: HT4100 4.1, 4.5, 4.9



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  1. What MPG for 87 Eldorado, 4.1?
  2. E048 EGR fault code how to fix?
  3. 4.9 And The Gas Mileage Sucks!!!
  4. Any way to disable the ses light?
  5. 95 deville tranny question
  6. 92' dies then restarts by its self
  7. ECM pinouts
  8. Dead 89 deville engine
  9. Going to be a long weekend
  10. A few questions for the Caddy Experts 4.9L
  11. old radiator cap problematic?
  12. 4.9 ltr
  13. 4.9 reliability :P
  14. Help With Code
  15. confused
  16. 4.9 Ltr Timing Belt?
  17. Drive ADL switch?
  18. spark plug question
  19. code ro15
  20. 92 Fleetwood 4.9 hesitation/code help
  21. 4.5 no start, no life. sorta familiar
  22. Yea another code ??
  23. 4.1 Operating Temperatures
  24. coolant leak
  25. A few questions regarding the 4.9
  26. code questions please...
  27. Throttle body bolt stripped out of intake manifold
  28. steering wheel will lock up and car cut off
  29. Help with 89 Sedan deVille codes...
  30. how good are the bottom ends on the 4.9?
  31. E98 code - help!!??
  32. 4.9L northstar
  33. Need help ... engine kicks, accelerates/revs itself
  34. '89 DeVille a/c not working
  35. HT4100 Stalling
  36. 4.9 oil consumption
  37. ht 4100 change over to 350 chevy
  38. Will 4.9 heads fit on a 4.1 block?
  39. Thinking about getting a new coil
  40. 87 Cadillac Seville ,4.1 with blown head gasket
  41. Hi. I need lots of help concerning the 4.9L. Thanks.
  42. timing a 4.5
  43. pulley bearing? serpentine belt not moving
  44. Hub on crankshaft
  45. Tackling Motor mount Replacement-92 Seville(4.9)
  46. 1. Diag Codes 2. Engine Stall
  47. squeek squeek .my speedo cable i think
  48. coolant in oil in my new motor
  49. coolant in oil
  50. Reconnecting Spark Plug Wires - 4.9L
  51. rough poor idle on 91 Seville STS 4.9 ideas?
  52. bbob???
  53. Better MPG with 87 Octane
  54. Preliminary tune-up
  55. car from hell
  56. 1988 Coupe Deville 4.5 ECM problem
  57. Please Help!!!
  58. Well, it cranked but...
  59. 4.9 heads on a 4.5
  60. 1990 fleetwood 4.5 fuel filter and thermostat location????
  61. 4.1 V6 and 4.1 V8
  62. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  63. 93 SDV trans question
  64. can anyone shine some light on me
  65. What's wrong with my 4100?
  66. What are some tricks to make the 4100 last a long time?
  67. hurt caddy
  68. torque specs for belt tensioner pulley
  69. Need trouble codes for '83 HT-4100 Eldo
  70. 93 loud knocking within engine, while in park
  71. ht4100
  72. I bought my muffler
  73. Valve belts?
  74. gas leak
  75. Just got 3 codes, need some help!
  76. Needing help with a few things....
  77. How can I reset codes on '83 Eldo
  78. 4.9 motor buildup pics...
  79. oil light flickers at idle
  80. 83 coupe deville 4100???
  81. 1987 Fleetwood problems, maybe you guys know or been through it?
  82. how do i...
  83. Cracked Manifold
  84. Bad mpg and very throaty problem
  85. Weird ~ I like the 87 4100 growl
  86. How to check codes for A/C unit?
  87. 3 fan fault message in my 88 seville help?
  88. Fuel injector service
  89. starting
  90. flywheel to torque converter bolts
  91. Harmonic balancer 83 Fwd In-Line 4.1
  92. 4100 with 92K
  93. Newbie needs tranny and code help
  94. Deville still will not start...
  95. knocking solved
  96. Almost ready to pull the ht4100
  97. no fuel
  98. Safety Safety Safety !
  99. A Little Different No Start Problem
  100. 95 Deville Wont Start...Boo
  101. 4.9 being weird help!!!
  102. A/C help?????
  103. E67 error, any ideas?
  104. Water in door!
  105. Air Conditioning
  106. A/C Question for '92 STS
  107. ITS DONE....I finally have a smooth QUIET Cadillac
  108. ht4100 mounting to engine stand bolt size?
  109. '94 4.9 won't start!
  110. 1988 Alante will not run
  111. Swap Question 4100 (electronics)
  112. Let me tell you, water pump replacement is a pain in the @$$.
  113. 4T60E slipping
  114. Proper Engine Break In Reman 4.1
  115. Cadillac Coral?
  116. 4.1 Biarritz hesitation and stalling - long with lots of info!
  117. Marked surge at light throttle
  118. 4.1 Saddened
  119. 95 deville 4.9 miss at idle
  120. newbie
  121. Repeated O2 Sensor Problem 91 4.9l
  122. Bars Golden Seal Powder Stop Leak And Other Stuff (Deals?)
  123. Need second opinion 4.1 swap to northstar
  124. gonna replace the 4100 on 83 cadillac deville would it be possible to put a chevy 350
  125. Is my 4.9 on the way out?
  126. Installing Reman Ht 4.1 Oil And Coolant Suggestions
  127. What should I do if I put too much bars leak in?
  128. E-030 + Poor Mileage + Bouncing High Idle At Startup
  129. Transmission Looseing fluid , 1 qt per minute
  130. OMG..Maybe it is the water pump. THIS IS ANNOYING.
  131. can the 4.5 handle and 50-75 shot of nitrous
  132. tps................. help!
