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While driving at speed on the highway on a flat not accecerating or deaccelerating my car drops roughtly 500 rpms for about 2 seconds then picks back up
new batt , new belts how ever i did test alt it passed but i still get a drop in voltage then it will pick back up ? is it possible the alt is working half the time?new batt , new belts how ever i did test alt it passed but i still get a drop in voltage then it will pick back up ? is it possible the alt is working half the time?
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Engine light on? Many things can cause this. Mass airflow sensor, throttle pos. sensor, cam sensor, idle control valve, O2 sensor, vacuum leak etc, diagnosis be great. Good luck
it may require a ECM upgrade in the software
in the mean time restrict the rpms between gear changes
for example accelerate in first ti around 3000 rpms and slow down the selection and keep the rest of the changes around the 2500-3000 rpm range
naturally , the harder yo rev it the longer it will take for the rpms to drop
just as a point of interest how did you get a brand new car that is 4 years old ?
Problem with electronic throttle control maybe. Any light's lit on the instrument cluster or messages engine power reduced . Could be a sign a position sensor is going bad . The gas pedal assembly has to sensors as does the throttle body . You could try cleaning the throttle body bore . Having a qualified repair shop hook up a diagnostic scan tool to view sensor data would be a good thing . 007 Idle Speed Problems Scan Data for Idle 1 reason your cars throttle body needs cleaning Gain lost horsepower and...
Sounds like you are experiencing problems with your transmission or your tcm (trans control module) located next to your computer.Is there any mil on? That will help also.
I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.
The EGR valve sticking, loose wires, bad ground connections, dirty connections, fuel pressure dropping out, vacuum leaks, or any combination of several of these at about the same time.
new batt , new belts how ever i did test alt it passed but i still get a drop in voltage then it will pick back up ? is it possible the alt is working half the time?
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