camry V6 in the VI, cold start ambient temp is 75F. Exhibiting morning sickness, start up cold and idle is 400-500rpm. Car stalls repeatedly, won't idle in gear, need to drop it in gear at elevated rpm to move, and keep momentum.

After car gets to temp on the gauge, the idle speed is normal and there is no threat of stalling. No CELs ever.

Any ideas? Thanks!

 

[javacontour]

Dirty IAC? Our 2002 Sienna with the same engine was doing this and some throttle body cleaner in the IAC did the trick. You might try that route first and see if you get similar results.

 

[bepperb]

IAC is the first place I would look. You're in open loop so there shouldn't be much more going on, unless there is bad fuel pressure.

 

[Turk]

Originally Posted By: javacontour
Dirty IAC? Our 2002 Sienna with the same engine was doing this and some throttle body cleaner in the IAC did the trick. You might try that route first and see if you get similar results.


+1

 

[mechtech2]

Coolant sensor is #1 to check.
You may have 2 - 1 for the gauge, and 1 for the computer that is used to adjust the mixture.

 

[The_Jeff]

+3 on IAC. Does it run perfect if you feather the gas?

If it runs like junk in open loop even with foot on gas you could have the coolant sensor issue.

I bet that car goes into closed loop within seconds though, even if it's not at its most efficient.

 

[JHZR2]

Runs and idles perfect with throttle when cold- fine power all the time. There is a YouTube showing cleaning on the 1mz-fe or whichever the v6 is, so I'll try that.

 

[Not the Autorx Frank]

Just went through this on my 2000 Avalon. Replaced IAC. And problem solved.

 

[ComfyShorts]

Originally Posted By: javacontour
Dirty IAC? Our 2002 Sienna with the same engine was doing this and some throttle body cleaner in the IAC did the trick. You might try that route first and see if you get similar results.


+4

IACV+TB cleaning.

 

[JHZR2]

Did this. Pulled the intake snout, pulled the air line that connects into the ICV (there are three, likely two are coolant lines and the other one is air). Blew up, down, prodded in with a piece of stranded steel wire. Lots of carbon chunks came out. Cleaned the TB, got lots of black and brown residue. Must have used 1/4-1/2 of the bottle...

Blew it all out with compressed air, closed it up, started perfectly first time.

Seems fixed... I hope so.

 

[mattd]

clean t/body and IAC. Should solve your issue 100%. If cleaning wont fix it, replace the IAC valve.