  133. Took off the belt and its not the waterpump making noise..need help
  134. EGR Malfunction -- Please Help
  135. Waterpump Replacement
  136. Muffler pictures
  137. Throttle position sensor question
  138. advancing the timing question
  139. Vibrating noise around throttle body
  140. 4.9 spark knock
  141. Muffler
  142. Changed coolant without pellets; what to do??
  143. injectors
  144. 94 sedan deville serpentine belt
  145. How hard to replace radiator out of 92 Deville?
  146. Crack in exhaust manifold
  147. Help Plz
  148. Re:Eldo 403FI swap w/MEGASQUIRT ?
  149. Turns out I have a bad water pump.
  150. replacing 4.1 with chevy 5.0
  151. 4.9 leaking oil?
  152. gaskets, paint, parts cleaner
  153. ht 4100 4.1 swap to a 4.9
  154. Questions About Eldorado Country site/info ---403FI swap
  155. 87 DeVille 36k ori. miles
  156. Codes are back!
  157. HP gains from no cat?
  158. 91 deville oxygen sensor(s) location
  159. 1988 deville fuel pump harness question
  160. 1990 SDV tranny- Please help
  161. 88 eldo Special fuel line tool?
  162. Car make caveman brain hurt
  163. Need help with front main bearing!
  164. Surging/cutting out? 1991 Deville 4.9
  165. Gasket to Oil line connector in Radiator.
  166. OH-NO!! The dreaded 4.1 "knocking".
  167. Bbob - Don't flush trans
  168. 94 deville , distrib will be turned the wrong way soon
  169. 93 Caddy seville 4.9
  170. Octane booster/ fuel saver
  171. Rough running (4.1) and ditrib question
  172. engine almost plucked
  173. Replacing Water Pump Too Often
  174. Like illumina said "or that pesky gm module"
  175. to chip or not to chip???
  176. Rebuilding my '88 THM440-T4 ie 4t60
  177. exhaust sound when it rains
  178. Slight Problem, need help
  179. Timming a '85 RWD 4.1...
  180. My mechanic recommended not using bars leak sealant?
  181. quiet, thoaty exhaust
  182. Do you have to set timing after change distributor and cap?
  183. procharger supercharger?
  184. Oil Adapter Hose Fittings
  185. Car won't start; noticed no spark at plug
  186. 90devilleguy, a question about your Muffler!
  187. smog pump replacement 4.5
  188. 83 Eldo Touring 4.1 Engine HELP
  189. 4.9L seville stall/restart problem
  190. Hot starting idling
  191. 4.9 family no hot start issue fix
  192. New to Forum seeking Info in 83 Eldo 4.1 swap and trans
  193. 1990 Cadillac Fleetwood 4.5 FWD
  194. Car cuts Off
  195. another issue (gas guzzler)
  196. part II to my car starting mystery
  197. Trouble codes
  198. car cut off and didn't start until the next day
  199. 1988 Cad SDV motor mounts
  200. 92 STS Engine Stall at low speed...HELP !
  201. Hey aguthmiller I have a few questions
  202. Water in the Oil ... How can it get there?
  203. Will new distributor cap and rotor make car run better?
  204. 94 Deville 4.9 Part Throttle Ping
  205. 92 4.9L Engine Reassembly - my heads are off and engine is in car.
  206. water in oil - Broke down on trip in Coffee Springs Alabama
  207. stuttering problem at idle
  208. 4.5 for 4.1 swap
  209. Got myself an 82 Coupe Deville, having some probs..
  210. 90 sedan deville right blinker acting up
  211. Will top end cleaning be good or bad for an engine with 130K on it??
  212. ALDL location
  213. Best swap for 4.1?
  214. What should I expect for my 0-60
  215. Fuel Pump circuit problem 84 Brougham
  216. 1984 Sedan DeVille over 200,000 miles?
  217. 90 Seville, Code E041
  218. **TH440 - 4.5 FWD - Trans **
  219. 89 4.5 deville overheated
  220. Flowmaster Muffler Installation Pics
  221. 4T60E Leak , ENOUGH IS ENOUGH !!
  222. 90 deville 4.5 125k doggin on freeway
  223. Aftermarket for 4.9?
  224. 4.1 Driveability Problem
  225. Code 44 on '85 Fleetwood Brougham
  226. What's Wrong with My Cadillac?
  227. 4.1/4.5 pros and cons?
  228. Oil leak from under car!
  229. Still having 4.9 idle down problems
  230. 4.9 Vs Northstar
  231. 4.9 emergency..broke something
  232. How hard is it to change the distributor cap and rotor on the 4.9??
  233. HT 4100 Diagnostic Codes
  234. 1989 Eldo help
  235. 4.1 engine timing!! Help...
  236. Engine Swap thoughts!
  237. '85 Fleetwood Brougham 4100
  238. AC won't blow!!!!
  239. Best Oil For HT 4100
  240. how do i enter set timing mode
  241. how to disable traction control on 92 deville?
  242. Muscle car pancake air filter
  243. 4T60 Transaxle or 4T60E what's the diff.
  244. How do I clean the throttle body?
  245. help...change oil soon light on
  246. HT 4100 Engine is it that bad
  247. Tune Ups
  248. Is it hard to find the4 pin plug on tranny?
  249. Woe Is Me!
  250. exhaust venting in cabin