My car, shakes, jerks or idles bad at excatly 1500 RPM. (Doesn't matter if I am driving, idling, hot, cold, when the rpm is on 1500, car jerks.)

if it goes under, or over 1500 it runs or idles fine. Very precise car.


Since it is presice, i think it is related to a sensor or an electric device, but I have no idea.

Please help

 

Sorry, I forgot the details

I have a 93 Del sol, everything stock, w/ a edelbrock turbo kit running on 5 psi

 

sounds kinda like a tps sensor. Either that or a distributor problem. Also might be bad spark plugs or wires.

 

every find the solution to the bucking/jerking problem at 1500 rpm??

 

wow bumpen a 5year old topic back to life huh

 

Well my Del Sol has the same problem. I was googling to find answers and came across this forum. Just curious to know if anyone found a solution.

 

Check your transmission fluid. If its low the gears in the diff will sometimes slip of eachother. Happened to me and scared me shitless. Refilled trans and it went away.

 

I have experienced the same problem for the past days after my car was converted from a 95 civic lx carburator type to an efi engine. I've been a doing a lot of research regarding this problem. When I'm on my way to the shop, the car is keep on jerking between 40 km/h to 60 km/h. It runs fine below 40 km/h and above 60 km/h. And when I reach at the shop, we tried to rev it. When it reaches 1500 rpm it looks like it reaches the rev limit. Now what we did, based on what I have read above. We tried to check spark plugs and even replace distributor, distributor coil and high tension wire. Still no luck but when we tried to adjust the TPS the rev issue at 1500 rpm is gone. On my way, I still experienced jerking at 1500 rpm but only on deceleration no issue on acceleration anymore. Will try to do more adjustment on the TPS based on my friends suggestion. I will post more updates regarding the behavior of the car once we did some adjustments. So far jerking issue in my part is manageable. If anyone also has a solution on this issue, please post it here also.