icm

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94, borg, bracket, c4, coil, control, corvette, dielectric, grease, icm, ignition, installation, module, testing, warner

Ignition Control Module question on a 94...

Coves4me on May 16, 2011

Oct 31, 2025 03:54 PM
by Ajc8

11

5,503

C4 Tech/Performance

babd, bad, check, corvette, dead, denver, failure, fan, flashed, fuses, gm, icm, knw, pcm, symptoms, symptomsobd

how do you know when the PCM is bad????????????

Bob Mosaic on Sep 25, 2003

Jun 10, 2025 09:51 AM
by 89C4L98

18

2,824

C4 Tech/Performance

92, bad, c4, code, corvette, data, enable, fixed, fuel, h62, icm, light, security, stream, trouble

code h62 fixed with new icm?

littlesk8cracker on Nov 29, 2010

Jul 22, 2018 01:27 PM
by jsuzz_22

8

5,342

C4 Tech/Performance

95, accelaration, bad, bogging, corvette, heated, icm, location, lose, loss, lt1, oxygen, power, resistance, sensor

Loss of power, 95 LT1

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1 2)

MikeC4 on Jul 29, 2005

Feb 15, 2018 05:05 PM
by pcolt94

32

19,603

C4 Tech/Performance

3000, advance, c4, coil, corvette, delteq, distributor, icm, idle, ignition, lt1, module, picture, problem, rpm, timing

What on earth is a coil module? (NOT ignition module)

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1 2)

Terrible Juan on Aug 27, 2007

Jul 2, 2016 04:15 PM
by 2vettefamily

39

9,568

C4 Tech/Performance

12, 1994, 51, c4, code, coevette, corvette, dtc62, ecm, error, fail, gm, icm, pin, prom

Possible failing ECM or PROM

daveshea on Oct 7, 2011

Oct 13, 2015 11:51 AM
by confab

13

8,059

C4 Tech/Performance

36, 42, change, code, coil, dead, die, driving, engine, heads, icm, ignition, lt1, opti, turn, wiring

94 LT1 just turns off while driving? Help?

mdell2 on Jan 15, 2010

Aug 13, 2014 03:07 AM
by lt4obsesses

15

32,976

C4 Tech/Performance

1994, 36, bbd, c4, car, change, code, corvette, corvetteforum, dtc, icm, opti, optispark, replacement, running, spark

DTC/Code 36 After Optispark Replacement

redzr1 on Aug 14, 2011

Jun 26, 2014 03:00 PM
by DaveD2

7

10,751

C4 Tech/Performance

1984, 1993, bad, connection, corvette, distributor, ecm, faulty, firing, icm, miss, opti, optispark, spark, symptom, symptoms

Is this a Opti spark problem?

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1 2)

QBLU92 on Jun 17, 2008

Sep 7, 2013 01:45 PM
by ellymae

39

13,479

C4 Tech/Performance

backfire, bad, build, carbon, corvette, cylinder, diagnosis, gasket, head, icm, intake, lt1, make, misfire, motor, sparkplug

94 LT1 Missfire-How did you fix it?

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1 2 3 ... Last Page)

asjwalsh on Jul 19, 2011

Aug 29, 2013 12:14 PM
by ken94

100

45,439

C4 Tech/Performance

1994, c4, corvette, diagram, fire, forum, icm, ignition, issues, l98, location, motor, spark, start, wont

1994 Corvette will not start ( no spark)

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1 2 3)

oliver on Jun 2, 2011

May 12, 2013 01:44 PM
by Mike Erskine

40

32,214

C4 Tech/Performance

1996, 2005, 96, code, codes, corvette, dtc, icm, lt4, p0300, part, po300, troubleshoot

1996 LT4 code P0300

bgrant_12002 on Sep 7, 2009

Mar 29, 2013 11:31 AM
by bgrant_12002

7

2,756

C4 Tech/Performance

1992, 1993, 93, c4, changed, corvette, engine, fire, forums, icm, info, lt1, start, turns, wont

