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CorvetteForum - Chevrolet Corvette Forum Discussion
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code 42
kimmer
on Oct 22, 2009
Aug 5, 2025
06:16 AM
by
John@scc
8
2,028
C4 General Discussion
Tan distributor bypass wire
C-4 owner
on Mar 23, 2010
Mar 12, 2022
03:36 PM
by
Executive.Director
13
6,145
C4 Tech/Performance
C4 - code 42 (Electronic Spark Timing Circuit (EST))
tmcorvette
on Nov 14, 2003
Mar 7, 2020
06:14 PM
by
Jer Frenchik
12
22,625
C4 Tech/Performance
Can anyone with a 84 vette do this for me.???
(
1
2
)
Firstvette84
on Mar 8, 2011
Jan 26, 2014
12:35 AM
by
Cliff Harris
28
6,843
C4 General Discussion
Sway Bar End Links
ILVET
on Aug 5, 2003
Dec 18, 2012
09:10 PM
by
thmehr
19
3,342
C5 Tech
code 42 after setting timing
blakngold4life
on May 1, 2012
May 5, 2012
09:10 PM
by
blakngold4life
8
6,746
C4 Tech/Performance
Ignition Timing not making sense
1986 4+3 CORVETTE
on Apr 18, 2012
Apr 20, 2012
09:58 AM
by
HlhnEast
6
2,652
C4 Tech/Performance
1986 Corvette Ignition Module
racerseks
on Jan 12, 2012
Jan 12, 2012
09:20 PM
by
69427
7
6,036
C4 Tech/Performance
1991 L98 Revving/Bogging Problems
laulie
on Apr 1, 2011
Oct 25, 2011
12:13 AM
by
Red Dragon On DL
11
3,966
C4 Tech/Performance
Whats a 1962 Corvette worth?
John510
on Jul 24, 2011
Jul 28, 2011
10:54 PM
by
captain cook
18
5,242
C1 & C2 Corvettes for Sale/Wanted
Where is the EST wire?
90C4sRule
on Apr 25, 2011
Apr 25, 2011
08:16 PM
by
90C4sRule
1
3,155
C4 Tech/Performance
How far are you pushing LT1/4 HP/Tq with your hotcam/similar cam <230 degree
89'Bowtie
on Mar 7, 2011
Mar 9, 2011
06:42 AM
by
89'Bowtie
19
9,202
C4 Tech/Performance
DIY Network 8pm est Tonight - Corvette Man Cave
(
1
2
)
mmccarthy
on Oct 1, 2010
Mar 8, 2011
05:48 PM
by
bobs77vet
28
3,002
C3 General
Disconnect EST to set IAC ????
rodj
on Jan 1, 2011
Jan 6, 2011
06:41 PM
by
GREGGPENN
12
2,385
C4 Tech/Performance
Speed Test Drive 2011 Corvette
(
1
2
)
Fast Cop
on Dec 5, 2010
Dec 25, 2010
03:23 PM
by
jrose7004
28
2,659
C5 General
'86 Trouble Codes
smallblock87
on Oct 28, 2010
Oct 29, 2010
09:07 PM
by
smallblock87
4
734
C4 Tech/Performance
C4 Corvette Exhaust
(
1
2
)
C4 Monster
on Sep 28, 2010
Oct 5, 2010
08:21 AM
by
johnnyevans
32
2,584
C4 Tech/Performance
1989 Corvette Code 42
C4 Monster
on Sep 12, 2010
Sep 13, 2010
09:17 PM
by
C4 Monster
10
4,217
C4 Tech/Performance
Low idle and surging after warm up?
AUTO90VETTE
on Sep 6, 2010
Sep 6, 2010
11:06 PM
by
AUTO90VETTE
8
7,967
C4 Tech/Performance
1989 Connector confusion
(
1
2
3
)
GREGGPENN
on Aug 6, 2010
Aug 8, 2010
11:16 PM
by
rodj
44
2,464
C4 Tech/Performance
What the best way to remove this broken bleeder screw
rinosaur
on Aug 5, 2010
Aug 6, 2010
10:28 AM
by
ch@0s
15
33,051
C4 General Discussion
change timing on an l98 without a chip?
