2005 Corolla doesn't accelerate after every cold Start?

[humza1]

Experts please help in diagnosing I have Corolla 2005 xli
Whenever I start after a while it doesn't accelerate properly until it's warm for at least 15 mins. Which is annoying what could be the possible problem?
Got scanner no code found

[Xulfiqar]

You know there is an actual engine under all those sensors and ecu commitee..

Have you tried checking for any issues like fuel leakage? Or loss of vacuum in manifold?

[humza1]

No leakage don't think any loss of vacuum mainfold because if it's any issue it would remain same around the clock.

[Xulfiqar]

Not at all

Some leaks seal up as the engine warms up. This is called “cold start run troubles” in the diagnosis chart of any manufacturer troubleshooting.

E.g. your rubber insert gasket of the intake manifold may leak when dead cold and seal up as the cylinder head warms up sealing the intake leak. Such issue is difficult to “quickly diagnose” because of its nature.

This is why such diagnosis may require overnight cooldown to start.

Cmon, you guys have a simple egg and potato corolla engine, its so simple that even a half drunk mechanic can diagnose it with basic tooling.

[humza1]

I'll check that can you recommend any guru of this in Lahore or Islamabad?

[helper_learner]

For Islamabad,

visit @dani_kk or @rajaatta

For Lahore,

Visit @syncview

[dani_kk]

Could be fuel system issue

[humza1]

Yeah I believe it would be same in that condition all time.

[rajaatta]

Possible suspect can be coolant sensor too

[salman108]

check the fuel pressure from the rail at cold start and then after 15 mins of warmup.
let the gauge stay, and turn the car off and see if the pressure drops.

and as @rajaatta is suggesting, check your temp sensor with a multi-meter.

Report back data, and we will then think what to do.

[Xulfiqar]

Yes, highly possible too.