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CorvetteForum - Chevrolet Corvette Forum Discussion
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how do you know when the PCM is bad????????????
Bob Mosaic
on Sep 25, 2003
Jun 10, 2025
09:51 AM
by
89C4L98
18
2,784
C4 Tech/Performance
p0113 code
(
1
2
)
uracowman
on Dec 31, 2007
May 8, 2025
03:31 PM
by
All39
24
11,348
C5 Tech
Warning about water in gas tank.
svxfiles
on Jun 22, 2011
May 29, 2024
09:58 AM
by
Railroadman
13
8,396
C4 General Discussion
Bad pilot or torque tube bearing symptoms?
stevette17
on Jun 28, 2011
May 25, 2024
07:47 AM
by
geolouvi
14
29,398
C6 Tech/Performance
85 corvette died, code 44
buzzbomb
on May 8, 2010
Dec 18, 2022
05:34 PM
by
Sabre34
14
5,790
C4 Tech/Performance
Need advice on pinion nut
(
1
2
)
thedudeman321
on Sep 18, 2010
Dec 23, 2021
12:21 PM
by
Dutch84
24
4,018
C4 Tech/Performance
Symptoms of a bad ECM
(
1
2
)
pipe
on Apr 21, 2006
Oct 31, 2021
03:04 AM
by
Wilson53.vette
28
22,832
C4 Tech/Performance
water in fuel/tank 85-C4
allenw@icsgroup.com
on Jan 8, 2003
Sep 5, 2021
05:06 PM
by
Corvette Suzy
9
7,953
C4 Tech/Performance
Symptoms of bad MAF Burn-Off Module
dead_elvis_187
on Mar 13, 2012
Jul 8, 2021
01:24 PM
by
OldsMan
11
15,281
C4 Tech/Performance
Need 1977 Corvette L-48 Expert / Reference Pictures
MosportGreen66
on May 15, 2009
May 14, 2021
05:18 AM
by
hunt4cleanair
16
7,616
C3 General
1988 Engine Missing Under Load.
(
1
2
)
88BigGuy
on May 5, 2003
Apr 12, 2021
05:47 PM
by
Cruisinfanatic
22
7,182
C4 Tech/Performance
Bad MAF = Hesitation?
Gazpar
on Apr 21, 2010
Mar 20, 2021
08:06 PM
by
Elijah Rodriguez
6
2,488
C4 General Discussion
93 running bad
JesseMorales
on Nov 4, 2009
Sep 7, 2020
06:34 PM
by
fake
7
1,414
C4 General Discussion
Gas Cap Symptoms
ALK
on May 10, 2010
Jun 21, 2020
12:39 AM
by
Dano523
12
4,106
C6 Tech/Performance
What are signs the ECM is going bad?
(
1
2
)
tttjump
on Jun 15, 2009
May 14, 2020
04:08 PM
by
Wayne Lotito
21
52,872
C4 Tech/Performance
no fuel pressure question
(
1
2
3
)
Toby Van Horn
on May 27, 2010
Jun 24, 2019
01:32 PM
by
Argentimage
42
21,639
C5 Tech
You may have a "weak" maf sensor causeing hesitation or other unwanted effects
(
1
2
)
patrickt
on Sep 15, 2011
May 18, 2019
12:20 AM
by
darknit
36
11,666
C6 Corvette General Discussion
Wheel Bearing Question from accident HELP
(
1
2
)
robertpel9
on Jul 5, 2006
May 24, 2017
10:48 AM
by
UM Rebel
22
3,176
C5 General
85 and 88 maf interchangeability
(
1
2
)
rsfire
on Oct 2, 2011
Apr 22, 2017
01:32 PM
by
85vegasvette
20
12,757
C4 Tech/Performance
OK, I'm baffled - High RPM break-up or miss
(
1
2
3
...
Last Page
)
BarryK
on Jun 15, 2006
Nov 12, 2016
12:07 PM
by
kolsen911
64
17,120
C1 & C2 Corvettes
What are symptoms of a faulty fuel pressure regulator ??
Jims1988C4
on Jun 20, 2007
Sep 10, 2016
09:42 PM
by
takovr
12
25,689
C4 General Discussion
[Z06]
Service Traction Control??
(
1
2
3
)
DrtyHarry
on Oct 20, 2011
Aug 16, 2016
08:24 AM
by
JoesC5
45
26,683
C6 Corvette ZR1 & Z06
Crashes caused by EBCM failure?
(
1
2
3
...
Last Page
)
Blue Angel
on Dec 4, 2006
Mar 31, 2016
01:59 AM
by
UM Rebel
144
18,729
C5 General
What are the symptoms of a bad starter?
