: HT4100 4.1, 4.5, 4.9



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  1. Cleaning an ISC motor from a 1989 Seville
  2. Water in oil - Head/intake maniforld gasket job
  3. Loud bang, car won't turn over. 4100 '82 Deville
  4. Coolant Leak
  5. A/C Compressor Clutch Engagement Issues
  6. 83 Eldo 4.1 Climate Control only lights sometimes
  7. 1989 Deville code help
  8. 1989 Deville code help
  9. 83 4.1 overheated, now, an ISC problem !
  10. car doesn't switch to 3rd gear
  11. Performance 4.9
  12. New Life
  13. 92 Deville 4.9 FPR
  14. plug wire routing conduit/loom
  15. Alternator Pulley
  16. 88 Sedan Deville 4.5L intermittently starts, sometimes dies driving
  17. gear indicator fault :(
  18. 4100 Fuel Problem - Advice Please...
  19. A/C Bypass Belt for 4.5L w/Calif Emissions
  20. i need advice from a tech!!!!!!
  21. HELP! 4.9 Missing and Dist. cap clicking!
  22. 85 eldo 4.1
  23. ht 4100 crankshaft flange 9Harmonic balancer) removal tool?
  24. Mystery drainage of radiator?
  25. Finally replacing 4.9 main bearings
  26. 4.9l stumble
  27. my 4.1 compression numbers
  28. A/C Bypass belt length for 4.9
  29. engine stopped while driving on highway, inside temp not right
  30. The worst gas miliage ever
  31. 86 Seville, 4.1, low idle in drive
  32. electrical diagram needed ASAP
  33. 4.5 questions
  34. 4.5 Miss under full throttle
  35. Reverse slipping?
  36. ignition!!!!!!!!
  37. 4.9 liter--replacing heater core "hoses".
  38. 1982 Deville check engine light
  39. Cruise Control Problem!!
  40. anyone know tps ranges
  41. stripped head bolt please help!!!!!
  42. 1992 Deville fails NOx emissions test
  43. Question Regarding '85 Eldo TPS Fix???
  44. Water Pump Inlet Repair help
  45. I'm afraid to buy these cars ....
  46. Another question - 89 Seville air conditioning leak
  47. 1989 Seville code E13 Oxygen sensor not ready
  48. 1987 - 1989 Fan Control Module
  49. 85 Seville HT4100
  50. How common is this?
  51. deville 4.5 and gm taps
  52. question engine deville 4.5
  53. 4.9 Unstable Idle
  54. torque converter portability
  55. 4.5 High Rev
  56. Oil Feed Pipe o-ring
  57. side gaped spark plugs on a 4.x
  58. 1994 Cadillac Deville,4.9L
  59. 4.9 reverse flow cooling
  60. 4.9L '93 Seville: How do I replace the pickup coil?
  61. All oil gaskets/seals on engine RH side
  62. 4.5 comparied to a 4.9
  63. Th-th-th-that's all folks!
  64. HT 4100 4.1 motor problems - giving up
  65. Power Steering Pum Removal on 4.9
  66. car took a dump today
  67. sings of a head gasket falure in a 4.5
  68. 4.5L engine runs rough
  69. Fuel Injection Cleaning?
  70. Fan Belt Upside Down on Ebay Car?
  71. 92 Cadillac Eldo AC Leak near the fire wall
  72. 4.9l Rpm
  73. 4.9 RWD 5 speed
  74. Can anyone interpert this A/C gauge reading??
  75. clamp-down dist caps
  76. In need of some numbers....
  77. Throttle body spacers on a 4.? engine
  78. HT4100 SES light @ low RPM, much stalling & near stalling
  79. 1992 4.9 injector replacement
  80. Need wiring diagrams.
  81. A/C refrig. temp. sensor question?
  82. Cannot getg into E.6.3 ISC Motor
  83. Sedan Deville 4.1 to 4.5 Disaster Swap “This time I’ll get right”
  84. Pain at the pump and the inspectors
  85. Your advice on the HT 4100 needed/appreciated
  86. 4.9L coolant leak
  87. high output alternator
  88. Have to pump gas pedal to get it to start, then it runs fine??
  89. 4.1 Spark Plug Wires Problem Solved (Maybe)
  90. Weak Battery + Hot Engine - Bad Alternator?
  91. Plug Gap on 4.9L??? (also Bosch Injector Question)
  92. where are the major grounding straps?
  93. I Have Codes... Can anyone interpret?
  94. "illumina" and other Gurus
  95. Fuel Type?
  96. 91 Deville Distributor Coil wiring diagram
  97. Head gasket maybe but hope not!
  98. 4.9 has irratic idle can you help
  99. '86 DeVille rear main seal
  100. where is this supposed to connect
  101. last problem with HT4100 (I hope)
  102. 92 Deville, accelerated on it's own. Friend kinda fixed it but now..
  103. 1991 Seville 4.9L Engine Stumble (TECH PLEASE)
  104. New throttle position sensor?
  105. New Transmission Fluid and Filter
  106. engine pinging off the line?
  107. radiator 1983 Eldorado refurb?
  108. 4.9 ticking when cold
  109. Stop Engine - Oil Light on 1988 4.5L V8
  110. 93 Started, now can't keep belt on
  111. engine pinging???
  112. no chime? cant' open gas lid?
  113. think these are the same parts?
  114. 4.5 Computer Tachometer
  115. Air cleaner cold start door
  116. The Surge - in my 4.9, not Iraq...
  117. 4.9 switched to 87 oct., hard starts, re-time?
  118. 92 deville sound at engine starts and stops
  119. 93 SD 4.9 Gurgling back into the overflow tank
  120. When you buy a remain. ecm, does it come already flashed?
  121. 93 Won't Start
  122. 93 Seville 4.9-Crank position sensor location?
