: HT4100 4.1, 4.5, 4.9



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  1. Pushrod?
  2. Got new codes today.
  3. 90 Deville Dies while driving
  4. 84 4.1 Swap To 305/350 ?
  5. new to the forum, need a little help (90 4.5l pfi)
  6. Air Pump Seized (4.1 engine)
  7. OBD I codes for 4.x Engines
  8. junked 4.1 installed chevy 5.0 runs great
  9. I replaced my tps and isc but it stall every now an then
  10. Engine running rough
  11. 85 cadillac seville
  12. '93 4.9L Spark Plugs and Wires
  13. TCC location, please Help!!
  14. White smoke still coming from exhaust?
  15. Starter Disabled "Anti-Theft"
  16. need source for 99 cadillac service manuals
  17. HT4100 coolant issue.
  18. 92 (4.9L) stalling
  19. Cars starting to run a little better!
  20. Oil Overfill Cause Engine Damage?
  21. 4T60E Trans Sport Mode???
  22. can't advance computer beyond PCM?
  23. Turbocharge the 4.9L?
  24. Transmission Wont Shift
  25. discontinued?
  26. Replaced Injectors.. Still no action in Cyls 3 and 4?
  27. Edelbrock engine....
  28. Rough Idle
  29. A/c
  30. Speedometer problems......
  31. 1985 Seville HELP NEEDED
  32. Weird A/C air condition problem
  33. Size of O-rings in fuel line
  34. Fuel Filter Location.
  35. 94 Deville Boils Over after Engine Off
  36. Dexcool in a 4.9L???
  37. 1992 4.9 goes to open loop at HWY speeds.
  38. Bad Engines?
  39. fuel pump location (84 4100)
  40. car wont start (84 4100)
  41. Overhauling and Modifying a 1982 HT4100
  42. 92 deville bad head gasket selling?
  43. 92 deville please help
  44. New 4.9 problem, horrific idle, backfiring
  45. Oil Cooler...
  46. 83 eldorado with new reman engine and tranny timing / ping probs
  47. 4.1 to 4.7
  48. Car giving me fits
  49. 89 Seville idles at 2200
  50. help with codes
  51. 4.5 cranks but no start
  52. 4.9L Stalling out
  53. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  54. Pistons for a 4.5L and 4.9L the same???
  55. 4.9 distributor help
  56. umm...help please!
  57. 84 coupe deville codes
  58. engine swap
  59. 1990 deville starter replacement
  60. TPS Enhancer
  61. What kind of spark plugs for the HT4100?
  62. Vehicle Data List, Can you spot the problem?
  63. changing belt
  64. 92 Deville - OIL IN COOLANT
  65. 94' sedan deville woes Heeellllllp.
  66. What are the troubleshooting steps for injectors/plugs/wires?
  67. 4.9 Engine Oil Cooler Line replacement
  68. INTERMITTANT "Missing" and rough running/idle
  69. Ppplllleeeeaaassseee Help!!!
  70. ok so maybe its the alternator
  71. engine coolant supplement
  72. Ford SVO Injectors, Can i use them?
  73. '85 Deville Engine Temp Fan Light
  74. If I disconnect the battery.....
  75. 4.9L distributor questions
  76. How to go into different parts of OBD?
  77. gas smell?
  78. 92 Deville Surging during idle!
  79. symptoms of a bad cat?
  80. ebay purchase question?
  81. Flowmaster 80 Series-I LOVE IT!
  82. Over Heating
  83. high throttle on start. Code 26
  84. Fram Air Hog-Test
  85. 4.9L Roller Rockers?
  86. '86 Fleetwood 75 FWD
  87. TPS Adjustment for 85 4.1 (RWD)
  88. where is the thing???!!!!!!????
  89. radiator removal and installation
  90. 92 deville "set timing mode"????
  91. Ahh!!!
  92. What to do to make car stop running rich?
  93. 92 deville clicking after shut off???
  94. Spark Knock, Continued....
  95. Throttle Body and Air CLeaner Housing
  96. Engine Dies...
  97. Quick PCV question
  98. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  99. bogging 4.9 in a Fiero
  100. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  101. Overheat Problem
  102. '89 DeVille, ISP motor bounces
  103. How to tell if water pump is going out?
  104. Overheating Badly
  105. MAT Sensor location...
  106. Serpentine belt for 4.9 ('91 Deville)?
  107. sputtering
  108. Radiator leak
  109. 15 Amp ERLS blowing
  110. 94 deville fuel delivery prob. HELP!
  111. wtf
  112. loud tapping noise in the left bank sounds like from top end
  113. swap engine
  114. eric
  115. replacing a broke pulley
  116. Jrb
  117. 87 eldorado 4.1L in an 84 fiero - SES light ON
  118. so many codes!
  119. 91 Deville 4.9 with no power- Need Help
  120. 0.07 volts for ground???
  121. 87 Eldorado 4.1L
  122. type of oil
  123. ISC motor idle speed
  124. how do i remove the throttle body?