VQT88Vette
on Oct 16, 2002
Feb 10, 2016
08:29 AM
by
john6277
15
20,141
C4 Tech/Performance
Washed Cylinder Walls Symptoms?
(
1
2
)
Redeasysport
on May 20, 2005
Jan 12, 2016
11:27 PM
by
Tom400CFI
25
98,160
C4 Tech/Performance
1986 4+3 Overdrive Problem
inkyvette
on Jun 21, 2003
Jun 4, 2015
05:31 AM
by
hcbph
12
21,048
C4 Tech/Performance
Bad Optispark?
(
1
2
)
Bat Man
on Apr 20, 2003
May 24, 2015
06:32 PM
by
kcbc
33
4,450
C4 Tech/Performance
89 FUEL PUMP RELAY & fuse PROBLEM
postcar
on May 16, 2012
Apr 6, 2015
11:46 PM
by
Cliff Harris
8
57,332
C4 Tech/Performance
Bad clutch or...?
Rickm6
on Jan 7, 2012
Apr 4, 2015
08:54 PM
by
icntdrv55
11
6,377
C6 Tech/Performance
Symptoms of a Bad Opti-Spark..........
(
1
2
)
Hi-psi
on Apr 9, 2002
Jul 11, 2014
09:02 PM
by
Winnin'
21
36,055
C4 Tech/Performance
Piston to valve clearance ls1 ls6
blackula 99
on Jul 8, 2008
Jun 7, 2014
11:11 AM
by
spirit of le mans
7
11,014
C5 Tech
Might have signs of blown head gasket now
(
1
2
)
Stingraynut
on Aug 5, 2005
Jan 27, 2014
07:47 AM
by
Tact
37
10,474
C4 Tech/Performance
Automatic transmission fluid change question.
lvictores
on Jun 4, 2011
Nov 17, 2013
03:59 PM
by
jimcork1
17
28,057
C5 Tech
Is this a Opti spark problem?
(
1
2
)
QBLU92
on Jun 17, 2008
Sep 7, 2013
01:45 PM
by
ellymae
39
13,463
C4 Tech/Performance
Coolant Temp Sensor
fjm59vette
on Sep 19, 2006
May 19, 2013
01:23 PM
by
melthom
19
24,131
C4 Tech/Performance
Fuel pump problem?
(
1
2
)
lespaul4563
on Mar 3, 2012
Sep 7, 2012
02:03 PM
by
Nesher
21
5,047
C4 Tech/Performance
Wiped Cam Lobe and Lifter club...- Pics
(
1
2
3
...
Last Page
)
Rebelrob
on Nov 14, 2011
Aug 31, 2012
06:25 PM
by
jim2527
126
28,312
C3 Tech/Performance
Would air in coolant system do this?
killertiller
on Apr 17, 2012
Jul 31, 2012
10:04 PM
by
All_Motor_C5LS6
17
6,666
C5 Tech
Symptoms of a going Optispark?
bolowbc
on Jul 8, 2009
Jul 23, 2012
04:25 PM
by
Finalatom
6
16,099
C4 Tech/Performance
lt1 coolant reservoir question
prog-guru
on Aug 31, 2002
Jul 16, 2012
03:44 PM
by
RideWithGreg
16
6,694
C4 Tech/Performance
LOW Fuel Pressure
69SSC5
on Apr 25, 2011
Jul 8, 2012
06:58 PM
by
Kerfer
16
10,149
C4 Tech/Performance
HELP!!!! Hard to crank when hot
(
1
2
)
Strumoo
on Jul 8, 2010
Jun 17, 2012
11:54 AM
by
Strumoo
26
3,688
C1 & C2 Corvettes
Timing chain failure, weak master link?
(
1
2
3
...
Last Page
)
stevensa
on Apr 11, 2012
Jun 1, 2012
10:15 PM
by
02impactblue
64
12,175
Autocrossing & Roadracing
Rear End Yoke Trouble......
(
1
2
3
)
mayor28
on Mar 13, 2012
May 31, 2012
05:01 PM
by
mayor28
46
12,959
C3 General
Help with lag at hard acceleration on 85
(
1
2
)
richeskis
on Mar 28, 2012
May 12, 2012
02:03 PM
by
richeskis
31
5,771
C4 Tech/Performance
[Z06]
New Motor Symptoms: Should I Worry ??
(
1
2
3
...
Last Page
)
Dirty Howie
on Feb 5, 2012
May 10, 2012
02:36 PM
by
SSMOKE
181
15,621
C6 Corvette ZR1 & Z06
To much crank case pressure=blown oil pan gasket??
marine&hisvette
on May 5, 2012
May 8, 2012
04:16 PM
by
fnsblum
14
12,924
C6 Tech/Performance
What are the symptoms of a bad IAC valve/motor?
