My 1988 toyota corolla is jerking at low speeds in low gears. It's like it has almost no power when you try and accelerate from a standstill to around 80km/h If you press the accelerator down when in a low gear without slipping the clutch a bit, the car jerks like crazy and the revs jump up and down. Cold or warm, it doesn't make any difference. Once you get some speed up, it seems fine. It sounds like there's quite a big hole in my exhaust though and I wonder if that's the problem.
Manual transmission, carburetor and distributor fuel system. Distributor cap was recently changed. Sparks and oil changed less than a month ago. Fuel filter is ok I doubt it's the clutch as it was serviced about 8 months ago and transitioning from gear to gear is smooth. I don't want to sound like an *ss here but please only answers from guys with experience in this situation or guys who really know about cars and no guesses. Please guys, any ideas??
Do I just need a good service and engine tune up or am I looking at something more intense?
Remove transmission and check the clutch slave cylinder for leakage. Check fluid level and bleed if necessary. Remove clutch, pocket bearing, throwout bearing and pressure plate. Check for leakage from rear engine seal and front transmission seal. Remove and replace seal(s) if traces of oil are present. Check clutch for oil film and excessive wear, damaged or worn pressure plate (if close to tollerence, replace for convenience). Replace clutch components as necessary and reassemble using your manual for guidance. This should take care of the problem. I see you have changed your fuel filter and given a basic tune up so you should be good to go at that point (check compression and distributor timing) If timing belt has not been replaced around 60,000 then replace or you may end up on the side of the road. if any further questions let me know.
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Your car probably has the same problem as the 1995 corolla that I had before.
I don't know if jerking is same as vibrating but I brought my car to the shop and the mechanic said that it was caused by the wiggling of the harmonic balancer. He changed it but the problem wasn't solve. It wasn't diagnosed correctly so I asked for a second opinion and a friend of mine who is a mechanic found out what was wrong with the car. The bearings of the left front drive axle were completely worned that's why it don't spin evenly that causes the jerking or vibration when you accelerate
He replaced it and the problem was gone.
This may be normal but you can adjust your driving to reduce the impact. To speed up the warm up process of the catalytic converters, the power train computer holds first gear a little longer than normal. This causes your car to get higher in the rpm range than normal, at part throttle, which causes the hard shift. On your first drive, try NOT to accelerate while the car is in first gear--it won't take long for you to learn how far this is.
the idle RPM is too high or its just too cold, how cold is it outdoors? idle speeds cold can be about 1500 RPM/ cold. and will ****. it jerks because you are taking 0 torque from engine and the sending that to a stalled rear axle. this cause a ****, that is why the park lock out requires Brakes on so yo dont run over things.
ENGINE HESITATES WHILE ACCELERATION LOSS OF ACCELERATION It can be fuel pressure issue or it's the problem with accelerator pedal or its clogged filters causing there. There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: ------- Jerks and Hesitates During Acceleration? http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html ----------- Loss of acceleration? http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html --------- Headlights flickering and car hesitates to start? http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html -------- How exactly the Vehicles Accelerator Cable works? http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html ------------- How exactly Vehicles Accelerator Pump Diaphragm Works? http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html -------- 2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration? http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html --------- 2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End? http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html --------- Wheel hop under hard acceleration? http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html -------- 2009 Chevy impala accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html --------- Nissan Pathfinder stalls and bucks on Acceleration? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html -------- Acceleration lag problem? http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html ------------- These details will help. Thanks.
Is it automatic? Maybe the car is starting off in 2nd gear?
Try shifting it manually, starting in Low, and then progressively shifting to 2nd, and then to Drive. If it now accelerates normally, there could be a shift solenoid problem in the transmission. Verify that your transmission fluid level is correct. If it is, and the problem persists, have it professionally diagnosed. Not much that a DIYer can do with an automatic, unfortunately.