: HT4100 4.1, 4.5, 4.9



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  1. 4.9L performance upgrades?
  2. 4.1 to 4.5 swap
  3. How much for New Head Gaskets?
  4. new mat and coolent sensors
  5. rough idle and sputtering
  6. 4.1 exhaust manifold
  7. 4.9 Head Gasket
  8. problem with "service engine soon"
  9. Advance timing on 4.9
  10. What MPG for 87 Eldorado, 4.1?
  11. E048 EGR fault code how to fix?
  12. 4.9 And The Gas Mileage Sucks!!!
  13. Any way to disable the ses light?
  14. 95 deville tranny question
  15. 92' dies then restarts by its self
  16. ECM pinouts
  17. Dead 89 deville engine
  18. Going to be a long weekend
  19. A few questions for the Caddy Experts 4.9L
  20. old radiator cap problematic?
  21. 4.9 ltr
  22. 4.9 reliability :P
  23. Help With Code
  24. confused
  25. 4.9 Ltr Timing Belt?
  26. Drive ADL switch?
  27. spark plug question
  28. code ro15
  29. 92 Fleetwood 4.9 hesitation/code help
  30. 4.5 no start, no life. sorta familiar
  31. Yea another code ??
  32. 4.1 Operating Temperatures
  33. coolant leak
  34. A few questions regarding the 4.9
  35. code questions please...
  36. Throttle body bolt stripped out of intake manifold
  37. steering wheel will lock up and car cut off
  38. Help with 89 Sedan deVille codes...
  39. how good are the bottom ends on the 4.9?
  40. E98 code - help!!??
  41. 4.9L northstar
  42. Need help ... engine kicks, accelerates/revs itself
  43. '89 DeVille a/c not working
  44. HT4100 Stalling
  45. 4.9 oil consumption
  46. ht 4100 change over to 350 chevy
  47. Will 4.9 heads fit on a 4.1 block?
  48. Thinking about getting a new coil
  49. 87 Cadillac Seville ,4.1 with blown head gasket
  50. Hi. I need lots of help concerning the 4.9L. Thanks.
  51. timing a 4.5
  52. pulley bearing? serpentine belt not moving
  53. Hub on crankshaft
  54. Tackling Motor mount Replacement-92 Seville(4.9)
  55. 1. Diag Codes 2. Engine Stall
  56. squeek squeek .my speedo cable i think
  57. coolant in oil in my new motor
  58. coolant in oil
  59. Reconnecting Spark Plug Wires - 4.9L
  60. rough poor idle on 91 Seville STS 4.9 ideas?
  61. bbob???
  62. Better MPG with 87 Octane
  63. Preliminary tune-up
  64. car from hell
  65. 1988 Coupe Deville 4.5 ECM problem
  66. Please Help!!!
  67. Well, it cranked but...
  68. 4.9 heads on a 4.5
  69. 1990 fleetwood 4.5 fuel filter and thermostat location????
  70. 4.1 V6 and 4.1 V8
  71. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  72. 93 SDV trans question
  73. can anyone shine some light on me
  74. What's wrong with my 4100?
  75. What are some tricks to make the 4100 last a long time?
  76. hurt caddy
  77. torque specs for belt tensioner pulley
  78. Need trouble codes for '83 HT-4100 Eldo
  79. 93 loud knocking within engine, while in park
  80. ht4100
  81. I bought my muffler
  82. Valve belts?
  83. gas leak
  84. Just got 3 codes, need some help!
  85. Needing help with a few things....
  86. How can I reset codes on '83 Eldo
  87. 4.9 motor buildup pics...
  88. oil light flickers at idle
  89. 83 coupe deville 4100???
  90. 1987 Fleetwood problems, maybe you guys know or been through it?
  91. how do i...
  92. Cracked Manifold
  93. Bad mpg and very throaty problem
  94. Weird ~ I like the 87 4100 growl
  95. How to check codes for A/C unit?
  96. 3 fan fault message in my 88 seville help?
  97. Fuel injector service
  98. starting
  99. flywheel to torque converter bolts
  100. Harmonic balancer 83 Fwd In-Line 4.1
  101. 4100 with 92K
  102. Newbie needs tranny and code help
  103. Deville still will not start...
  104. knocking solved
  105. Almost ready to pull the ht4100
  106. no fuel
  107. Safety Safety Safety !
  108. A Little Different No Start Problem
  109. 95 Deville Wont Start...Boo
  110. 4.9 being weird help!!!
  111. A/C help?????
  112. E67 error, any ideas?
  113. Water in door!
  114. Air Conditioning
  115. A/C Question for '92 STS
  116. ITS DONE....I finally have a smooth QUIET Cadillac
  117. ht4100 mounting to engine stand bolt size?
  118. '94 4.9 won't start!
  119. 1988 Alante will not run
  120. Swap Question 4100 (electronics)
  121. Let me tell you, water pump replacement is a pain in the @$$.
  122. 4T60E slipping
  123. Proper Engine Break In Reman 4.1
  124. Cadillac Coral?
  125. 4.1 Biarritz hesitation and stalling - long with lots of info!
  126. Marked surge at light throttle
  127. 4.1 Saddened
  128. 95 deville 4.9 miss at idle
  129. newbie
  130. Repeated O2 Sensor Problem 91 4.9l
  131. Bars Golden Seal Powder Stop Leak And Other Stuff (Deals?)
  132. Need second opinion 4.1 swap to northstar
  133. gonna replace the 4100 on 83 cadillac deville would it be possible to put a chevy 350
  134. Is my 4.9 on the way out?
  135. Installing Reman Ht 4.1 Oil And Coolant Suggestions
  136. What should I do if I put too much bars leak in?
  137. E-030 + Poor Mileage + Bouncing High Idle At Startup
  138. Transmission Looseing fluid , 1 qt per minute
  139. OMG..Maybe it is the water pump. THIS IS ANNOYING.
  140. can the 4.5 handle and 50-75 shot of nitrous
  141. tps................. help!
  142. Took off the belt and its not the waterpump making noise..need help
  143. EGR Malfunction -- Please Help
  144. Waterpump Replacement
  145. Muffler pictures
  146. Throttle position sensor question
  147. advancing the timing question
  148. Vibrating noise around throttle body
  149. 4.9 spark knock
  150. Muffler
  151. Changed coolant without pellets; what to do??
  152. injectors
  153. 94 sedan deville serpentine belt
  154. How hard to replace radiator out of 92 Deville?
  155. Crack in exhaust manifold
  156. Help Plz
  157. Re:Eldo 403FI swap w/MEGASQUIRT ?
  158. Turns out I have a bad water pump.
  159. replacing 4.1 with chevy 5.0
  160. 4.9 leaking oil?
  161. gaskets, paint, parts cleaner
  162. ht 4100 4.1 swap to a 4.9
  163. Questions About Eldorado Country site/info ---403FI swap
  164. 87 DeVille 36k ori. miles
  165. Codes are back!
  166. HP gains from no cat?
  167. 91 deville oxygen sensor(s) location
  168. 1988 deville fuel pump harness question
  169. 1990 SDV tranny- Please help
  170. 88 eldo Special fuel line tool?
  171. Car make caveman brain hurt
  172. Need help with front main bearing!
  173. Surging/cutting out? 1991 Deville 4.9
  174. Gasket to Oil line connector in Radiator.
  175. OH-NO!! The dreaded 4.1 "knocking".
  176. Bbob - Don't flush trans
  177. 94 deville , distrib will be turned the wrong way soon
  178. 93 Caddy seville 4.9
  179. Octane booster/ fuel saver
  180. Rough running (4.1) and ditrib question
  181. engine almost plucked
  182. Replacing Water Pump Too Often
  183. Like illumina said "or that pesky gm module"
  184. to chip or not to chip???
  185. Rebuilding my '88 THM440-T4 ie 4t60
  186. exhaust sound when it rains
  187. Slight Problem, need help
  188. Timming a '85 RWD 4.1...
  189. My mechanic recommended not using bars leak sealant?
  190. quiet, thoaty exhaust
  191. Do you have to set timing after change distributor and cap?
  192. procharger supercharger?
  193. Oil Adapter Hose Fittings
  194. Car won't start; noticed no spark at plug
  195. 90devilleguy, a question about your Muffler!
  196. smog pump replacement 4.5
  197. 83 Eldo Touring 4.1 Engine HELP
  198. 4.9L seville stall/restart problem
  199. Hot starting idling
  200. 4.9 family no hot start issue fix
  201. New to Forum seeking Info in 83 Eldo 4.1 swap and trans
  202. 1990 Cadillac Fleetwood 4.5 FWD
  203. Car cuts Off
  204. another issue (gas guzzler)
  205. part II to my car starting mystery
  206. Trouble codes
  207. car cut off and didn't start until the next day
  208. 1988 Cad SDV motor mounts
  209. 92 STS Engine Stall at low speed...HELP !
  210. Hey aguthmiller I have a few questions
  211. Water in the Oil ... How can it get there?
  212. Will new distributor cap and rotor make car run better?
  213. 94 Deville 4.9 Part Throttle Ping
  214. 92 4.9L Engine Reassembly - my heads are off and engine is in car.
  215. water in oil - Broke down on trip in Coffee Springs Alabama
  216. stuttering problem at idle
  217. 4.5 for 4.1 swap
  218. Got myself an 82 Coupe Deville, having some probs..
  219. 90 sedan deville right blinker acting up
  220. Will top end cleaning be good or bad for an engine with 130K on it??
  221. ALDL location
  222. Best swap for 4.1?
  223. What should I expect for my 0-60
  224. Fuel Pump circuit problem 84 Brougham
  225. 1984 Sedan DeVille over 200,000 miles?
  226. 90 Seville, Code E041
  227. **TH440 - 4.5 FWD - Trans **
  228. 89 4.5 deville overheated
  229. Flowmaster Muffler Installation Pics
  230. 4T60E Leak , ENOUGH IS ENOUGH !!
  231. 90 deville 4.5 125k doggin on freeway
  232. Aftermarket for 4.9?
  233. 4.1 Driveability Problem
  234. Code 44 on '85 Fleetwood Brougham
  235. What's Wrong with My Cadillac?
  236. 4.1/4.5 pros and cons?
  237. Oil leak from under car!
  238. Still having 4.9 idle down problems
  239. 4.9 Vs Northstar
  240. 4.9 emergency..broke something
  241. How hard is it to change the distributor cap and rotor on the 4.9??
  242. HT 4100 Diagnostic Codes
  243. 1989 Eldo help
  244. 4.1 engine timing!! Help...
  245. Engine Swap thoughts!
  246. '85 Fleetwood Brougham 4100
  247. AC won't blow!!!!
  248. Best Oil For HT 4100
  249. how do i enter set timing mode
  250. how to disable traction control on 92 deville?