stalling problems - Chevy Impala SS Forum
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 02-08-2006, 10:54 AM
bcain3
Guest
 
Posts: n/a
Post

Hey everyone, have a problem and cannot find the answer. I have a 94 Caprice with the LT1, 9C1 police package. The car stalls at lower speeds. Not all the time, maybe once a week. Example, I start the car, and go to take off, and say around 7-15 mph the car will stall, so I shift to N and the car will start back up. I shift to D and go. Like it just lost spark. You cannot tell when the car is going to stall, which makes it dangerous to pull into traffic. The car has 165,000 miles and I love the car. Dont want to get rid of it but this is becoming unsafe to drive. The parts I will list have been installed over the last 20,000 miles. The opti-spark, plugs, plug wires. O2 sensor, fuel pump and fuel filter. I dont want to just start putting parts into it. The car is not worth alot. If there is ANY strong guesses I would try. I just do not want to put say a computer then a relay then something elst and on and on. I take it to a garage and they tell me that the car needs to act up for them, well heck it only does it know and then, and I cannot leave my car until it does. Please help me! Thanks

Brian
1994 Caprice
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 02-08-2006, 01:08 PM
Raxstone
Guest
 
Posts: n/a
Post

Same thing with my 95. However, it hasn't happened in over a month now. I'm thinking in my case it was just old gas -- the car sat for about 6 or 7 months with a full tank but without fuel stabilizer. Any chance this could be the case with yours?
post #3 of 9 (permalink) Old 02-09-2006, 04:54 PM
bcain3
Guest
 
Posts: n/a
Post

I don't think it has anything to do with the fuel. I drive my car everyday. I have even tried differant gas stations, and tried 87-94 octane fuel. Thanks for the reply. Did you get yr problem fixed?

Brian
 
post #4 of 9 (permalink) Old 02-09-2006, 06:45 PM
SiGuyUWP
Guest
 
Posts: n/a
Post

Check the strainer on the fuel pump. I had a 91 Mazda that would randomly die when it was below half tank, because the strainer was so clogged fuel could only come through the top of the strainer. I had replaced damn near everything else before I found this.

Check for other little things, carbon buildup on EGR valve, plug gap....can't really think of anything else off hand. Keep us posted and good luck.
post #5 of 9 (permalink) Old 02-10-2006, 04:45 PM
bcain3
Guest
 
Posts: n/a
Post

Thanks for the idea. I will try that and see what happens. I am hoping it is something stupid. The car never seems to act up once it is up to normal running temp. What do you think of the car running rich, and messing with the O2 sensor? I know I just replaced it (21,000 miles ago) but maybe this one went bad as well?? Would the O2 shut the car down like that?
Brian
post #6 of 9 (permalink) Old 02-14-2006, 05:17 AM
SiGuyUWP
Guest
 
Posts: n/a
Post

I don't think the O2 sensor will kill the car. Even on an OBD-2 car, the worst it will do is throw a check engine light (at least as far as I know). I'm still pretty stumped though, if I think of anything else I'll post up.
post #7 of 9 (permalink) Old 02-14-2006, 07:01 AM
bcain3
Guest
 
Posts: n/a
Angry

Well I appreciate all ideas. Thanks guys.
Brian
post #8 of 9 (permalink) Old 02-14-2006, 10:24 AM
Raxstone
Guest
 
Posts: n/a
Post

Well, a bad O2 sensor does do wierd things. It effected the idle (of course) and effected the shifting. When cold, the 02 does nothing. Once warm a bad O2 will throw a CEL and put the car in closed loop. Like I mentioned above, the car hasn't stalled for a couple months now, so I am sure it was just bad fuel from sitting. Although, I did replace a bad O2 just a little while ago. I really don't think the O2 would cause the stalling unless you noticed other characteristics of a bad O2.
post #9 of 9 (permalink) Old 02-14-2006, 04:57 PM
bcain3
Guest
 
Posts: n/a
Post

I have a post in the Impala section and a guy named Larry told me about a engine coolant temp sensor, so I am going to try that.
Brian
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy Impala SS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome