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Engine Discussions
HT4100 4.1, 4.5, 4.9
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120
C
HT4100 PCV valve, location?
caddeville
Dec 7, 2007
11
2K
Dec 10, 2007
by
ehall
M
4.9L idle issues... no power.. etc.. TPS?
MitchMeister-
Aug 1, 2007
3
2K
Dec 8, 2007
by
wikked_magick45
B
Radiator Drain Plug
behind-bars
Dec 5, 2007
4
4K
Dec 8, 2007
by
behind-bars
Water
majax
Mar 10, 2005
1
1K
Dec 8, 2007
by
RoadQueen
S
engine id
ssdavis70
Dec 4, 2007
2
860
Dec 8, 2007
by
Brizzal
C
swap 4.1 to a 4.5 or 4.9 in 85 Seville?
cadmat
Dec 2, 2007
6
2K
Dec 8, 2007
by
Po Pimp
J
4100 Newbie needs help!
Jeff595
Nov 14, 2007
5
1K
Dec 8, 2007
by
wikked_magick45
M
Losing coolant when the heat is turned on.
medicz28
Dec 6, 2007
10
11K
Dec 7, 2007
by
HUF
Q
Can fuel injector effect the map sensor and how it function
Quote
Dec 7, 2007
0
2K
Dec 7, 2007
by
Quote
D
Water Pump on an '85 fleetwood
daedalus__
Dec 5, 2007
2
968
Dec 7, 2007
by
awadecki
Q
4.9L 1995 deville car ran out of gas but wont start
Quote
Dec 5, 2007
4
2K
Dec 6, 2007
by
Quote
H
86-87 Seville, Eldorado 4.9L Swap
ht4100
Dec 5, 2007
0
1K
Dec 5, 2007
by
ht4100
T
Won't start when hot (intermittent)
tco43
Dec 3, 2007
6
2K
Dec 4, 2007
by
NickySantoro
B
4.9 firing order???
Boosted32v
Dec 4, 2007
3
3K
Dec 4, 2007
by
Boosted32v
HT4100 chosen as one of the worst engines of all time
ehall
Nov 27, 2007
13
6K
Dec 4, 2007
by
ht4100
A
New Addition to the Family--85 Sedan Deville
awadecki
Nov 28, 2007
6
1K
Dec 4, 2007
by
ht4100
Z
No start, at operating temp, Flooding on restart
Zipfast
Nov 30, 2007
7
1K
Dec 4, 2007
by
Zipfast
C
Code Analyzer
Chicano-Mexicano
Nov 27, 2007
3
1K
Dec 3, 2007
by
ehall
J
92 Deville losing power after turning a corner
jstoddard
Dec 3, 2007
5
2K
Dec 3, 2007
by
jstoddard
C
Well, i raced 3 cars in one night with my 4.1
caddeville
Dec 1, 2007
Locked
10
1K
Dec 2, 2007
by
caddeville
C
swap 4.1 to a 4.5 or 49 in 85 Seville?
cadmat
Dec 2, 2007
0
965
Dec 2, 2007
by
cadmat
F
Help Ecm/PCM Questions
frizz3333
Nov 28, 2007
6
1K
Nov 29, 2007
by
ewill3rd
S
How long will it last?
SlxAlxx
Oct 30, 2007
15
10K
Nov 29, 2007
by
awadecki
G
Valves too far in advance or too far retarded?
Guest
Nov 27, 2007
1
914
Nov 29, 2007
by
cadillac_al
Z
Water pumps...Generally speaking.
zentrade
Oct 22, 2007
11
2K
Nov 26, 2007
by
lenny lincoln
K
'93 Eldorado 4.9L - P012 & P053 Codes
kdcing
Nov 24, 2007
3
4K
Nov 26, 2007
by
HUF
which O2 sensor for 85 DeVille/HT4100
ehall
Nov 22, 2007
2
2K
Nov 25, 2007
by
awadecki
3
Cam sensor 4.9
386 DeVille
Nov 14, 2007
8
3K
Nov 25, 2007
by
Tony_Hanna
T
Code e048 what's the trigger?
Tony_Hanna
Nov 23, 2007
2
2K
Nov 24, 2007
by
Tony_Hanna
Turbo Muffler on a 4.9
General_Motors_Fan
Jun 27, 2007
10
5K
Nov 24, 2007
by
Tony_Hanna
R
Urgent Help W/engine
r23k4u
Nov 23, 2007
1
659
Nov 23, 2007
by
ehall
3
4.9 Code 41 Saga Continues!!!
386 DeVille
Nov 21, 2007
3
2K
Nov 23, 2007
by
NickySantoro
D
83 fleetwood 4100
dahound
Nov 21, 2007
1
780
Nov 23, 2007
by
carnut
J
Huge Problem HELP !!!
Jim/Kat52
Nov 16, 2007
5
1K
Nov 18, 2007
by
NickySantoro
flickering Service Soon and no codes...
ehall
Sep 23, 2007
6
942
Nov 17, 2007
by
NickySantoro
1
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HT4100 4.1, 4.5, 4.9
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