Last post on Aug 15, 2013 at 10:42 AM
You are in the Pontiac Sunfire
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Pontiac Sunfire, Coupe, Convertible
#243 of 306 Re: 2000 sunfire troubles [egionet]
Feb 22, 2010 (7:32 am)
Seriously, I would go with the ECM/PCM theory first. Don't be afraid of this, because dealers will make you think it will cost a fortune to get one.
Not true, http://cgi.ebay.com/ebaymotors/2000-Pontiac-Sunfire-Engine-Computer-ECM-Programm- ed_W0QQcmdZViewItemQQhashZitem35a72ce64aQQitemZ230438004298QQptZMotorsQ5fCarQ5fT- ruckQ5fPartsQ5fAccessories
$83 shipped on ebay, and already flashed to your vin number.
It's very easy to replace compared to the countless other items we tried fixing first.
Once you get it, you need to follow these instructions:
In order for a theft deterrent vehicle to run, a password is communicated between the Instrument Panel Cluster (IPC) and the PCM. If a PCM (ECM) is replaced, the new PCM (ECM) needs to learn the correct password of the vehicle. When the new PCM is installed, the EEPROM calibration is flashed into the new PCM and the vehicle will learn the new password upon initial ignition ON. If the IPC is replaced, the PCM needs to learn the new password from the PC. The password learn procedure is as follows:
Attempt to start vehicle, then leave the ignition ON. The THEFT SYSTEM telltale will flash for 10 minutes .
When the THEFT SYSTEM telltale stops flashing, start the vehicle. Once the vehicle is running, the password is learned.
There's a good chance this is the problem, and if it is it's really a simple fix, we've all just be taught to think "car computer problems" must mean spending a fortune on fixing!
Good luck- let us know!
#244 of 306 2005 Sunfire stumps technicians
Mar 01, 2010 (2:52 pm)
Until 2 weeks ago my Sunfire ran great (almost 30 MPG) and gave me no problems. It has less than 70,000 miles (25K more than when I bought it 1 1/2 ago). Twice it acted like it was starting, not hesitating cranking sounds, but nothing happened. It was like I hadn't turned the key. Then last week after making a turn it just died. On the third try, it started and drove fine the 7 miles home. I took to my mechanic and after 45 miles, several starting and ideling for 30 minutes, they could find nothing. Oil and fuel pressures perfect. All connections fine. I drove less than 1.5 miles and it died again. And again started on second or third try. I have been told everything from fuel pump to short in the car somewhere. Has anyone else had this problem?
#245 of 306 Re: 98 Sunfire Malfunctions [mizzl3ytchy]
Apr 02, 2010 (4:17 am)
I would check for bad wiring down by your PMC
#246 of 306 1997 pontic sunfire
Apr 22, 2010 (3:59 am)
it was running fine yesterday quit today Help
#247 of 306 1997 pontic sunfire
Apr 22, 2010 (4:08 am)
It was running good , So I thought it just will not start today I dont know what could of happend over night but it did.. I am A single mom with one car if some one could Help I would be Thankful..
#248 of 306 1997 pontic sunfire
Apr 22, 2010 (4:18 am)
some one said it could be the brain is that true...
#249 of 306 sunfire 2004 not starting
Apr 23, 2010 (8:28 pm)
i parked my lastnight and when i started today morning it is not getting started. i tried jumper cable ,if my battery is not good but didnt work. Gas tank is half full.
can anybody help me? i really dont know ABCD of Auto.
#250 of 306 2000 Pontiac Sunfire
Apr 25, 2010 (12:43 pm)
The main problem is we have now replaced the Catalytic Converter 2 times now in this care. One time in Dec 2008 and just today. You can be driving the car and all of a sudden it starts to spudder then will shut off, the weird thing is it will start right back up? We had to have the Catalytic Converter replaced this time so it would pass inspection, we were told that since engine light was on and computer said this was the problem it had to be done to pass inspection. Has anyone else out there have problems with 2000 Pontic Sunfire? If you did please let me know what you did to fix this. We are about ready to get rid of this money pit soon. We only drove it about 1200 miles in the last 2 years.
#251 of 306 2003 sunfire refuses to start
Apr 27, 2010 (3:14 pm)
yesterday my 03 sunfire started sounding a bit gurgly when at an idle, to it down the highway and it performed well. At the bottom of the exit ramp heard the gurgly and a bit of a jerky motion will sitting with the brake applied, reached my destination in less then a mile and there was no clearing out the gurgle and the slight jumping it was doing , and yes i could see it in the rpm gauge it almost never bounces , but it was slightly.\r\ngot back in it an hour later and the low idle gurgle and jumping was still there took it back down the highway and performed just fine, same issues at the next exit. took it home and had another person move it for me and it was progressivly worse, had a neighbor look at it and we listened to the engine, sounds fine under the hood, but not in the cab, he suggested that it go on a machine and see if any codes are coming up on it , no dash lights appeared .
decided to move it up on the driveway , which has a slight incline to it and as i was backing it up it stalled out. now it will not start at all , but cranks over like it wants to. i had no choice but to drag it down to an auto shop and have it put on a computer this morning and no codes are coming up on it and no dash lights are coming on, no check engine, oil, etc...it appears from the computer check and my problem guages that it has no issue, but will not start, and yes there is over half a tank in it. not sure where to go next from here ??!!?? the plugs were found to be fouled out and were replaced but still will not turn over.... any ideas?
#252 of 306 2002 Sunfire 2.2L Just won't start????
May 05, 2010 (6:05 pm)
I have this 2002 sunfire which was sitting for about 6 months. I put some gas in it as well as some gas tank cleaner stuff. Then I charged the battery because it was dead, and turned it over fine. Got insurance for it about 5 days later and then went to turn it over and nothing, so I checked the battery eye and it was dead. I bought a new battery yesterday and it turned over just fine, I ran it for about 10 minutes and even drove it down the street. I turned it off and 1 minute later turned it back on no problem. I went upstairs for about 45 minutes and came down to go get dinner and nothing, it wouldn't turn over the dash lights were all blinking dully and then I noticed the light switch was on. So I turned it off and turned the switch off and tried again, but I still didn't hear the fuel pump engage nor did the starter click at all. Even if the lights were left on for 45 minutes there is no way in hell the battery should be dead it is brand new. When I turn the key I get nothing at all now. Can someone please help me as I have no idea what to do??????