Sputtering at stop?
#1
Intermediate
Thread Starter
Sputtering at stop?
Hi there. My 01 UL has been sputtering in the morning when I come to a stop. It feels like the car is going to stall. I can press the gas and the car accelerates like normal with no issues. I have cleaned the throttle body, MAF and lots of other things to the car. Any ideas? The car runs great and I am crossing 100k miles today
#5
Pole Position
Oil control valves (solenoids). The solenoid controls the variable engine valve timing. There is a thread here about it. But you would (should) have MIL code(s) P1354 and / or P1349.
#6
Intermediate
Thread Starter
#7
My LS would randomly stall out when I came to a stop. I then would be unable to start it for a while, then it would run fine. No codes/check engine light.
It ended up being the fuel pump that was on its way out. No problems since replacement.
But I would do more diagnosis though before just throwing a fuel pump at it.
It ended up being the fuel pump that was on its way out. No problems since replacement.
But I would do more diagnosis though before just throwing a fuel pump at it.
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#8
Pole Position
If you are going to drive any extended highway miles, I'd try running a proven fuel injector cleaner through the gas just to make sure that your prior throttle body cleaning hasn't clogged the fuel injectors at low RPMs.
#9
Moderator
Also check to see if coolant temp is coming up normally in case you have have a stuck thermostat although wound not have much effect in Tx.
#10
Intermediate
Thread Starter
Agree - try a large bottle of Techron (the concentrate not the diluted cheaper version) for a couple of consecutive tanks of gas and see if it helps.
Also check to see if coolant temp is coming up normally in case you have have a stuck thermostat although wound not have much effect in Tx.
Also check to see if coolant temp is coming up normally in case you have have a stuck thermostat although wound not have much effect in Tx.
#12
Intermediate
Thread Starter
Idle is fine when cold. I let it warm up today and didn't notice it weird.
#14
Lexus Champion
- Does this "sputtering/stalling" only happen in the morning?
- When it happens, does the RPM stay low, or does it "hunt" (cycles up and down)?
- Does RPM return to normal once the engine is up to temperature?
- Have you tried leaving the A/C off in the morning to see if it makes any difference?
- Have you checked the air filter to ensure sufficient flow?
- Have you checked your PCV and hose?
#15
Intermediate
Thread Starter
Ok so I got an MIL light today and the code is p1354. I cleared to the code and am gonna keep an eye on this. The car hasnt been stuttering at all this week. Weird.