(
1
2
)
ekess744
on May 18, 2008
Jun 2, 2010
03:52 AM
by
USAsOnlyWay
21
3,858
C4 Tech/Performance
Est value 74 Corvette / 4 speed / 350
ixlor8
on May 28, 2010
May 29, 2010
11:58 AM
by
ixlor8
10
1,623
C3 General
I got my First 1991 L98..Some Questions I have like setting timing
Mikes1991
on Apr 24, 2010
May 9, 2010
07:57 AM
by
1991-C4
8
4,454
C4 Tech/Performance
Code 42 Help
Red-Lt1
on Mar 21, 2010
Mar 23, 2010
08:18 AM
by
onedef92
2
2,076
C4 Tech/Performance
New Optispark and now have new problem
94VetteMonster
on Mar 7, 2010
Mar 8, 2010
08:25 PM
by
tblt44
4
832
C4 Tech/Performance
Code# 42
kimmer
on Oct 22, 2009
Oct 23, 2009
11:48 PM
by
quickcat
10
1,115
C4 Tech/Performance
L98 Coil Module testing ?
robvan
on Oct 10, 2009
Oct 11, 2009
10:58 AM
by
AGENT 86
11
4,297
C4 Tech/Performance
i can't find the est timing connector to set my idle
SmokinRide
on Sep 12, 2009
Sep 12, 2009
07:56 PM
by
floridamale
2
701
C4 Tech/Performance
Engine revs correctly with EST plug unconnected?
wa4ky
on Aug 15, 2009
Aug 18, 2009
10:40 AM
by
engle1147
6
650
C4 Tech/Performance
Failed emissions: too high HC at idle
K87ZZ4
on Jul 11, 2009
Aug 16, 2009
02:02 AM
by
K87ZZ4
16
7,095
C4 Tech/Performance
Troubleshooting from the FSM..ECM Connectors?
Pwnage1337
on Aug 10, 2009
Aug 10, 2009
12:24 PM
by
Pwnage1337
2
622
C4 Tech/Performance
Timing for 1991 L98
jimm07
on Aug 6, 2009
Aug 7, 2009
09:29 PM
by
AGENT 86
10
8,306
C4 Tech/Performance
Timing issue
(
1
2
)
Blastoff
on Aug 2, 2009
Aug 7, 2009
10:14 AM
by
AGENT 86
23
2,043
C4 Tech/Performance
Mike yeager - east coast performance
(
1
2
)
01_torch_red_vette
on Jun 5, 2009
Jun 12, 2009
12:43 PM
by
neokorros
23
2,469
C5 General
Forza 2 ... Sunday March 22nd, 10A EST ... Racing Series III
(
1
2
)
CDN_Wolf_eh
on Mar 16, 2009
Mar 24, 2009
04:36 PM
by
southernshark
28
1,529
Canadian Events
Quick EMERGENCY Question - Timing Adjustment
Corvette505
on Feb 14, 2009
Feb 15, 2009
12:57 PM
by
TWISTERUP
7
420
C4 General Discussion
Last try at fixing, or the vette is sold!!! Any help out there!?
(
1
2
3
)
cwyates4
on Oct 27, 2008
Oct 29, 2008
08:39 PM
by
MK 82
49
2,842
C4 Tech/Performance
Ignition timing for 1982
kensblue82
on Oct 26, 2008
Oct 26, 2008
08:13 PM
by
headache57
2
8,278
C3 Tech/Performance
How do you set the timing on a 91 l98???
yourboy
on Oct 18, 2008
Oct 20, 2008
08:34 PM
by
coupeguy2001
5
2,191
C4 Tech/Performance
Can someone check build status on #MZRZ52 ?
jraz
on Sep 21, 2008
Sep 22, 2008
06:17 PM
by
jdurhan
8
511
C6 Corvette General Discussion
Code 41 -- I am nearly bald!
(
1
2
)
ceberus
on Aug 19, 2008
Aug 23, 2008
02:21 PM
by
MikeC4
21
1,668
C4 Tech/Performance
est module trouble code
purplehayes
on Aug 7, 2008
Aug 10, 2008
09:55 AM
by
purplehayes
13
837
C4 Tech/Performance
Idle problem cont. May have found solution...
(
1
2
3
)
cwyates4
on Jul 12, 2008
Jul 26, 2008
03:12 PM
by
cwyates4
57
4,257
C4 Tech/Performance
Codes?