1993 LT1 wont start

Captian Caveman on Sep 5, 2011

Jan 4, 2013 12:49 AM
by FrankieD

18

13,570

C4 Tech/Performance

LTCC help

Jonnymac on Jun 20, 2012

Jun 20, 2012 09:04 PM
by Jonnymac

5

1,245

C4 Tech/Performance

92, corvette, crank, icm, opti, replaced, start

'92 won't start...

darKness2 on May 13, 2012

May 13, 2012 11:14 PM
by Railroadman

2

1,055

C4 General Discussion

coil, corvette, cover, distributor, dui, hei, icm, kit, sale, streetstrip

HEI distributor w/ DUI coil, cap, rotor, ICM. Brand new Gear

Dr.Huxtable on Mar 20, 2012

Apr 2, 2012 09:47 AM
by Dr.Huxtable

14

1,282

C4 Parts for Sale/Wanted

95, circuit, coil, control, corvette, ground, icm, ignition, igniton, lt1, module, open, points, shorted, spark, test

Ignition control circuit

captained230 on Feb 17, 2012

Mar 5, 2012 04:18 PM
by captained230

15

9,474

C4 Tech/Performance

01, 1984, 84, adjust, c4, c5, change, changing, coil, control, corvette, icm, ignition, location, module

Coil Change and Ignition control module...

HeavyMetalHawk on Feb 1, 2012

Feb 1, 2012 12:07 PM
by HeavyMetalHawk

2

1,440

C3 Tech/Performance

2012, chandler, coil, corvette, engine, icm, motorsports, opti, shuts, temp

Engine shutdown, immediate restart at Op Temp

JM95 on Apr 12, 2011

Jan 31, 2012 09:33 AM
by DMarusa

7

1,192

C4 Tech/Performance

1994, 94, c4, check, coil, corvette, corvetteoptispark, icm, opti, optispark, run, spark, starts, stops, vette

1994 C4 Coupe .....Optispark or what?

365021 on Jan 21, 2012

Jan 23, 2012 07:57 PM
by 365021

11

2,549

C4 Tech/Performance

85, 86, aftermarket, budget, coil, corvette, distributor, dui, forum, forums, icm, price, sbc

Aftermarket Distributor?

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1 2)

vetteocaster on Jan 12, 2012

Jan 23, 2012 03:16 PM
by GREGGPENN

21

5,121

C4 Tech/Performance

10483131, 94, compound, control, corvette, gm, heat, icm, ignition, module, sale, transfer

ICM, Ignition Control Module, NIB AC Delco GM # 10483131

pelensky on Dec 2, 2011

Dec 2, 2011 09:10 AM
by pelensky

0

791

C4 Parts for Sale/Wanted

84, bank, c4, cap, corvette, icm, injector, injectors, issue, left, problems, replacement, vette, wire, zr1

88 C4 has injector and ICM problem

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1 2 3)

DMheart on Oct 31, 2011

Nov 30, 2011 11:55 AM
by DMheart

56

8,093

C4 Tech/Performance

42, 84, 94, bad, code, codes, cool, corvette, fix, fixes, icm, lt1, overheating, replaced, runs

ICM and code 42 fix...finally

derekguzz on Nov 12, 2011

Nov 14, 2011 06:10 PM
by derekguzz

14

8,125

C4 Tech/Performance

Replacing ICM

tjbagz on Oct 30, 2011

Oct 31, 2011 08:46 AM
by Muffin

2

2,110

C4 Tech/Performance

42, 94, bad, code, corvette, icm, issues, symptoms

94 vette with code 42

marcwb on Oct 17, 2011

Oct 18, 2011 07:17 PM
by derekguzz

5

1,506

C4 Tech/Performance

1986, 1990, 42, 90, code, codes, corvette, dtc, dtc42, icm, lt1, timing, zr1

DTC 42 means?

