Pennock's Fiero Forum
  Technical Discussion & Questions
  3800 misfire found cylinder 5

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


 next newest topic | next oldest topic
3800 misfire found cylinder 5 by LoW_KeY
Started on: 06-02-2014 11:45 AM
Replies: 6 (235 views)
Last post by: LoW_KeY on 06-02-2014 08:12 PM
LoW_KeY
Member
Posts: 8081
From: Hastings, MI
Registered: Oct 2001

Feedback score: N/A
Leave feedback





Total ratings: 150
Rate this member
Report this Post06-02-2014 11:45 AM Click Here to See the Profile for LoW_KeYSend a Private Message to LoW_KeYEdit/Delete MessageReply w/QuoteDirect Link to This Post
Found my misfire cylinder 5 giving me grief. 320 misfires. So I guess tomorrow I check plug, then go to parts store to buy plug wire. I dont have a spare to test grrr all the luck. I'm guessing one of the 2?

------------------

3800 SC/IC Formula whines more than your girl... 12.7@113 330 HP/430TQ
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107

IP: Logged
PFF
System Bot
Jfrost
Member
Posts: 1088
From: Brookfield, IL
Registered: Jul 2009

Feedback score:    (29)
Leave feedback

Rate this member
Report this Post06-02-2014 12:38 PM Click Here to See the Profile for JfrostSend a Private Message to JfrostEdit/Delete MessageReply w/QuoteDirect Link to This Post
Definitely could be a plug/wire, I'd also check the coil packs themselves. Sometimes moisture can get in there and cause some rust and/or corrosion, this happened on my GTP before. If so, use some sandpaper to clean them up.

------------------
Project L67 Fiero

IP: Logged
LoW_KeY
Member
Posts: 8081
From: Hastings, MI
Registered: Oct 2001

Feedback score: N/A
Leave feedback





Total ratings: 150
Rate this member
Report this Post06-02-2014 01:13 PM Click Here to See the Profile for LoW_KeYSend a Private Message to LoW_KeYEdit/Delete MessageReply w/QuoteDirect Link to This Post
wouldn't it cause a bad misfire on 2 if coil was bad? I hot tomorrow off so I'll play around being i know its cylinder 5.

------------------

3800 SC/IC Formula whines more than your girl... 12.7@113 330 HP/430TQ
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107

IP: Logged
phonedawgz
Member
Posts: 17011
From: Green Bay, WI USA
Registered: Dec 2009

Feedback score:    (23)
Leave feedback





Total ratings: 290
Rate this member
Report this Post06-02-2014 01:50 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
Close down your plug gap to 40 and see if that clears it up.
IP: Logged
Justinbart
Member
Posts: 3259
From: Flint, MI
Registered: Sep 2009

Feedback score: N/A
Leave feedback





Total ratings: 119
Rate this member
Report this Post06-02-2014 04:16 PM Click Here to See the Profile for JustinbartSend a Private Message to JustinbartEdit/Delete MessageReply w/QuoteDirect Link to This Post
Swap the plug with another cylinder see if it follows. Swap a wire with another cylinder see if it follows. etc etc. Don't just throw a ton of parts at it all at once.

------------------
Turbo 3800 E85 F23 5spd spec5
10.91@133.1

IP: Logged
Darth Fiero
Member
Posts: 5888
From: Waterloo, Indiana
Registered: Oct 2002

Feedback score: (5)
Leave feedback





Total ratings: 360
Rate this member
Report this Post06-02-2014 06:10 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by LoW_KeY:

wouldn't it cause a bad misfire on 2 if coil was bad? I hot tomorrow off so I'll play around being i know its cylinder 5.



I have seen the coils themselves crack and leak spark only on one cylinder. The other cylinder works fine in these cases (producing a misfire code on only one cylinder). So yes, it is possible you COULD have a bad coil that caused a misfire only on one cylinder.

------------------
OVERKILL IS UNDERRATED

Custom GM OBD1 & OBD2 Tuning | Engine Conversions & more | www.gmtuners.com

IP: Logged
LoW_KeY
Member
Posts: 8081
From: Hastings, MI
Registered: Oct 2001

Feedback score: N/A
Leave feedback





Total ratings: 150
Rate this member
Report this Post06-02-2014 08:12 PM Click Here to See the Profile for LoW_KeYSend a Private Message to LoW_KeYEdit/Delete MessageReply w/QuoteDirect Link to This Post
thanks for heads up. I'll change plug wire and plug see if its still there. If it is I'll hit zzp new coil 25 bucks.

I'd change to different cyclinder but have no scanner to read things came up p0300... guy at shop said 5 was biggest issue

------------------

3800 SC/IC Formula whines more than your girl... 12.7@113 330 HP/430TQ
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107

IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



 Copyright (c) 1999, C. Pennock