Hello,I have a 2003 buick century with 98k miles with a 3.1 liter engine, I recently purchased the…

Rene1982

Hello,I have a 2003 buick century with 98k miles with a 3.1 liter engine, I recently purchased the vehicle and after a month of driving it started cutting off and riding rough, doing some trouble shooting the wiring harness that is over the whole engine was some kind of way involved, it would die out when the wiring harness was being touched in random places and when it wasn't being touched as well and the fuse box was randomly doing a poping electrical noise. I bit the bullet and took it to the local dealer which after$354 in diagnostic fees came up woth it needing a ignition control module. They was going to charge us 694 for that we decided to do it ourselves. We changed the ignition control module and changed the coil packsthe car drove great for 3 days then it started cutting off again,we pulled the codes and it had the codes for mass air flow sensor,purge solenoid, and throttle postion sensor,we changed all those as well as the throttle body, the fuel filter,the air filter.also it was suggested to check the G111 ground wire on the trans axle bolt which we checked and it was not loose but had some bare wire showing, wire looked good just had some exposed copper so we wrapped it with electrical tape.the car runs and drives very good for about an hour and then it cuts off again. It starts back up but will stall out once it sits for a bit it will drive smooth again. We need help,there is no check engine light and no codes in system, i have been recommended it is the crankshaft sensor, but I know there is 2. Any suggestions?

Comments (3)
No. 1-3
Rene1982
Rene1982

I am still trying to find the problem with my 2003 buick century, replaced the crankshaft sensor and the car is still cutting off, its like the key is being turned off after about an hour of driving, and it starts right back up, but will stall again, I also noticed that sometimes it will cut off and lose power for a second and regain power on its own without even starting the car, I think it may be the ignition switch, however I have another question, I feel as if it has been a chain reaction type of situation, could the ignition switch be the root to all the issues or is it another issue and the ignition switch is now just the next part to get "burnt up" , 1st it was ignition control module, also replace coil packs at the same time, then we replace maf, purge solenoid, throttle body, throttle postion sensor, air filter, fuel filter, now crankshaft sensor, new battery. My husband did install an aftermarket radio, however I am not sure that is connected, what could cause part after part from going bad, the car runs and drive so smooth and lovely and then will just cut off, it could be the ignition switch, but what are the chances of us fixing that and it still cutting off? I am about to loose my cool please help

Rene1982
Rene1982

All the wiring to the computer? I have also been told that bad wires under the battery/or to the battery could cause this as well. The car is running smooth and great now except it just cuts off and will start back up but run a little rough and die right back out, I included everything as the back story to where we are at now with the car. We was going to attempt the crankshaft sensor and maybe new wires for the battery. I have another quesrion when we found the G111 wires exposed did we handle that properly?

ScottyKilmer
ScottyKilmer

Editor

could be the main computr has been damaged too, but I would rewire all the wiring with corroded bits on it first