97VetteDan on Oct 2, 2011

Oct 3, 2011 09:51 AM
by AGENT 86

4

2,167

C4 Tech/Performance

1984, 1994, 42, burning, code, corvette, h42, icm, replaced, trouble

H42 code still

derekguzz on Sep 9, 2011

Sep 12, 2011 08:38 PM
by derekguzz

14

6,068

C4 Tech/Performance

1996, 92, 94, 96, corvette, die, dies, fires, icm, lt1, lt1startsanddies, runs, stalls, start, starting, starts

1996 lt1 starts and dies

italian1969 on Sep 4, 2011

Sep 6, 2011 11:39 AM
by FLASH92LT1

5

2,960

C4 Tech/Performance

automotive, c4, car, corvette, icm, ignition, needed, pigtail, pigtails, whats, wire

ICM pigtail..webiste needed

derekguzz on Sep 3, 2011

Sep 4, 2011 04:51 PM
by WW7

7

992

C4 General Discussion

1994, 91, 94, burning, c4, corvette, failure, icm, location

ICM - wish I would have read this thread

jsims002 on Aug 31, 2011

Sep 2, 2011 08:45 PM
by jsims002

9

1,499

C4 General Discussion

92, bad, c0rvette, c4, communicate, corvette, diagram, ecm, forumicm, fuel, guru, icm, injectors, keeping, optispark, pulsing, start

could bad icm=no injector pulses

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1 2 3 ... Last Page)

mintc on Jul 22, 2011

Aug 25, 2011 04:01 PM
by mintc

66

16,019

C4 Tech/Performance

1989 Corvette Help

BUDAMMO on Aug 23, 2011

Aug 24, 2011 10:15 AM
by oldalaskaman

8

743

C4 Tech/Performance

Need help w/94 engine wiring harness grounds

Coves4me on Aug 11, 2011

Aug 12, 2011 06:23 PM
by leesvet

9

1,081

C4 Tech/Performance

1992, 92, c4, car, coil, corvette, crank, cranks, driving, icm, ignition, light, security, shuts, start, stay, vats, wont

92 dies / cranks but no start

ricott on Aug 6, 2011

Aug 7, 2011 07:56 PM
by jaa1992

5

3,350

C4 Tech/Performance

93, c4, coil, corvette, heat, hot, icm, ignition, lacation, lt1, module, sink, test

93 ignition module , HOT !!!!!!!!!!!!!

barney10mm on Jul 12, 2011

Jul 15, 2011 12:20 PM
by jaa1992

12

3,212

C4 Tech/Performance

1992, 92, bad, bench, changing, chevrolet, chevy, corvette, easy, fails, good, hot, icm, lt1, replacing, store, test, testing

ICM Test

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1 2)

C4Mark58 on May 23, 2011

Jul 3, 2011 11:04 PM
by ninetyfivevette

22

13,053

C4 Tech/Performance

1992, bad, burning, c4, corvette, failure, frying, head, icm, installing, lt1, mounted, space, symptoms, troubleshooting, washers

ICM failure again!!

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1 2)

93cruiser on Jan 31, 2011

Jul 1, 2011 08:48 PM
by helphos

24

7,619

C4 Tech/Performance

connector, corvette, delteq, icm, problem, problems

Bizarre ICM problem solved after removing Delteq.

ninetyfivevette on May 14, 2011

May 14, 2011 06:20 PM
by ninetyfivevette

0

677

C4 Tech/Performance

1994, 1995, 1996, 96, control, corvette, engines, icm, ignition, interchange, lt1, module, number, part, work

Can 1996 and 1995 ICM interchange?

ninetyfivevette on Apr 22, 2011

Apr 23, 2011 04:12 PM
by ninetyfivevette

5

2,122

C4 Tech/Performance

c4 won't start but cracks really fast

EMBPILOT on Apr 6, 2011

Apr 21, 2011 10:44 AM
by EMBPILOT

18

1,079

C4 Tech/Performance

1989, c4, closed, corvette, fix, gasket, head, icm, loop, lt1, misfire, missfire, repair, startup, warm

Help chasing misfire after 'repair'

