Why is my Toyota Corolla running so slow?
Another issue with Toyota’s was carbon build up on the intake valves. A top engine cleaner done by a shop can be done to see if it helps. In a lot of cases, removal of the head and a valve job was the answer as carbon absorbs fuel cold and after it warms up, it will run okay.
Why does my car hesitate when I start up?
Rough idle on initial start up in the morning, then clears up, then hesitates slightly on acceleration from a complete stop after that. I have changed coil packs, spark plugs, MAF and O2 (upstream) sensors, and added a fuel injector cleaner. Still have idle and hesitation problems.
What kind of hesitation does a car have?
Experiencing severe hesitation when starting up from a stop and when accelerating while at lower speed. When engine is cold hesitation is minimal but as soon as engine reaches normal operating temperature. Hesitation is always so bad that I have to be careful pulling into traffic to avoid getting rear-ended.
What causes engine to hesitate at low rpm?
If any of the vacuum hoses around your engine become damaged or worn out, you could experience air leakage from them. Then you will experience engine hesitation which is most noticeable at low RPM. Repair or replace any hoses which are causing the leak.
How to know if your Toyota Corolla engine is leaking oil?
Smell exhaust and check plugs for signs of excess oil. 6 Run the engine parked under several rev levels to see if there is oil loss from any sporadic leak. 7 Valve knock is either or both advanced spark timing and heat. Heat can be excessive to one or several valves depending on Head gasket design flaws.
How often do you change the oil in a Toyota Corolla?
There is no oil leakage as such but i have to put 1L every 1500-1800 Kms. Went to a mechanic, he told the oil seal (packing) around oil pan needs to be changed. I dont see any heavy leakage around oil pan.
What causes idle surges on a car ECM?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges.
Why does my car stall at low rpm?
The will likely force your computer to stall the engine and only allow it to run at low RPMs, which means the car will only move at slow speeds. This is a safety feature enforced by the computer so that your engine doesn’t get too damaged.