1995 lesabre backfires and quits after starter is released.

"Steve Mackie" <stevemackie.TakeThisOut@gmail.com> wrote in message
news:yn9lj.10334$vp3.5515@edtnps90...
>> to diagnose this problem? Don't have an OBD-11 but I suppose I could
>> buy one if I had to . Thought mabey somebody on this group has run into
>> this problem before and knew what is was. Any Help would be
>> appericated.
>
> 99.99% sure that vehicle is not OBDII.
>
> Take the money you would have spent on an ODBII code reader and buy a new
> battery. Sound like it's in rough shape.
>
> Steve
>Your right, a 1995 is not probably a OBD2. from what I have just finished
>reading. On another group it is said that a crankshaft sensor may be the
>culprit Or it may be the ignition switch.
The main problem is that it Will start but will only run as long as the
switch is held in the start position, let it back to run and the engine
quits, if I force the issue it will sometimes backfire too.
Well guess its the process of discovery, when the weather warms up now its
about -3 below zero. our is the back yard. Thanks for the reply, Tom
A
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Steve Mackie" <stevemackie.DeleteThis@gmail.com> wrote:

>> to diagnose this problem? Don't have an OBD-11 but I suppose I could buy
>> one if I had to . Thought mabey somebody on this group has run into this
>> problem before and knew what is was. Any Help would be appericated.
>
>99.99% sure that vehicle is not OBDII.

Steve,

You are correct. The 1995 LeSabre is what is called a "transistion
vehicle" AKA OBD 1.5 - OBDI electrical interface (12-pin plug) but PCM
outputs OBDII codes. Damn few "civilian" model scanners will work
properly with these cars (my '94 Regal is also so afflicted).

Backfire makes me think bad spark timing or possibly crossfire

Regards,
Bill Bowen
Sacramento, CA
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

Tom A wrote:
> "Steve Mackie" <stevemackie.DeleteThis@gmail.com> wrote in message
> news:yn9lj.10334$vp3.5515@edtnps90...
>>> to diagnose this problem? Don't have an OBD-11 but I suppose I could
>>> buy one if I had to . Thought mabey somebody on this group has run into
>>> this problem before and knew what is was. Any Help would be
>>> appericated.
>> 99.99% sure that vehicle is not OBDII.
>>
>> Take the money you would have spent on an ODBII code reader and buy a new
>> battery. Sound like it's in rough shape.
>>
>> Steve
>> Your right, a 1995 is not probably a OBD2. from what I have just finished
>> reading. On another group it is said that a crankshaft sensor may be the
>> culprit Or it may be the ignition switch.
> The main problem is that it Will start but will only run as long as the
> switch is held in the start position, let it back to run and the engine
> quits, if I force the issue it will sometimes backfire too.
> Well guess its the process of discovery, when the weather warms up now its
> about -3 below zero. our is the back yard. Thanks for the reply, Tom
> A
>
>

Check the Ignition fuse in the fuse box. If it is blown it can do this.
What the problem comes from is the run circuit is being broken when the
key comes back from the start position. It could also be a bad ignition
switch.

--
Steve W.
Near Cooperstown, New York

Life is not like a box of chocolates
it's more like a jar of jalapenos-
what you do today could burn your ass tomorrow!
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"William H. Bowen" <wh_bowen DeleteThis @sbcglobal.net> wrote in message
>
> Backfire makes me think bad spark timing or possibly crossfire
>
> Regards,
> Bill Bowen
> Sacramento, CA

