A Cars forum. AutoBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AutoBanter forum » Auto makers » Saturn
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

SL1 cylinder 1 misfire



 
 
Thread Tools Display Modes
  #1  
Old September 29th 05, 12:45 PM
Rodster
external usenet poster
 
Posts: n/a
Default SL1 cylinder 1 misfire

Does anyone have any suggestions on this problem. My SL1 gives a Cylinder 1
misfire code intermittently. It rides smooth from 0-55, then from 55-60 the
car actually shakes. The code goes away about half the time and the car
does not shake as much, Thanks for your input.

Ads
  #2  
Old September 29th 05, 02:26 PM
Bob Shuman
external usenet poster
 
Posts: n/a
Default

Some thoughts:

1. Make sure the plugs are still good, clean, and gapped properly (oil or
carbon build up can foul them). Also make sure the injector is firing
properly.

2. I've seen where the injector connector just needs to be removed and then
sprayed with some electronics contact cleaner then re-attached. I've also
seen where an injector can become clogged and not spray the proper fuel
pattern. A good fuel additive, like Techron, might be a cheap fix.

3. Make sure your wires are good. The insulation can break down over time
and not be noticeable but can cause arcing between wires or from the wire to
the engine and result in misfires.

4. I've seen where the coil tower pack can corrode and cause occasional
misses. You can easily remove the plug wires and then remove the assembly
to clean it thoroughly with a wire brush, etc. Remember to mark which wires
go where and route them exactly as they were originally.

5. Since you are having trouble with the misfire at higher speed, I'd also
not rule out that it could be a fuel delivery problem. When was the fuel
filter last changed? Could the fuel pump be starting to die and not
delivering enough pressure?

6. When was the air filter last changed? Although a long shot, a severely
clogged air filter might cause the problems at higher speed you are seeing
as well.

7. Although not likely your problem, make sure the throttle body is cleaned
occasionally. This usually manifests itself at idle not at high speed.

Good luck

Bob

"Rodster" > wrote in message
lkaboutautos.com...
> Does anyone have any suggestions on this problem. My SL1 gives a Cylinder

1
> misfire code intermittently. It rides smooth from 0-55, then from 55-60

the
> car actually shakes. The code goes away about half the time and the car
> does not shake as much, Thanks for your input.
>



  #3  
Old October 8th 05, 02:56 AM
David Teichholtz
external usenet poster
 
Posts: n/a
Default

I agree with Bob's suggestions. I recently acquired a 97 SL1 which I am
trying to sell. It had the "Service Engine Soon" light on. Autozone read
the code, misfire on cylinder 1. Plugs were totally burned out. I put in a
new set of plugs, light went out, but I was still getting some stumbling.
Cleaned the ignition wire connections which were very dirty, still no
improvement. I lightly misted the wires at night to see if there was any
arcing, there was not. Then, on a lark I swapped in a known good set of
wires (from my 95 SW1) and what a world of difference. Smooth as can be.
I'll add that normally I would have ohm'ed out the wires but some idiot must
have hid my volt/ohm meter.

-David

"Rodster" > wrote in message
lkaboutautos.com...
> Does anyone have any suggestions on this problem. My SL1 gives a Cylinder

1
> misfire code intermittently. It rides smooth from 0-55, then from 55-60

the
> car actually shakes. The code goes away about half the time and the car
> does not shake as much, Thanks for your input.
>



 




Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
clutch master & slave cylinder replacement notes (94 Civic EX) Abeness Honda 0 July 8th 05 06:10 AM
Did a brake flush damage my master cylinder? [email protected] Technology 13 July 7th 05 05:51 PM
why do car engines get noisier with age? Usual Suspect Technology 28 February 22nd 05 07:25 PM
Clutch Slave Cylinder Replacement/Repair Advice Pat Dreiding Mazda 4 October 18th 04 01:47 AM
1949 Cadillac: #1 Cylinder? Andreas Tovornik Antique cars 0 July 25th 03 02:47 PM


All times are GMT +1. The time now is 07:09 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 AutoBanter.
The comments are property of their posters.