: HT4100 4.1, 4.5, 4.9



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  1. Oil-leak solved!
  2. WOW this is a 4.9
  3. PO48 Current/ EGR Fault
  4. Oil Pressure
  5. E98 code on 4.5
  6. ...the HG gremlin got me
  7. Help identify 4.9 engine noise (video included)
  8. Head Gasket 91 caddy
  9. Once again......no joy
  10. BCM Location?
  11. Oil-tube gasket & o-ring
  12. 84 cdv 4100
  13. Question on oil leak - 1989 Seville
  14. No Joy....
  15. RTV on Oil-Pan gasket
  16. Block number?
  17. One problem fixed another shows up. Starter
  18. 4.9 Software
  19. How do I bypass PASKEY
  20. Rough running, bad mileage, unstable idle
  21. Trouble Starting When Warm
  22. Clattering noise from engine front area
  23. What is this hose called???
  24. 83 Eldorado 4.1 auto OD Trans Model # Please
  25. 1986 deville 4.1L
  26. Sedan Deville 4.1 to 4.5 Disaster Swap “This time I got right” part 2
  27. 89 Seville ignition switch click - VATS?
  28. Which a/c compressor to buy for round 4...advice please
  29. Carnut, got it to work, Thanks !
  30. wont start when warm
  31. B336 code, 86 seville
  32. transmission parts and specks
  33. Transmission advice
  34. 4.5-4.9 less inclined for h.g. problems
  35. Transmission Cooler Lines
  36. Severs Idle Problem
  37. 83 Eldo 4.1 Hesitation upon accelleration
  38. Coolant Change and GM Sealant Questions
  39. 95 DeVille PCM Codes
  40. Cleaning an ISC motor from a 1989 Seville
  41. Water in oil - Head/intake maniforld gasket job
  42. Loud bang, car won't turn over. 4100 '82 Deville
  43. Coolant Leak
  44. A/C Compressor Clutch Engagement Issues
  45. 83 Eldo 4.1 Climate Control only lights sometimes
  46. 1989 Deville code help
  47. 1989 Deville code help
  48. 83 4.1 overheated, now, an ISC problem !
  49. car doesn't switch to 3rd gear
  50. Performance 4.9
  51. New Life
  52. 92 Deville 4.9 FPR
  53. plug wire routing conduit/loom
  54. Alternator Pulley
  55. 88 Sedan Deville 4.5L intermittently starts, sometimes dies driving
  56. gear indicator fault :(
  57. 4100 Fuel Problem - Advice Please...
  58. A/C Bypass Belt for 4.5L w/Calif Emissions
  59. i need advice from a tech!!!!!!
  60. HELP! 4.9 Missing and Dist. cap clicking!
  61. 85 eldo 4.1
  62. ht 4100 crankshaft flange 9Harmonic balancer) removal tool?
  63. Mystery drainage of radiator?
  64. Finally replacing 4.9 main bearings
  65. 4.9l stumble
  66. my 4.1 compression numbers
  67. A/C Bypass belt length for 4.9
  68. engine stopped while driving on highway, inside temp not right
  69. The worst gas miliage ever
  70. 86 Seville, 4.1, low idle in drive
  71. electrical diagram needed ASAP
  72. 4.5 questions
  73. 4.5 Miss under full throttle
  74. Reverse slipping?
  75. ignition!!!!!!!!
  76. 4.9 liter--replacing heater core "hoses".
  77. 1982 Deville check engine light
  78. Cruise Control Problem!!
  79. anyone know tps ranges
  80. stripped head bolt please help!!!!!
  81. 1992 Deville fails NOx emissions test
  82. Question Regarding '85 Eldo TPS Fix???
  83. Water Pump Inlet Repair help
  84. I'm afraid to buy these cars ....
  85. Another question - 89 Seville air conditioning leak
  86. 1989 Seville code E13 Oxygen sensor not ready
  87. 1987 - 1989 Fan Control Module
  88. 85 Seville HT4100
  89. How common is this?
  90. deville 4.5 and gm taps
  91. question engine deville 4.5
  92. 4.9 Unstable Idle
  93. torque converter portability
  94. 4.5 High Rev
  95. Oil Feed Pipe o-ring
  96. side gaped spark plugs on a 4.x
  97. 1994 Cadillac Deville,4.9L
  98. 4.9 reverse flow cooling
  99. 4.9L '93 Seville: How do I replace the pickup coil?
  100. All oil gaskets/seals on engine RH side
  101. 4.5 comparied to a 4.9
  102. Th-th-th-that's all folks!
  103. HT 4100 4.1 motor problems - giving up
  104. Power Steering Pum Removal on 4.9
  105. car took a dump today
  106. sings of a head gasket falure in a 4.5
  107. 4.5L engine runs rough
  108. Fuel Injection Cleaning?
  109. Fan Belt Upside Down on Ebay Car?
  110. 92 Cadillac Eldo AC Leak near the fire wall
  111. 4.9l Rpm
  112. 4.9 RWD 5 speed
  113. Can anyone interpert this A/C gauge reading??
  114. clamp-down dist caps
  115. In need of some numbers....
  116. Throttle body spacers on a 4.? engine
  117. HT4100 SES light @ low RPM, much stalling & near stalling
  118. 1992 4.9 injector replacement
  119. Need wiring diagrams.
  120. A/C refrig. temp. sensor question?
  121. Cannot getg into E.6.3 ISC Motor
  122. Sedan Deville 4.1 to 4.5 Disaster Swap “This time I’ll get right”
  123. Pain at the pump and the inspectors
  124. Your advice on the HT 4100 needed/appreciated
  125. 4.9L coolant leak
  126. high output alternator
  127. