Hard To Start Sputtering - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-21-2007, 08:16 AM   #11
Senior Member
True Car Nut
 
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Thanks: 0
Thanked 0 Times in 0 Posts
sandrock is on a distinguished road
Default

What you should do first are the low-to-no cost tips. May or may not help, but you won't be out anything.

Take the coils off, and clean any corrosion that would be between the ICM and the coils. Coat the terminals with dilectric grease, and reassemble. Do the same withthe ICM plate itself, where the harness plugs into it. Now, I am not sure if the ICM also grounds through the mount that it is on, but it would not hurt to clean that up either since you are that far into it.

Check your grounding point underneath the ICM. That is where your cam, crank, and ICM grounds are. Make sure all that is clean and tight. And throughout the cleaning process, check for any wires that may have rubbed or melted insulation.

While the above may not help, it certainly will not hurt.
sandrock is offline   Reply With Quote
Old 09-04-2007, 02:19 AM   #12
Senior Member
Certified GM nut
Thread Starter
 
redwingsfan34's Avatar
 
Join Date: Jan 2006
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
redwingsfan34 is on a distinguished road
Default

alrighty... the never ending problem

I finnaly found a tech 2 scanner, and got it scanned, and it pulled the same code: 0042, which said it is a "Ignition Control Bypass" Anyone know what that means?

sandrock: what is the ICM? (pretty much a newb when it comes to engine part names and such)

I was talking to a friends dad, before i pulled the code, and he said it sounds like a mass air flow sensor. Could that be the culprit?

Thanks!
redwingsfan34 is offline   Reply With Quote
Old 09-04-2007, 09:46 AM   #13
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Reading above.. and you asking about about what it could be..I found this.

[quote="willwren"The most common failure is a cam or crank sensor. However, it could be:

cam sensor
crank sensor
damage to the interruptor rings on the HB
ICM
associated wiring
PCM

It CANNOT be the coils. It'* absolutely impossible.[/quote]

The pcm will see a problem when either the crank or cam sensor is bad. Driverjohn had quite the go around with this code. Search on his posts for some possible answers/tests that he did to determine the root cause.
BillBoost37 is offline   Reply With Quote
Old 09-04-2007, 02:17 PM   #14
Senior Member
Certified GM nut
Thread Starter
 
redwingsfan34's Avatar
 
Join Date: Jan 2006
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
redwingsfan34 is on a distinguished road
Default

Quote:
Originally Posted by BillBoost37
Reading above.. and you asking about about what it could be..I found this.
The pcm will see a problem when either the crank or cam sensor is bad. Driverjohn had quite the go around with this code. Search on his posts for some possible answers/tests that he did to determine the root cause.
Ok so i should replace the crank and/or cam sensor? By looking at Driverjohn'* post about the cam/crank sensor, it looks to be a little more advanced in fixing than i am capable of.

Which would be the best culprit to fix first? The Cam or Crank Sensor?
I know DriverJohn replaced the cam sensor and it worked so is that what i should do?


Again Thanks for all the help guys, i really appreciate it!
redwingsfan34 is offline   Reply With Quote
Old 09-04-2007, 02:24 PM   #15
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

I would start with free. Remove the cam sensor and check for the magnet. Once you verify the magnet is in place..then consider the sensor.
BillBoost37 is offline   Reply With Quote
Old 09-04-2007, 05:35 PM   #16
Senior Member
Certified GM nut
Thread Starter
 
redwingsfan34's Avatar
 
Join Date: Jan 2006
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
redwingsfan34 is on a distinguished road
Default

Quote:
Originally Posted by BillBoost37
I would start with free. Remove the cam sensor and check for the magnet. Once you verify the magnet is in place..then consider the sensor.
ok, what am i looking for with the magnet? If its there? If its dirty? And if i find out the magnet is fine, what would be next? The cam sensor? Then the crank sensor?
redwingsfan34 is offline   Reply With Quote
Old 09-05-2007, 12:23 PM   #17
Senior Member
Certified GM nut
Thread Starter
 
redwingsfan34's Avatar
 
Join Date: Jan 2006
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
redwingsfan34 is on a distinguished road
Default

i am in the process of getting the AllData info for my bonneville, so hopefully it will be in there how to get to the sensors/magnet...
Its not to hard is it? I hope not...
redwingsfan34 is offline   Reply With Quote
Old 09-05-2007, 12:35 PM   #18
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

To check the magnet. You remove the cam sensor. The sensor is located down and to the left of the waterpump, if you are standing on the passenger side facing the water pump. Not the easiest of things to see. Once the sensor is out.. have someone slowly turn the motor by the HB bolt. You meanwhile look in the hole from the cam sensor for the magnet in the cam gear.

Assuming the magnet is there (this is good) you consider swapping out either the cam sensor or crank sensor.
BillBoost37 is offline   Reply With Quote
Old 09-05-2007, 01:16 PM   #19
Senior Member
Certified GM nut
Thread Starter
 
redwingsfan34's Avatar
 
Join Date: Jan 2006
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
redwingsfan34 is on a distinguished road
Default

Quote:
Originally Posted by BillBoost37
Assuming the magnet is there (this is good) you consider swapping out either the cam sensor or crank sensor.
Ok... is it just kinda going to be roulette here? Buy one if it doesn't fix the problem buy the other? Or just buy both and replace both to begin with?


Sorry about being a pest, but thats what you get with mechanic noobs
i really do appreciate the help
redwingsfan34 is offline   Reply With Quote
Old 09-05-2007, 02:07 PM   #20
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

What was your impression on reading up the searches of DJ and other'* experiences with that code?

Did it see as though there was a good test to determine one or the other?

You may be a mechanical noob..you aren't a forum noob though. Since I don't have that year or code, I'm going to suggest you spend more time researching and reading to save yourself money and time. That way you'll know what to look for, how to do it and what expected results you should have.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4T65E hard shifting when driven hard pontiacandryan 1992-1999 14 06-29-2009 05:25 PM
Sputtering on Start-up rbullock440 Performance, Brainstorming & Tuning 0 10-14-2008 05:04 PM
Very Minor Sputtering/Hesitation at low rpms. -*UPDATE PICS* Hans 1992-1999 4 04-27-2005 01:13 AM
Need suggestions for coughing and sputtering during WOT 1994SSEi 1992-1999 5 06-22-2004 07:12 PM
Bad Startes And Car sputtering tyler_s25 1992-1999 1 04-30-2004 12:06 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:28 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.