Very possible
How old are the plug wires? If original, or more than about 5 years, change
them.
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Edwin Pawlowski" <esp RemoveThis @snet.net> wrote in message
news:kZjlj.79$J41.16@newssvr14.news.prodigy.net...
>
> "William H. Bowen" <wh_bowen RemoveThis @sbcglobal.net> wrote in message
>>
>> Backfire makes me think bad spark timing or possibly crossfire
>>
>> Regards,
>> Bill Bowen
>> Sacramento, CA
>
> Very possible
> How old are the plug wires? If original, or more than about 5 years,
> change them.
Thanks for the reply, The plug wires are 2 years old [about 11,000 miles]
It doesnt backfire all the time. just when the battery gets low. So far I
have checked the fuses, their good. Checked the ign switch by using The dash
lights, they dim when the switch is turned to 'start' the engine starts runs
fine, then when I release the switch to the run position the engine dies
immediately. If I keep hitting the key to start it will sometimes backfire.
The battery is about 5 years old and I am off to get another one today but I
doubt that will make any difference, But Hey! it cant hurt. I got a Dodge
truck so i'm not without wheels anyway. I would be interested in how to
test the ignition switch more that just seeing the dash lights dim when the
starter is engaged. Anyway off to the battery buying for now
Thanks again Tom A. Shure wish I had a warm area to work in,
its -3 today.
>
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

Tom A wrote:
> "Edwin Pawlowski" <esp.DeleteThis@snet.net> wrote in message
> news:kZjlj.79$J41.16@newssvr14.news.prodigy.net...
>> "William H. Bowen" <wh_bowen.DeleteThis@sbcglobal.net> wrote in message
>>> Backfire makes me think bad spark timing or possibly crossfire
>>>
>>> Regards,
>>> Bill Bowen
>>> Sacramento, CA
>> Very possible
>> How old are the plug wires? If original, or more than about 5 years,
>> change them.
> Thanks for the reply, The plug wires are 2 years old [about 11,000 miles]
> It doesnt backfire all the time. just when the battery gets low. So far I
> have checked the fuses, their good. Checked the ign switch by using The dash
> lights, they dim when the switch is turned to 'start' the engine starts runs
> fine, then when I release the switch to the run position the engine dies
> immediately. If I keep hitting the key to start it will sometimes backfire.
> The battery is about 5 years old and I am off to get another one today but I
> doubt that will make any difference, But Hey! it cant hurt. I got a Dodge
> truck so i'm not without wheels anyway. I would be interested in how to
> test the ignition switch more that just seeing the dash lights dim when the
> starter is engaged. Anyway off to the battery buying for now
> Thanks again Tom A. Shure wish I had a warm area to work in,
> its -3 today.
>
>

Turning the ignition switch to start doesn't check the run position.
The problem you have is being caused by the power to the ignition being
cut off when you allow the key to return to the run position. The
occasional backfire is because of the loss of power allowing the fuel to
build up in the engine. Then when you try to start it that fuel gets
ignited and you get a backfire.

Go under the hood and see if you have voltage to the coil pack (pink
wire) with the key ON (not start). If you don't trace the power lead
back till you find power.
You will find power at the tan/black wire when the key is turned to start.
You have checked ALL the fuses correct. There is one in the relay center
as well as the fuse panel.

--
Steve W.
Near Cooperstown, New York

Life is not like a box of chocolates
it's more like a jar of jalapenos-
what you do today could burn your ass tomorrow!
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Tom A" <inamellamot.RemoveThis@comcast.net> wrote in message
news:ZdqdnYQioL0wuQvanZ2dnUVZ_judnZ2d@comcast.com...
>

> Thanks for the reply, The plug wires are 2 years old [about 11,000
> miles] It doesnt backfire all the time. just when the battery gets low.
> So far I have checked the fuses, their good. Checked the ign switch by
> using The dash lights, they dim when the switch is turned to 'start' the
> engine starts runs fine, then when I release the switch to the run
> position the engine dies immediately. If I keep hitting the key to start
> it will sometimes backfire. The battery is about 5 years old and I am off
> to get another one today but I doubt that will make any difference, But
> Hey! it cant hurt. I got a Dodge truck so i'm not without wheels anyway.
> I would be interested in how to test the ignition switch more that just
> seeing the dash lights dim when the starter is engaged. Anyway off to
> the battery buying for now

I'd think it was the ignition switch myself. About the only way I can think
of to test it would be to remove it. The dash lights dimming is not a valid
test. They're going to dim from the load of the starter.

--

-Mike-
mmarlowREMOVE.RemoveThis@alltel.net
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Mike Marlow" <mmarlowREMOVE.RemoveThis@alltel.net> wrote in message
news:6f79e$479637ce$62107bcf$12731@ALLTEL.NET...
>
> "Tom A" <inamellamot.RemoveThis@comcast.net> wrote in message
> news:ZdqdnYQioL0wuQvanZ2dnUVZ_judnZ2d@comcast.com...
>>
>
>> Thanks for the reply, The plug wires are 2 years old [about 11,000
>> miles] It doesnt backfire all the time. just when the battery gets low.
>> So far I have checked the fuses, their good. Checked the ign switch by
>> using The dash lights, they dim when the switch is turned to 'start' the
>> engine starts runs fine, then when I release the switch to the run
>> position the engine dies immediately. If I keep hitting the key to start
>> it will sometimes backfire. The battery is about 5 years old and I am off
>> to get another one today but I doubt that will make any difference, But
>> Hey! it cant hurt. I got a Dodge truck so i'm not without wheels anyway.
>> I would be interested in how to test the ignition switch more that just
>> seeing the dash lights dim when the starter is engaged. Anyway off to
>> the battery buying for now
>
> I'd think it was the ignition switch myself. About the only way I can
> think of to test it would be to remove it. The dash lights dimming is not
> a valid test. They're going to dim from the load of the starter.
>
> --
>
> -Mike-
> mmarlowREMOVE.RemoveThis@alltel.net
>

Ok, Got new battery in- same problem. Also checked all the MAX fuses on the
firewall panel, They are all good. Guess all thats left is wire tracing and
removing the ign switch. Also tried 2 different security keys just to see if
that would change anything- Nada. Got to look up how to remove the ignition
switch somewhere. The weather hasn't got above 0 yet today, Dammed if I
know why I still live here in this climate. Oh Well, bundel up and get back
at it.
Thanks again for the replys Tom A
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

> Ok, Got new battery in- same problem. Also checked all the MAX fuses on
> the firewall panel, They are all good. Guess all thats left is wire
> tracing and removing the ign switch. Also tried 2 different security keys
> just to see if that would change anything- Nada. Got to look up how to
> remove the ignition switch somewhere. The weather hasn't got above 0 yet
> today, Dammed if I know why I still live here in this climate. Oh Well,
> bundel up and get back at it.

Does the car run at all? While running, are any dummy lights on?

If it doesn't run, turn the ignition key on and watch the warning lights.
After the car is done it's bulb check, what lights are still on?

Steve
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Steve Mackie" <stevemackie.DeleteThis@gmail.com> wrote in message
news:Gyslj.13552$vp3.9885@edtnps90...
>> Ok, Got new battery in- same problem. Also checked all the MAX fuses on
>> the firewall panel, They are all good. Guess all thats left is wire
>> tracing and removing the ign switch. Also tried 2 different security keys
>> just to see if that would change anything- Nada. Got to look up how to
>> remove the ignition switch somewhere. The weather hasn't got above 0 yet
>> today, Dammed if I know why I still live here in this climate. Oh Well,
>> bundel up and get back at it.
>
> Does the car run at all? While running, are any dummy lights on?
>
> If it doesn't run, turn the ignition key on and watch the warning lights.
> After the car is done it's bulb check, what lights are still on?
>
> Steve
>
No- it only runs for about 1-2 secs while the switch is in the start
position. I just realized that even if I hold the switch in the start
position the engine still dies in 1-3 seconds. Little hard on the starter
tho.
After bulb check oil, volt, temp, check, and seat belt lights stay on.
If I try the start, only the volt and temp and seatbelt light stay on after.
All the lights go out when the engine does it's short little run. Does that
mean something? Well back at it I guess. Tom A
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

> After bulb check oil, volt, temp, check, and seat belt lights stay on.
> If I try the start, only the volt and temp and seatbelt light stay on
> after. All the lights go out when the engine does it's short little run.
> Does that mean something? Well back at it I guess. Tom A

Yes. Your battery light should not be on after a bulb check.

First, check the "ENG EMIS" fuse in the Underhood Electrical Centre #1, it's
the one on the passenger side.