(
1
2
)
jm22876
on Jul 5, 2008
Jul 9, 2008
09:38 PM
by
pcolt94
21
1,563
C4 Tech/Performance
Still fighting an idle problem, need a little help.
cwyates4
on Jul 9, 2008
Jul 9, 2008
07:57 PM
by
cwyates4
7
627
C4 Tech/Performance
ECM connector schematics for -90
Pelleplutt
on May 26, 2008
Jun 27, 2008
02:17 PM
by
Vette73
5
2,280
C4 Tech/Performance
L98 timing procedure - just want to make sure...
Joe C
on May 24, 2008
May 25, 2008
02:54 PM
by
thirdtimevetteowner
12
37,213
C4 Tech/Performance
order info translation please...
adkping
on May 9, 2008
May 9, 2008
12:36 PM
by
talon90
4
729
C6 Corvette General Discussion
electrical issue, engine code 42
CrippleDave
on Feb 17, 2008
Feb 17, 2008
11:02 PM
by
Dads90
2
687
C4 Tech/Performance
Help!! Optispark?
paulpita07
on Oct 14, 2007
Oct 15, 2007
03:24 AM
by
MMOCguy
7
643
C4 Tech/Performance
Estamite for my C3 paint job
ptroxx
on Sep 9, 2007
Oct 11, 2007
01:08 AM
by
vttedrm
12
1,843
Paint/Body
Ignition Timing
Bill Cude
on Sep 24, 2007
Sep 25, 2007
06:06 PM
by
Da Mail Man
6
789
C4 General Discussion
What year C3 is best?
(
1
2
3
...
Last Page
)
iamsuperchris
on Aug 7, 2007
Aug 15, 2007
06:01 PM
by
SILVERSIXX
130
8,351
C3 General
Erratic timing and idle only with EST connected.
(
1
2
3
...
Last Page
)
86PACER
on Jun 24, 2007
Jul 3, 2007
12:07 PM
by
mseven
69
28,842
C4 Tech/Performance
Wheel Refinishing
Clay Assassin
on Jul 2, 2007
Jul 3, 2007
10:08 AM
by
dans87vette
6
745
C4 Tech/Performance
Dyno Sheet from G5X3 Cam only?
Joe_G
on Jun 18, 2007
Jun 20, 2007
02:28 PM
by
TTRotary
13
3,529
C6 Tech/Performance
1985 model, codes 13 and 42 after mods
rel3rd
on Mar 18, 2007
Mar 21, 2007
07:54 PM
by
rel3rd
5
1,979
C4 Tech/Performance
Distributor Reference
TPI84GMC
on Mar 13, 2007
Mar 13, 2007
08:52 AM
by
AGENT 86
2
427
C4 Tech/Performance
EST Wire?
Marcusk408
on Feb 23, 2007
Feb 23, 2007
12:47 AM
by
Big2Bird
2
966
C3 General
whats the EST and where is it
c4 4 me
on Aug 25, 2006
Aug 25, 2006
06:51 PM
by
RRT vette
6
717
C4 Tech/Performance
Pic of EST connector??
1991 C4
on Aug 23, 2006
Aug 23, 2006
11:24 PM
by
1988redvette
1
924
C4 Tech/Performance
EST connector location
Oden
on Aug 21, 2006
Aug 21, 2006
10:04 AM
by
RRT vette
1
1,490
C4 Tech/Performance
Timing my 1990 L98 today....which is the EST wire?
XtremeVette
on Jun 29, 2006
Jun 29, 2006
10:38 PM
by
XtremeVette
15
5,435
C4 Tech/Performance
My '85 won't start....Help!
(
1
2
3
)
SilverMom
on Jun 24, 2006
Jun 29, 2006
12:13 PM
by
Blownfuel1
44
2,723
C4 Tech/Performance
WTB non-vacuum advance HEI distributor
69Myway
on Jun 24, 2006
Jun 24, 2006
05:34 PM
by
69Myway
0
271
C3 Parts for Sale/Wanted
est wire
olds442/vette
on Apr 14, 2006
Apr 15, 2006
10:00 AM
by
RRT vette
7
4,018
C4 Tech/Performance
LT1 Ignition Issues
Mastercraft
on Apr 7, 2006
Apr 8, 2006
11:36 PM
by
Mastercraft
6
1,194
C4 Tech/Performance
Sway Bar End Links
INTHERED
on Mar 16, 2006
Mar 29, 2006
07:15 PM
by
Ttop34
5
1,030
C5 Tech
where are those time slips? all this hp and i dont see any one posting slips
(
1
2
3
)
9secondflat
on Jan 11, 2006
Feb 27, 2006
05:17 PM
by
PRAY
40
2,079
Performance Results
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