Slow acceleration and jerking when put in drive or reverse

If your 2001 Hyundai Accent starts well but begins to jerk and sometimes stalls when you accelerate after slowing down for speed bumps or other reasons, it might indicate a few potential issues that need to be addressed. Here are several steps you can take to diagnose and potentially fix the problem:

1. Check the Fuel System: Dirty or clogged fuel injectors can cause poor acceleration and engine performance. A clogged fuel filter can also lead to insufficient fuel supply to the engine, causing it to stall or jerk.
2. Inspect the Ignition System: Since you've mentioned changing the plugs and distributor, ensure they are correctly installed and functioning. Faulty spark plugs, a bad distributor cap, rotor, or ignition wires can lead to misfires during acceleration.
3. Air Intake System: A dirty or clogged air filter can restrict airflow to the engine, affecting its performance. Also, check for any leaks or cracks in the air intake hoses. A vacuum leak can cause the engine to run poorly, especially at idle or when accelerating.
4. Exhaust System: A clogged catalytic converter can cause engine performance issues, including stalling and jerking, because it restricts the exhaust flow out of the engine.
5. Check Engine Codes: If your vehicle's check engine light is on, use an OBD-II scanner to read any diagnostic trouble codes (DTCs) stored in the vehicle's computer. These codes can give you specific clues about what's causing the problem.
6. Fuel Pressure: A weak fuel pump or problems with the fuel pressure regulator can result in insufficient fuel pressure, leading to engine stalling or jerking under load. Checking the fuel pressure with a fuel pressure gauge can help diagnose this issue.
7. Transmission Issues: If your Accent is an automatic, transmission problems can sometimes mimic engine issues. Make sure the transmission fluid is at the correct level and condition. Old or burnt fluid needs to be replaced.
8. Idle Air Control Valve (IACV): If the engine stalls at idle or when decelerating, the IACV might be dirty or faulty. This valve controls the engine's idle speed.

Given the variety of potential causes, it might be beneficial to start with the simplest and most affordable solutions first, such as checking and replacing air and fuel filters if necessary, before moving on to more complex issues. If the problem persists after you've gone through these steps, or if you're not comfortable performing them yourself, it may be best to seek the assistance of a professional mechanic who can diagnose and repair the issue.

if fluid was to thick --probably wrong fluid was in their - possible motor oil - have trans flushed and filter change and replace fluid

It sounds like you have a transmission failing.

the M/t box has 4th
no a/t here as 4th period
so must be manual transmission
real photo blow is A/t BOX.
START A POST MY CAR IS STICK SHIFT
AND WIN.

Plugs ,wires,coils.

What kind of automatic transmission have you used?
You need the Dexron IV or higher grade.
See your automatic transmissions specifications in the owner's manual.

Hope it helps.

shift solenoid for second to third is bad about 45 bucks and some mess located under the tranny pan

Bring the vehicle to a transmission repair shop and they will scan it for codes and do the repairs the codes dictate.

Based on your write up sounds like torque converter slowing down in building pressure to shift.Pretty soon you will start to slip during shifts.

Hi , I have a 2002 Hundai Accent and I am have problems with the transmission can you help? Ok so to start out from a start it shift high RPM from 1st to 2nd and to top it off it doesn't go into reverse at all . I was playing around and found a buzzing noise then just the IGN is on and I put it into drive and doesn't go away till I put it back in park what do you think it is ?

hi idle choke or not warmed up enough