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1 2)

tlong on Mar 9, 2011

Apr 7, 2011 05:49 AM
by kenmohr

21

4,212

C4 Tech/Performance

93, corvette, cuts, icm, replacement, shuts, shutting, warmed

My 93 corvette engine shuts off

belluomo on Jan 30, 2011

Jan 30, 2011 09:55 PM
by ChrisLT1conv

4

907

C4 Tech/Performance

Shutting down problem

BigJohnC1 on Jan 23, 2011

Jan 24, 2011 08:28 PM
by BigJohnC1

4

477

C4 General Discussion

96, bad, check, coil, corvette, ecm, failure, housing, icm, loose, lt1, problem, start, testing, vette

LT1 ICM -vs- ECM Failure

skylarkul on Dec 19, 2010

Jan 24, 2011 07:58 PM
by tblt44

12

6,074

C4 Tech/Performance

1992, 1993, 92, 93, aftermarket, control, corvette, corvettes, forum, icm, ignition, module, prices, replacement, symptoms

Ignition Control Module Best Prices - for a 1993

BIGJIM13 on Jan 3, 2011

Jan 4, 2011 03:23 PM
by jaa1992

3

2,630

C4 Tech/Performance

36, 42, 62, chandler, codes, connector, corvette, fuel, icm, lt1, motorsports, opti, ran, sensor, start, temperature, wont

No start after Opti-job Codes 42 & 62

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1 2)

ragni on Dec 18, 2010

Dec 23, 2010 03:39 PM
by ChandlerMotorsports

22

2,751

C4 Tech/Performance

300, accel, bypass, ddahlgrenlmlscom, ice, icm, lt1, night, stock, taconic

Car Died on the Drive Home Last Night on the Taconic PKWY N

(

1 2)

95BLKVette on Nov 20, 2010

Dec 15, 2010 10:44 AM
by sailorsteve

31

1,874

C4 Tech/Performance

1996, 94, 96, corvette, icm, interchange, lt1, pcm, pinout

96 PCM in 94

ppinto1 on Oct 3, 2010

Oct 4, 2010 09:16 PM
by ppinto1

5

2,006

C4 Tech/Performance

1991, 1996, 91, corvette, distributor, engine, failure, icm, jegs, lt1, misfire, misfiring, missfire, multiple, ona, tuneup

1991 misfire, can't figure out

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1 2)

xcracer on Sep 17, 2010

Sep 22, 2010 04:43 PM
by xcracer

32

10,598

C4 Tech/Performance

Icm ?

rob-cyn on Sep 13, 2010

Sep 16, 2010 03:35 PM
by derekguzz

8

878

C4 Tech/Performance

1989, 92, 97, bad, corvette, dielectric, ecm, frying, grand, grease, heatsink, icm, lt1, paste, thermal, trans

ICM keeps frying on me ....help hurrryrry

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1 2)

derekguzz on Jun 15, 2010

Sep 2, 2010 02:11 PM
by onedef92

34

4,211

C4 Tech/Performance

coil, coils, corvette, cover, head, icm, ideas, impalla, ls1, lt1, mount, mounted, mounting, straight, valve

Mounting LS1 Coils to LT1 - brainstorming

jmgtp on Aug 25, 2010

Aug 29, 2010 10:23 AM
by jmgtp

11

6,147

C4 General Discussion

1993, 1996, 92, 93, c4, corvette, diagram, diagrams, engine, filter, icm, lt1, output, tach, wire, wiring

-92 LT1 Tacho output question

Svante on Aug 24, 2010

Aug 25, 2010 01:13 AM
by Svante

2

1,776

C4 Tech/Performance

1991, 6al, 91, al, cap, coil, distributor, icm, intermitent, intermittent, intermittently, msd, problem, short, small, spark

Intermittent short no spark issue

twin540 on Aug 15, 2010

Aug 18, 2010 09:22 PM
by twin540

10

1,336

C4 Tech/Performance

1500, 2000rpm, 93, american, coil, full, icm, low, lt1, made, misfiring, miss, rpm, stutter, throttle