  125. got my 4.1 reman in but it wont fire up
  126. High RPM on Motor Start - 4.9
  127. 4.5 V8 Water in Oil
  128. 88 4.5 V8 Water In Oil
  129. Aftermarket 4100 Parts?
  130. coolant leak from timing cover?
  131. Hammer -vs- Fussy Starter
  132. bad thermostats, hopefully?
  133. 4.1 TPS sensor
  134. Strange engine/ecu problem
  135. Best motor oil for 4.9?
  136. 4.5 Coolant Problems, Leaking Fluid - but from where?
  137. simple 4.9 questions
  138. 4.9L Firing order + Cylinder location HERE!
  139. 4.1 Rough Idle
  140. Best (Worst) Air Filters to Use
  141. 4.9L performance upgrades?
  142. 4.1 to 4.5 swap
  143. How much for New Head Gaskets?
  144. new mat and coolent sensors
  145. rough idle and sputtering
  146. 4.1 exhaust manifold
  147. 4.9 Head Gasket
  148. problem with "service engine soon"
  149. Advance timing on 4.9
  150. What MPG for 87 Eldorado, 4.1?
  151. E048 EGR fault code how to fix?
  152. 4.9 And The Gas Mileage Sucks!!!
  153. Any way to disable the ses light?
  154. 95 deville tranny question
  155. 92' dies then restarts by its self
  156. ECM pinouts
  157. Dead 89 deville engine
  158. Going to be a long weekend
  159. A few questions for the Caddy Experts 4.9L
  160. old radiator cap problematic?
  161. 4.9 ltr
  162. 4.9 reliability :P
  163. Help With Code
  164. confused
  165. 4.9 Ltr Timing Belt?
  166. Drive ADL switch?
  167. spark plug question
  168. code ro15
  169. 92 Fleetwood 4.9 hesitation/code help
  170. 4.5 no start, no life. sorta familiar
  171. Yea another code ??
  172. 4.1 Operating Temperatures
  173. coolant leak
  174. A few questions regarding the 4.9
  175. code questions please...
  176. Throttle body bolt stripped out of intake manifold
  177. steering wheel will lock up and car cut off
  178. Help with 89 Sedan deVille codes...
  179. how good are the bottom ends on the 4.9?
  180. E98 code - help!!??
  181. 4.9L northstar
  182. Need help ... engine kicks, accelerates/revs itself
  183. '89 DeVille a/c not working
  184. HT4100 Stalling
  185. 4.9 oil consumption
  186. ht 4100 change over to 350 chevy
  187. Will 4.9 heads fit on a 4.1 block?
  188. Thinking about getting a new coil
  189. 87 Cadillac Seville ,4.1 with blown head gasket
  190. Hi. I need lots of help concerning the 4.9L. Thanks.
  191. timing a 4.5
  192. pulley bearing? serpentine belt not moving
  193. Hub on crankshaft
  194. Tackling Motor mount Replacement-92 Seville(4.9)
  195. 1. Diag Codes 2. Engine Stall
  196. squeek squeek .my speedo cable i think
  197. coolant in oil in my new motor
  198. coolant in oil
  199. Reconnecting Spark Plug Wires - 4.9L
  200. rough poor idle on 91 Seville STS 4.9 ideas?
  201. bbob???
  202. Better MPG with 87 Octane
  203. Preliminary tune-up
  204. car from hell
  205. 1988 Coupe Deville 4.5 ECM problem
  206. Please Help!!!
  207. Well, it cranked but...
  208. 4.9 heads on a 4.5
  209. 1990 fleetwood 4.5 fuel filter and thermostat location????
  210. 4.1 V6 and 4.1 V8
  211. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  212. 93 SDV trans question
  213. can anyone shine some light on me
  214. What's wrong with my 4100?
  215. What are some tricks to make the 4100 last a long time?
  216. hurt caddy
  217. torque specs for belt tensioner pulley
  218. Need trouble codes for '83 HT-4100 Eldo
  219. 93 loud knocking within engine, while in park
  220. ht4100
  221. I bought my muffler
  222. Valve belts?
  223. gas leak
  224. Just got 3 codes, need some help!
  225. Needing help with a few things....
  226. How can I reset codes on '83 Eldo
  227. 4.9 motor buildup pics...
  228. oil light flickers at idle
  229. 83 coupe deville 4100???
  230. 1987 Fleetwood problems, maybe you guys know or been through it?
  231. how do i...
  232. Cracked Manifold
  233. Bad mpg and very throaty problem
  234. Weird ~ I like the 87 4100 growl
  235. How to check codes for A/C unit?
  236. 3 fan fault message in my 88 seville help?
  237. Fuel injector service
  238. starting
  239. flywheel to torque converter bolts
  240. Harmonic balancer 83 Fwd In-Line 4.1
  241. 4100 with 92K
  242. Newbie needs tranny and code help
  243. Deville still will not start...
  244. knocking solved
  245. Almost ready to pull the ht4100
  246. no fuel
  247. Safety Safety Safety !
  248. A Little Different No Start Problem
  249. 95 Deville Wont Start...Boo
  250. 4.9 being weird help!!!