If it's okay, disconnect the alternator connector. Not the big wire going to
the battery, the little plug. Turn the ignition to the "RUN" position. Does
the battery light come on? If not, replace the alternator.

Steve
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Steve W." <csr684NOT DeleteThis @yahoo.com> wrote in message
news:fn5bhk$vjl$1@aioe.org...
> Tom A wrote:
>> "Edwin Pawlowski" <esp DeleteThis @snet.net> wrote in message
>> news:kZjlj.79$J41.16@newssvr14.news.prodigy.net...
>>> "William H. Bowen" <wh_bowen DeleteThis @sbcglobal.net> wrote in message
>>>> Backfire makes me think bad spark timing or possibly crossfire
>>>>
>>>> Regards,
>>>> Bill Bowen
>>>> Sacramento, CA
>>> Very possible
>>> How old are the plug wires? If original, or more than about 5 years,
>>> change them.
>> Thanks for the reply, The plug wires are 2 years old [about 11,000
>> miles] It doesnt backfire all the time. just when the battery gets low.
>> So far I have checked the fuses, their good. Checked the ign switch by
>> using The dash lights, they dim when the switch is turned to 'start' the
>> engine starts runs fine, then when I release the switch to the run
>> position the engine dies immediately. If I keep hitting the key to start
>> it will sometimes backfire. The battery is about 5 years old and I am off
>> to get another one today but I doubt that will make any difference, But
>> Hey! it cant hurt. I got a Dodge truck so i'm not without wheels anyway.
>> I would be interested in how to test the ignition switch more that just
>> seeing the dash lights dim when the starter is engaged. Anyway off to
>> the battery buying for now
>> Thanks again Tom A. Shure wish I had a warm area to work in,
>> its -3 today.
>>
>>
>
> Turning the ignition switch to start doesn't check the run position.
> The problem you have is being caused by the power to the ignition being
> cut off when you allow the key to return to the run position. The
> occasional backfire is because of the loss of power allowing the fuel to
> build up in the engine. Then when you try to start it that fuel gets
> ignited and you get a backfire.
>
> Go under the hood and see if you have voltage to the coil pack (pink wire)
> with the key ON (not start). If you don't trace the power lead back till
> you find power.
> You will find power at the tan/black wire when the key is turned to start.
> You have checked ALL the fuses correct. There is one in the relay center
> as well as the fuse panel.
>
> --
> Steve W.
> Near Cooperstown, New York
>
> Life is not like a box of chocolates
> it's more like a jar of jalapenos-
> what you do today could burn your ass tomorrow!

I think you are correct, I will get to power tracing this weekend when it
warms up. I will answer when I find the problem. Thanks again, Tom.
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released. 

"Steve Mackie" <stevemackie.RemoveThis@gmail.com> wrote in message
news:Nbwlj.36313$fj2.11779@edtnps82...
>> After bulb check oil, volt, temp, check, and seat belt lights stay on.
>> If I try the start, only the volt and temp and seatbelt light stay on
>> after. All the lights go out when the engine does it's short little run.
>> Does that mean something? Well back at it I guess. Tom A
>
> Yes. Your battery light should not be on after a bulb check.
>
> First, check the "ENG EMIS" fuse in the Underhood Electrical Centre #1,
> it's the one on the passenger side.
>
> If it's okay, disconnect the alternator connector. Not the big wire going
> to the battery, the little plug. Turn the ignition to the "RUN" position.
> Does the battery light come on? If not, replace the alternator.
>
> Steve
>Steve I don't understand the "bulb check", In my 1999 Dodge truck all the
>bulbs will come on and go off when it has gone through it's proccess. This
>was Bulb check.
This 1995 lesabre does not work that way. All the bulbs come on when the
key is turned to run and "Stay on" untill the key is turned to the start
and back. "Battery, temp, oil, and engine check come on and stay on,"
Security and air bag are intermitten. They [security, air bag] flash and
go out seems like when they feel like it.

I got a question, Would a code reader [of any kind] shed any light on this
no run condition?
Thanks Tom A
 >> Stay informed about: 1995 lesabre backfires and quits after starter is released.