CentralCoaster
on Aug 15, 2003
May 6, 2012
10:47 PM
by
H P Bushrod
6
30,017
C4 Tech/Performance
ignition switch schematics - where are they?
mcgilles
on Apr 24, 2012
Apr 25, 2012
11:32 PM
by
Bill Curlee
6
12,483
C5 Tech
IAC Gone Bad? Symptoms? Rough Idle and hesitation...PLEASE HELP!
austinseanchris
on Apr 20, 2012
Apr 25, 2012
10:33 PM
by
LannyL81
17
46,615
C4 Tech/Performance
Smptoms of clogged catalydic converter.
ztheusa
on Apr 16, 2012
Apr 16, 2012
08:12 PM
by
ztheusa
7
3,050
C4 ZR-1 Discussion
Ignition switch help
RSVETTE
on Apr 15, 2012
Apr 16, 2012
08:44 AM
by
Jim Shea
2
783
C3 Tech/Performance
Can a bad steering wheel position sensor cause steering wheel to be crooked?
jmoffett
on Apr 9, 2012
Apr 13, 2012
10:18 PM
by
jmoffett
17
15,093
C6 Corvette General Discussion
How many with early C5's have had problems with their EBCM
(
1
2
3
)
egrand333
on Dec 15, 2011
Apr 11, 2012
03:56 PM
by
killain
48
12,552
C5 General
What are symptons of a bad fuel pump?
biaggio
on Apr 8, 2012
Apr 9, 2012
11:20 PM
by
RobRace10
4
2,167
C3 Tech/Performance
blown head gasket?
Fredbird
on Apr 7, 2012
Apr 8, 2012
09:18 AM
by
Fredbird
4
4,434
C4 Tech/Performance
can MAP/TPS sensors test good but still be intermittent?
mcm95403
on Mar 3, 2012
Apr 3, 2012
05:19 PM
by
mcm95403
7
2,494
C4 Tech/Performance
Power Steering Pump Diagnosis Install Help Needed
summerst
on Jan 17, 2012
Apr 1, 2012
08:18 AM
by
gunnerjuju
1
1,024
C4 Tech/Performance
Removing Catalytic Converter 1985 Corvette
jvette44
on Mar 16, 2012
Mar 17, 2012
11:02 AM
by
jvette44
7
10,626
C4 Tech/Performance
Aluminum Toxicity BEWARE!
(
1
2
)
73Corvette
on Mar 11, 2012
Mar 16, 2012
10:01 PM
by
scottyp99
30
4,312
C3 General
Oil filler cap, breathers or pcv valve?
(
1
2
)
Ak. Mal
on Mar 13, 2012
Mar 14, 2012
03:20 PM
by
7T1vette
25
35,533
C3 Tech/Performance
For sale 1994 LT1 Corvette catalytic converters
wbacall
on Nov 5, 2011
Mar 11, 2012
10:09 AM
by
THE 383 admiral
7
1,710
C4 Parts for Sale/Wanted
A4 Transmission Symptoms
tripleblackvert
on Mar 8, 2012
Mar 9, 2012
11:09 AM
by
Bluefire
4
873
C5 Tech
Can position sensor failure took me off track today
(
1
2
3
)
taken19
on Mar 4, 2012
Mar 7, 2012
05:06 PM
by
victorf
47
4,311
Autocrossing & Roadracing
EGR valve bad?? 1991 L98
kimrpaige
on Feb 21, 2012
Feb 22, 2012
07:42 AM
by
kimrpaige
4
8,551
C4 Tech/Performance
85 wiper switch & heater control valve
J W Drew
on Feb 21, 2012
Feb 22, 2012
01:39 AM
by
oldalaskaman
3
646
C4 General Discussion
Need help immediately horrible vibration/almost bounce like symptoms
(
1
2
)
skull
on Feb 17, 2012
Feb 19, 2012
01:10 PM
by
skull
21
2,146
C5 Tech
Bad ground?
hayabusa1285
on Feb 8, 2012
Feb 9, 2012
09:14 PM
by
hayabusa1285
17
6,419
C5 Tech
FYI-ZF6 Transmission Fluid Level
PLRX
on Feb 5, 2012
Feb 5, 2012
09:34 PM
by
Klondike
4
2,602
C4 General Discussion
New Motor Symptoms: Should I Worry ??
Dirty Howie
on Feb 5, 2012
Feb 5, 2012
07:16 PM
by
Dirty Howie
0
513
C6 Tech/Performance
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