  123. '93 Eldorado - Relays - ELC System
  124. Got new plugs/wires installed on 4.9 today.
  125. 93 deville "CHUNKing" while reved in park or nuetral.
  126. cost of tps
  127. latest 4.1 repairs
  128. 91 Caddy DeVille Sedan Belt
  129. 82 deville tranny problems
  130. 4.1 Question
  131. 1984 Fleetwood 4.1
  132. Trouble codes?
  133. I need a new throttle body
  134. 4.9 timing chain replacement ?
  135. Popular car... at the junkyard
  136. 4.9 swap
  137. Code E26 and E27
  138. 4100? worth rebuilding
  139. Need help finding power steering bracket
  140. 4.1 dampener pulley bolt
  141. ht4100- stop engine-oil pressure light flickers
  142. "The Cadillac 4.1 liter engine is beyond hope for this formula"
  143. 94 Deville won't start
  144. '94 Deville 4.9l torque conv. clutch prob?
  145. 1986 Eldorado stalls under stress
  146. 4.9's torque
  147. Right the wrongs in a 4.1 (4100)
  148. 4.9 engine
  149. 4.9 liter vanity cover removal.
  150. The Mythical 4.9 performance Chip
  151. 4.5 Liter - Last chance before I need to give it up.
  152. Possible ECM problem
  153. Got mother's 1985 Fleetwood Brougham with HT4100
  154. Member 92 Seville 89 - Old Threads
  155. Water Pump Tasks ahead
  156. wont start cold
  157. egr question
  158. Problem of the day :)
  159. 2002 DTS trouble
  160. 250 or 252?
  161. 4.9 isc adjustment: Thanks Ranger
  162. 4.5 engine swap
  163. Hall Effect
  164. How do you get to the back of the FDC
  165. 4100 RWD replacement source
  166. mechanical water temp guage
  167. deck height and bore spacing
  168. 88 4.5L Running rough
  169. 90 eldo-possible tranny issue and engine issue
  170. Exhaust Muffler
  171. 4.9 litre--flat tappet engine?
  172. 4.1 to 4.5
  173. New to Throttle Body Injection?
  174. Haynes or Chiltons
  175. 4100 Updated intake gasket set
  176. '93 Eldorado, 4.9L - Partial Fire, No Start
  177. How do you clean 4.5 throttle body?
  178. oil change
  179. Crazy Coolant Temperatures
  180. Mustard like substance in radiator
  181. Help my 91 cadilliac deville 4.9
  182. Two Problems Not Starting and Stalling
  183. 4.9 water pump
  184. Broken Upper Radiator Hose Connector
  185. 1994 Sedan Deville questions...
  186. Piston 6 hits sparkplug - Bad timing
  187. Coupe Deville 4.5 Rough Running
  188. new and need some help please!!!!!
  189. What should I do, buy or walk? 89 Coupe Deville
  190. E20 - Open Fuel Pump Circut Feedback Signal
  191. 4.1 Running Bad Again
  192. 4.5 Allante Intake on a 4.9 Eldorado
  193. heat issues!!!!
  194. Need Help ASAP!!!!!!
  195. Lound thump when shutting off engine, then no restart
  196. 4.9 Oil Filter ??
  197. 4.9 and spark knock
  198. I really need help, please!
  199. will my 4.9 fit?
  200. I'm going to try the 4.1->4.9 conversion
  201. 1986 cadillac Stalling up hills, need help ASAP
  202. Case of the Evil Tranny
  203. Question when torquing headbolts 4.9L
  204. Synthetic oil no no in 4100
  205. New brain wracking symptom...
  206. For those of you with coolant loss issues.
  207. '93 Eldorado, 4.9L - Bad Fuel Pump?
  208. 4.1 Spun a cam bearing,
  209. C bieng displayed
  210. Is this engine rebuildable?
  211. Flowmaster Exhaust for a 4.9 Deville
  212. A/C Compressor Belt Bypass - 89 Deville 4.5
  213. all 4100's interchangable?
  214. car surges badly when stopping
  215. Blown Head gasket
  216. RPO Code of the 90 4.5L V8?
  217. 4.9 stalls
  218. Choke?
  219. New Member Introduction
  220. Allante HT4100
  221. 4100 Book
  222. replacement fuel injectors
  223. how hard is it to drop the oil pan
  224. HT4100 Recommended Oil Viscosity
  225. Tuning for E10 gasoline
  226. 4.9l oil leak
  227. Poor gas mileage/Sensors, please help a bit!
  228. HT4100 PCV valve, location?
  229. Can fuel injector effect the map sensor and how it function
  230. Losing coolant when the heat is turned on.
  231. 4.9L 1995 deville car ran out of gas but wont start
  232. VIDEO of HT4100 WOT
  233. Radiator Drain Plug
  234. 86-87 Seville, Eldorado 4.9L Swap
  235. Water Pump on an '85 fleetwood
  236. engine id
  237. 4.9 firing order???
  238. Won't start when hot (intermittent)
  239. 92 Deville losing power after turning a corner
  240. 76 Eldo 500 FI Problems
  241. swap 4.1 to a 4.5 or 4.9 in 85 Seville?
  242. swap 4.1 to a 4.5 or 49 in 85 Seville?
  243. More HT4100 Tips
  244. engine knock in my 1994 sedan deville 4.9L
  245. Well, i raced 3 cars in one night with my 4.1
  246. No start, at operating temp, Flooding on restart
  247. Help Ecm/PCM Questions
  248. New Addition to the Family--85 Sedan Deville
  249. Code Analyzer
  250. slight hesitation at cold low-gear