please this problem is killing me! when i first start my car up and i drive for like the first 5 minutes of driving my car feels amazing, full of power, idles smooth and correct, transmission shifts relativly smoothly and precisly. after about 5 minutes the transmission starts to shift quite abit harder and makes abit of a jolt each time it shifts. at a traffic light, the car idles alittle bit rough, it will not stall but it hovers around 500 rpm. after this has happened, at random but often occassions throughout the rest of the drive i will push down on the accelerator and the engine will hesitate. and by hesitate i mean that my foot will be completely compressing the peddle with very minimal pickup. if i take my foot off the pedal when this happens and wait for maybe 2 seconds and then put my foot on the accelerator pedal again the engine will not hesitate and i will have normal pickup. sometimes when i floor the pedal in these situations where the car is massivly hesitating, if i slowly release the accelerator pedal maybe 40% the car will begin to accelerate stronger. im not quite sure what to do here. my previous car was a bmw e30 euro spec convertible and ive never faced fuel problems like thisbefore. i love my 300ce but im really worried. im a university student and thus i dont have that much money to throw at this car. i promise i wont be one of those guys that posts a problem on here and doesnt get back to you guys as to which solutions work. like i said tho, it seems strange how it runs so perfectly for the first 5 minuets that it drives. it has never stalled out on me or left me stranded tho.
Welcome to the forum.. Please tell us more about the coupe, miles, miles since last tune up and so on. This will help us establish a base line to go from. What is your fuel mileage? Do you see excessive "black" smoke from the tail pipe?
It could be the coolant temp sensor. This sensor sends signal to the fuel and the ignition computers and if it does not work, the car is switched to a limp mode. On my 87, 260E, this is the last sensor on the engine, towards the windshield. If you measure the resistance across the sensor, it should be between 2.5K and 3.5K when engine is cold and between 250 and 350 ohms when the engine is warm at 80 deg C. On my car, this sensor is a 2 pin sensor, but some cars have a 4 pin sensor. The resistance then would be measured across terminals that are diagonally opposite to each other.
1988 300ce help please! 
Linear Mode
