Bad Miss - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-08-2010, 09:46 AM   #1
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
chauchi007 is on a distinguished road
Cool Bad Miss

Hi got a 2000 bonni ssei car runs great cold soon as it gets hot starts to miss and sputter can someone please help.
chauchi007 is offline   Reply With Quote
Old 04-08-2010, 09:51 AM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Check your coils. That'* the first place I look with a hot miss.
Danthurs is offline   Reply With Quote
Old 04-08-2010, 09:54 AM   #3
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

Can you isolate the cylinder in question? If so, a cracked plug, coils and even wires can cause issues once they heat up.

One easy way I like to look for misses is wait until dusk, start the car and mist the motor with water. A cracked coil or arching wire will light up and show you where the issue is.
BillBoost37 is offline   Reply With Quote
Old 04-08-2010, 09:55 AM   #4
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
chauchi007 is on a distinguished road
Default

whats the best way to check them?
chauchi007 is offline   Reply With Quote
Old 04-08-2010, 09:56 AM   #5
Junior Member
Thread Starter
 
Join Date: Apr 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
chauchi007 is on a distinguished road
Default

thank you i will try that
chauchi007 is offline   Reply With Quote
Old 04-08-2010, 10:02 AM   #6
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

You can pull the plugs and inspect them. You can scan the engine for codes. Your looking for P030X codes, the number for the X is the cylinder. If it'* a 300 that'* a random misfire. Here'* how you test the coil. https://www.gmforum.com/trouble-shooting-test-procedures-141/testing-coils-spark-plug-wires-278818/ Test them cold, write down the numbers. Then heat the engine up real good and test again.
Danthurs is offline   Reply With Quote
Old 04-08-2010, 10:11 AM   #7
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

And while testing the coils look for any cracks. The crack would make a nice spark at night with a misting.

Did I mention how much I like that test.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Bad, bad, bad, bad vibrations.... SilverSleeper8704 2000-2005 11 07-30-2010 06:42 AM
Engine miss, and bad fuel economy temery 1992-1999 2 02-01-2010 01:55 PM
bad miss under load Timothy's Buick 1992-1999 5 03-19-2008 08:42 AM
BAD one liners. Bad, really really bad, but still funny. BonnieBrougham Lounge 3 12-16-2004 06:38 PM
SuperCharger Pulley...bad for supercharger...bad for mileage Mr Bean 1992-1999 9 02-20-2003 12:34 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 11:59 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.