LT1 Reoccuring Misfire

jmgtp on Aug 2, 2010

Aug 2, 2010 01:02 PM
by FireRoc

3

5,613

C4 Tech/Performance

1989, 89, bridge, car, corvette, fuel, hot, icm, impedance, injector, problem, stalls, start, starting, vette, warm

89 vette wont start when warm

rbachtold on Jun 28, 2010

Jul 14, 2010 06:45 PM
by rbachtold

12

8,580

C4 Tech/Performance

1992, 1994, car, corvette, icm, location, part

Red-Lt1 on Jul 12, 2010

Jul 13, 2010 06:07 AM
by Red-Lt1

6

790

C4 Tech/Performance

1990, 1992, 1994, c4, corvette, ecm, erratic, fouls, heatsink, hot, icm, lt1, opti, plugs, rpm

Time for a new opti?

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1 2 3)

Yellow92LT1 on Apr 5, 2010

Jul 13, 2010 04:05 AM
by DaZ06

45

3,505

C4 General Discussion

bad, c4, cold, control, corvette, icm, idle, ignition, load, lt1, misfire, misfires, misfiring, missfiring, module, skip

LT1 Misfiring - again

jmgtp on Jun 18, 2010

Jun 23, 2010 09:56 PM
by chileverde

9

8,129

C4 Tech/Performance

Need ideas on 92 that dies when hot

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1 2)

jaa1992 on May 24, 2010

Jun 13, 2010 08:30 PM
by surfer93

23

1,164

C4 Tech/Performance

1968, bad, c4, car, chevy, code, codes, corvette, died, dies, gm, highway, icm, p1371, spit, sputters

Vette Died on the Highway Please Help!

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1 2)

1Harley 1Vette on Dec 9, 2009

Jun 12, 2010 11:05 PM
by Frizlefrak

35

3,767

C4 General Discussion

96, bracket, code, coil, dielectric, f150, failing, grease, heat, icm, lt1, paste, po1351, put, sink, thermal

Spacing Ign Coil off of head.

Weav's Vet on Jun 8, 2010

Jun 9, 2010 11:37 PM
by 69427

14

1,748

C4 Tech/Performance

1994, 93, c5, check, checking, coil, corvette, icm, ign, ignition, module, napa, test, tester, testing, voltimeter

How to test an ignition coil ... help

Kinkajou on May 25, 2010

May 25, 2010 07:42 PM
by JackDidley

3

5,723

C4 Tech/Performance

Opti question

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1 2)

Red-Lt1 on May 4, 2010

May 24, 2010 01:06 PM
by maranello_man

32

1,819

C4 Tech/Performance

92 to 95 Opti complete "but"

C4vettrn on Apr 10, 2010

Apr 11, 2010 11:13 PM
by C4vettrn

5

636

C4 Tech/Performance

1984, 1993, 92, 93, back, bad, bring, ccm, code, corvette, diagnosis, ecm, flash, icm, loose, lt1, mileage, original, problem, prom, signs

Bad ECM?

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1 2)

vetteguy216 on Apr 5, 2010

Apr 11, 2010 08:50 AM
by LannyL81

24

5,713

C4 Tech/Performance

16181333, 1994, 1995, 94, c4, ccm, corvette, ecm, icm, pcm, remanufactured, sale, sells, units

1994-1995 ECM Unit - 16181333

swampoodle-pat on Feb 15, 2010

Feb 22, 2010 02:54 PM
by swampoodle-pat

2

1,889

C4 Parts for Sale/Wanted

1994, 41, c41, chevy, clean, code, codes, corvette, diagnostic, h41, icm, trouble

1994 Corvette H41 code

Y-ME on Feb 17, 2010

Feb 18, 2010 09:24 AM
by Y-ME

2

3,770

C4 Tech/Performance

1994, 64, 94, c5, code, codes, connecter, corvette, doesnt, error, flash, gauges, grease, h64, heat, icm, lt1, sink, start

new parts still no start

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1 2)

derekguzz on Feb 2, 2010

Feb 6, 2010 07:58 PM
by derekguzz

28

3,142

C4 Tech/Performance

Threads Tagged with icm