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HT4100 4.1, 4.5, 4.9
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OBD I codes for 4.x Engines
DaveSmed
Sep 20, 2004
Locked
0
98K
Sep 20, 2004
by
DaveSmed
V
Oil filter assembly - HT4100 engine
Versusprod
Mar 4, 2024
4
149
Mar 8, 2024
by
Versusprod
V
Seals for HT4100 oil filter adapter assembly
Versusprod
Mar 7, 2024
0
66
Mar 7, 2024
by
Versusprod
C
4.1 Issues with 85 Eldorado -- Can you help?
caddymark
Oct 10, 2009
9
2K
Mar 6, 2024
by
Tripwire
D
Oil leak in filter area - 85 Eldorado 4.1
domer94
Jul 8, 2015
9
3K
Mar 3, 2024
by
Versusprod
A
Want your ISC problems solved? Look here...
awadecki
Jul 18, 2006
2
35
3K
Feb 27, 2024
by
pjlucky
D
Boosting HT4100 Performance
DrDave
Feb 21, 2005
2
33
40K
Feb 21, 2024
by
MattBoman
H
Where is the oil pressure switch located - 84 Deville HT4100
henrydean40
Aug 6, 2011
7
10K
Feb 19, 2024
by
Versusprod
B
What are all the differences in the Allante engines?
BallisticPossum
Jan 4, 2024
0
150
Jan 4, 2024
by
BallisticPossum
S
Oil filter adapter gaskets and oil cooler lines needed
Steve1957
Jun 30, 2023
1
1K
Dec 26, 2023
by
henryk2112
T
Is 104C too hot for a 4.9L 1994 Deville?
Twilightcall
Jun 5, 2005
2
3
53
12K
Nov 12, 2023
by
Submariner409
1985 4.1 AC sounds Part 2. Scroll to last entry.
Uga812
May 9, 2022
10
1K
Oct 14, 2023
by
Uga812
C
Swapping 4100 for 307. Any advice?
CirKleK
Oct 22, 2003
17
8K
Sep 13, 2023
by
DKHopkins62
G
Intake manifold upgrade 4.5L/4.9L
Gwillyville Kid
Sep 11, 2023
0
223
Sep 11, 2023
by
Gwillyville Kid
1982-1989 Fleetwood blower control module
Gustavo Matus
Aug 28, 2023
Redirect
–
–
N/A
D
1991 Deville oil pan gasket replacement
Dtorres
Aug 25, 2023
4
385
Aug 25, 2023
by
nstar
R
Reman 4100 Question
red80coupe
Aug 20, 2023
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R
HT 4100 HELP!
red80coupe
Aug 14, 2023
1
499
Aug 20, 2023
by
red80coupe
M
Rough running 4.9
Moms95DeVille4.9
Aug 4, 2011
2
29
18K
Aug 14, 2023
by
shotym61.bw
Hard start after warm-up
georgeholloway1967
Jul 25, 2023
0
180
Jul 25, 2023
by
georgeholloway1967
Water pump inlet 93 Deville 4.9
prontoman
Jul 18, 2023
1
635
Jul 19, 2023
by
Submariner409
P
4.5 Reliability
plooker
Sep 5, 2009
16
18K
Jul 12, 2023
by
MRDANGERUS
N
Turbocharge the 4.9L?
N0DIH
Sep 9, 2004
2
40
19K
Jul 3, 2023
by
MRDANGERUS
B
4.9 1995 Deville low oil pressure at idle
Beking32
Jun 25, 2023
0
402
Jun 25, 2023
by
Beking32
8
4.5 distributor removal
8eldorado8
Apr 4, 2011
10
11K
Jun 24, 2023
by
lksue52
1984 Coupe Deville ht4100 Alternator question
Lane769
Jun 19, 2023
2
1K
Jun 20, 2023
by
smokuspollutus
1
Okay to put R134 in R12 system?
1989Eldo
Jun 20, 2023
3
525
Jun 20, 2023
by
1989Eldo
1985 Eldorado 4100 oil pump drive gear issue ?
sasha.fatsy
Jun 11, 2023
3
790
Jun 19, 2023
by
sasha.fatsy
Crank hub pulling
smokuspollutus
Dec 19, 2021
6
2K
Jun 15, 2023
by
smokuspollutus
4.9 PCV grommet
joelc
Mar 3, 2022
2
2K
Jun 10, 2023
by
BuddTheFox
Distributor rebuild questions
BuddTheFox
Nov 2, 2022
7
1K
Jun 6, 2023
by
BuddTheFox
R
Ht4100 belt replacements and help with the vacuum pump
RobertBansley
May 2, 2023
2
1K
May 7, 2023
by
RobertBansley
1
Getting hot at idle
1989Eldo
Apr 15, 2023
3
702
May 7, 2023
by
rsingl
D
1985 Eldorado FWD - 4100ht engine replacement ?
Daddy with white caddy
Feb 13, 2023
5
1K
Feb 20, 2023
by
smokuspollutus
A
4100 to 307 swap (ITS ALIVE!)
amazingamazing
Aug 1, 2010
2
3K
Feb 19, 2023
by
karyanbrown
A
Swapping HT4100 (4.1L V8) Fleetwood Brougham with a 5.7L V8
Aleks O.
Aug 25, 2019
5
5K
Jan 25, 2023
by
kennethfjoe
1
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HT4100 4.1, 4.5, 4.9
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