2006 Grand Prix GT loses all electrical and the engine randomly shuts off

20

Asked by Oct 31, 2013 at 11:53 PM about the Pontiac Grand Prix

Question type: Maintenance & Repair

I have a 2006 Pontiac Grand Prix GT with 85,000 miles, 3.8 TC. For the last two months the car sometimes loses all electrical and the engine shuts off as if you removed the battery. The main ground to the motor has good continuity. This has happened at idle, low and high speeds. Recently the car had no power and I had to unlock it manually. It will start right back up, and I will not have a problem for a day or a week. The battery is good in the car and not codes are showing. The only constant that has been seen by me or my wife is that when it is having an "episode" the cruise control will not work.

7 Answers

5,650

sounds to me like your emc is going to hell. Plus check the body grounds and the positive cable connection

1 out of 1 people think this is helpful.
5,650

Try this first take the nagative cable off and make sure all connections are clean and conectected good that includes your positife conetions all so. also is the bat light or gauge showing any thing?

1 out of 1 people think this is helpful.
20

Where are all the body grounds located at? Maybe I missed one. Also, I have already removed and cleaned the positive battery terminal.

1 out of 1 people think this is helpful.
5,650

ussaly on the fire wall or the iner fender well or the frame

109,915

I agree with checking and cleaning all battery connections. Make sure they are all tight. Also make sure that the negative connections on the frame and motor are also clean and tight. Inspect all cable ends for signs of fraying.

20

Here is the follow up to the car since I THINK it is fixed. I checked over the main grounds again with a multi-meter and gave them a good pull. The lug that is attached to the chassis ground under the battery was a little corroded. I unbolted the ground and the car lost all power. I then cleaned the lug real well and sanded all the paint off on the fender wall where the lug attaches. After rebolting the ground I used some touch up paint for the bare metal. Yes, the lug was bolted on top of a painted surface. So far, so good. Thanks again for the advice.

1 out of 1 people think this is helpful.
10

sweet im gonna try that to then..my 2006 is doing same thing frustrating

Your Answer

Add photo

Related Questions

  • Car turns off randomly.. 24 answers

    I have a 2002 pontiac grand prix and it has been acting crazy. First, the RPM gauge will jump erratically, my car revving and slowing down with it. Then, it sputters, then I lose my accelerator all ...

    2002 Pontiac Grand Prix

    -

    Maintenance & Repair

  • 2006 Pontiac grand prix question 5 answers

    I have a 2006 Pontiac Grad Prix and latley as I am driving the car just shuts off. It don't give me any warning or anything and after it shuts off no check engine or lights like that are on. It will s...

    2006 Pontiac Grand Prix

    -

    Maintenance & Repair

  • 2006 Grand Prix Overheating and Low Cabin Heat? 42 answers

    I have a 2006 Grand Prix Gt 3.8 Supercharged. I was gettin glow cabin heat so I flushed out the rad and heater core added new Dexcool mixed 50/50 and the engine started overheating and still low cabin...

    2006 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • 2000 Pontiac Grand Prix randomly shuts down while driving. 5 answers

    Hello. I have a Pontiac Grand Prix and it will sometimes randomly completely shut down while driving. When this happens, I have to pull over before the power steering locks up because the car is off...

    2000 Pontiac Grand Prix GT

    -

    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,857 nationwide Grand Prix listings starting at $1,500.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,160
#2 Tom Demyan
Tom Demyan
Reputation 2,830
#3 munron
munron
Reputation 2,180
View All

Related Models For Sale

Used Chevrolet Impala
578 Great Deals out of 31,558 listings starting at $799
Used Dodge Charger
398 Great Deals out of 28,096 listings starting at $1,988
Used Pontiac Bonneville
3 Great Deals out of 537 listings starting at $1,799
Used Pontiac G8
24 Great Deals out of 373 listings starting at $6,500
Used Pontiac G6
79 Great Deals out of 4,080 listings starting at $699
Used Chevrolet Monte Carlo
20 Great Deals out of 1,404 listings starting at $1,995
Used Pontiac Grand Am
1,217 listings starting at $1,999
Used Ford Mustang
459 Great Deals out of 45,641 listings starting at $1,999
Used Pontiac GTO
7 Great Deals out of 452 listings starting at $6,000
Used Chevrolet Malibu
907 Great Deals out of 79,544 listings starting at $1,500
Used Chevrolet Camaro
219 Great Deals out of 30,798 listings starting at $1,217
Used Chrysler 300
401 Great Deals out of 19,882 listings starting at $1,000
Used Honda Accord
803 Great Deals out of 84,448 listings starting at $988
Used Dodge Challenger
169 Great Deals out of 24,123 listings starting at $8,500
Used Pontiac Firebird
10 Great Deals out of 725 listings starting at $3,875

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.