Running rough...

[castmaster]

Guys help me out, my 4 cyl Camry was giving me troubles for a while now...

This morning, going to work it started acting weired... I can spin the engine in neutral without problems, but with a gear in, whenever I try to accelerate, pushing gas pedal just don't do anything - it's hesitating and jerks from time to time... No CEL codes...

I just went through the clutch-change, maybe there is something i've knocked of... but it has been almost 2 days since...

B.t.w. it's really cold today, -15dec C... and i'm 10 mins away from work... the car started hesitating just about when it got really warm...

And the possible causes i found through the search:

1. Restricted air filter
2. Faulty MFI/SFI systems
• Faulty pressure regulator
• Clogged fuel return line
• Defective engine coolant temp. sensor
• Defective intake air temp. sensor
• Faulty ECM
• Faulty injector
• Faulty throttle position sensor
• MAP sensor

I feel like it's about time to trade her in...

[castmaster]

During the lunch I went to check it out and I couldn't replicate the problem... Got the car warmed up... accelerated really hard - no hesitation what so ever... WTF? I have an 800 miles trip this weekend and i really have no trust in my Camry...

[BigPete]

If the engine is revving up with no problem, but it isn't transfering the power to the wheels, then it sounds like there may be a problem with your clutch job.

I don't know if this would happen on a camry, but I used to have a ford and when the timing belt snapped, the engine acted normal, but the car wouldn't move.

I've also heard that there is a slight break in period for new clutches, like 500 miles. I'm still unsure as to when you are having a problem, but if your trip is only a few days away, you may want to consider a rental or getting a mechanic's advice if you don't feel like breaking in the clutch on the trip.

[toyotaholic]

before you leave for work again, try letting the car run for 5 min.

[dpanda88]

i believe it could be your sensor. I had the same problem you have right now. I brought it into the shop and they fixed the sensor.. now it runs fine with no problem.

[castmaster]

Well, to clarify things, i was able to rev it up in neutral and with the clutch desingaged but whenever i've tried to move the car with it wouldn't reve at all or jerk... Felt a bit like clogged injectors... However, I was unable to replicate the problem so far. I've spent a few hours on the car after the work, changed the fuel filter, discovered that i've fuc#ed up a drive-shaft seal, checked the fuel pump, checked most obvious sensors... Found nothing, nor I had the hesitation problem on my way home...

[dpanda88]

well have you checked the senor which operates how much accerleration your giving to your car? so it will open the valve to let the air into the engine