My 03TL-S doesn't always start right up. I don't know why, it has new NGK Iridium spark plugs and runs perfectly after starting. But in the morning it doesn't always start right up. Anyone have any idea why.

It does have a remote starter that I use in the winter and the battery is new. I don't get it.

 

Have the electrical charging/starting system load tested. Check all of your battery and starter connections. Also check the grounds.

Could be that an interlock is on the edge ?

 

I've had the electrical system checked and they say it's fine.

 

How many miles?

 

180,000 miles and after starting it runs like new.

 

The engine cranks but won't start? Does it always do that after a cold start? Have you cleaned the iacv and egr valves?

 

....... Do ya know what all was checked ?

 

No I have not cleaned the iacv or egr valves. I'll check them out. Not sure what the iacv is?

 

Idle Air Control Valve. Do a search on how to remove and clean with carb cleaner. Very easy job.

 

Thanks victus1, I'll give it a try this weekend.

 

Try the simple fixes first. DIY's

~egr valve
~iacv valve
~egr port
~can of seafoam in an empty tank of gas
~1/2 can of seafoam in the crank case before oil change

Note: sounds like somethings gunked up, hopefully that's all it is.

 

Hey Nemesis, other than the plugs.....have ya done any other recent work on the car ? Did this problem just develop or has it been that way before the new plugs ?

...... While the electrical system may have checked out ok at the time of testing , an intermittent starting issue could possibly be due to a poor wiring connection. The reasoning behind this is that you state that the car " runs perfectly " after starting and running normally without signs of stalling or rough idle. How does the car start up after it's been run and is still warm ?