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C4 HVAC, Fuel, Emissions, and Exhaust Forum

For discussion of issues related to C4 Corvette Air Conditioning/Heater/Radiator, Fuel, Emission Control, and Exhaust Systems

196Topics
Page 1 of 8
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Forum ListNew TopicSearch
Page of 8
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AC Vacuum issue

by Ontway • 8/7/25 5:53pm
Latest: 8/8/25 11:08am by Ontway
1225
Views
2
Replies

my 1990 runs above 230 degrees

by BillyDee • 8/20/12 9:35pm
Latest: 7/29/25 8:53am by Dennis L Brooks
32084
Views
35
Replies

Air only comming out of the windshild defrostor

by rugdoz • 7/30/12 10:08am
Latest: 5/4/25 6:51pm by KA5CDJ
15425
Views
6
Replies

A/C Compressor Clutch Won't Engage

by chevykid • 2/25/25 2:30pm
Latest: 2/26/25 4:34pm by chevykid
1763
Views
2
Replies

How many have had cracked radiators-Should we just replace to be safe?

by TripleBlackBeauty • 8/20/24 12:30pm
Latest: 8/21/24 10:27am by Phat98
895
Views
3
Replies

Cold start problem

by Bob Rowan • 8/1/24 4:17pm
Latest: 8/2/24 6:20pm by
1624
Views
5
Replies

Unknown bracket location

by C4Maverick • 3/16/24 6:23pm
Latest: 3/17/24 9:31am by Bob DeCardenas
1047
Views
2
Replies

Crossfire flooding.

by KiwiVette • 10/11/23 8:11pm
Latest: 10/18/23 3:40pm by katanaman
1625
Views
1
Replies

FIC injectors

by Guy-C4 • 7/31/23 2:30pm
Latest: 7/31/23 4:01pm by Guy-C4
1355
Views
2
Replies

Project wrapped up

by katanaman • 3/25/23 4:50pm
Latest: 3/25/23 9:36pm by
1260
Views
1
Replies

Continuing through the EGR issues

by katanaman • 3/20/23 5:09pm
Latest: 3/20/23 9:07pm by
1114
Views
1
Replies

That was noisy...

by katanaman • 3/18/23 1:55pm
Latest: 3/19/23 12:13pm by
1419
Views
1
Replies

EGR 2

by katanaman • 3/8/23 10:52pm
Latest: 3/9/23 9:58pm by katanaman
988
Views
1
Replies

Cleaning that EGR

by katanaman • 3/8/23 2:30pm
Latest: 3/8/23 7:58pm by
1560
Views
1
Replies

No heat in my '95

by RitaJean • 1/10/23 7:21pm
Latest: 1/11/23 8:57am by Superc63
2129
Views
3
Replies

Swapping Crossfire for Carburetor

by firstvette84 • 11/2/22 8:49am
Latest: 12/2/22 10:54am by Our-83
5199
Views
9
Replies

Blower motor runs on High constantly

by elvis628 • 9/6/22 1:46pm
Latest: 10/24/22 9:13am by
1851
Views
6
Replies

Excessively high idle

by firstvette84 • 8/22/22 6:06am
Latest: 8/24/22 8:57am by TLAVAC
2690
Views
5
Replies

96 blend door actuator

by 96 fred owen • 3/25/22 6:50am
Latest: 3/29/22 6:58am by 96 fred owen
3038
Views
9
Replies

Heater blows cold

by AFammo • 1/14/22 2:47am
Latest: 3/8/22 1:06pm by lkedmiston
3416
Views
6
Replies

1990 L98 Cooling issue.

by BobPurz • 9/29/21 4:37am
Latest: 10/9/21 8:08pm by VetteTonic
4507
Views
7
Replies

1991-1996 Radiator/Condenser Guard, AC and FansTroubleshooting

by Superc63 • 5/4/21 3:53am
Latest: 5/13/21 7:30am by Black Shark
1887
Views
4
Replies

VIDEO: 1990-1993 Blend Door Actuator and Heater Core Removal

by Superc63 • 4/2/21 12:17pm
Latest: 5/4/21 4:14am by Superc63
8090
Views
3
Replies

1990 C4 Z51 6sp - 3 Row Radiator

by grantar2 • 4/7/21 2:21pm
Latest: 4/21/21 9:50am by DanC4-90
2049
Views
3
Replies

Gas gauge

by manchestershark • 8/6/20 7:40am
Latest: 9/2/20 5:36pm by 396c4
2445
Views
3
Replies
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