Urgent car dies when I first try to start it!!!!!

[speedchic81]

I have a 1995 Buick Lesabre custom and yesterday when I went to start it, it will start but dies immediately. The next time I tried it it started right up. Since then I have to keep trying to start it 2 or 3 times because it keeps dying on me. The car also tends to shutter when I am driving no matter what speed I am at. Can you please help me, I am just getting ready to start an excellent job with the government and really need a car that isn't broken.

Thanks much,

Bre

[Andrewhuffman]

then sell it imeaditly because for the last year the 95 lesabre custom has been nothing but troble for me.

[Mickey#1]

Andrew - I don't think that's the kind of advice Bre is looking for. You'd be better off responding to your own thread on the fuel pump.

Bre - A bad fuel pressure regulator can allow fuel to leak into the vacuum line. Upon starting that extra fuel can cause the engine to flood. Turn the key to the run position a couple times to pressurize the system then pull the vacuum line off the fuel pressure regulator & check for fuel in the line.

Mike

[speedchic81]

I took my car to the shop and they have had it for 3 weeks now. The tested the fuel pressure and it is excellent. The mechanic seems to think that it is the security module or the computer. When he puts it on the scanner and it actually dies it reads there is a vats problem, when he goes to check the security module and we go to start the car again it will start right up. I finally got fed up and told him just to bypass the security module, he did and now it won't start. He said he needed a 5 volt wire to run to the computer and when he found it and ran it to the computer the wire only reads 2.5 volts. I have started that job and I have to be at work at 4 in the morning and nobody wants to get up at 3 in the morning to take me to work. I am at my wits end. Please help!!!!!!

[Andrewhuffman]

Dont want to be the one to say i told you so. but you need to check the crankshaft position sensor, mine went bad and it didnt show up on the computer. also the VATS it simply just a resistor in the key, a bypass is permantly installing a resistor befre the key. i also had this done. also, some of the sensors on the throttle body can cause your car to shut off... such as a MAF. id suggest checking thiese thing because they are really cheap from a junk year excepth the crankshaft position sensor, thats behind your harmonic balancer, which i also had to replace... another possibility is the fuel fump, sometimes it heats up and shuts off, which is a problem i had so i replaced it. also sometimes a fuel pump can lock up, which also happened to me. so i put in a new fuel pump and hotwired it to the fuse box. also, if you have spare time just check your compression, that will let you know if your problem is electrical... another simple thing to check is the vacum lines, they get old and dryrot, i also had this problem.

[Andrewhuffman]

i also have an extra computer im selling. it works and ive tested it in my car.
http://cgi.ebay.com/ebaymotors/ws/eB...3934869&rd=1,1
real cheap!

[Richard S]

I'm not saying this will fix it but my daughters car is a 95 and she could try to start it and it would die. She could also get it started sometimes and it would go for a little while and die in the middle of the road. I tested the battery and all the electrical. A guy at a battery shop told me it was in the red battery cable. GM put two postive cables in the red one. He took it apart and cleaned it up. Sold me a post for two cables. Fixed my problem. 4years ago. no problems since. He told me this was a common GM problem that year. Good luck.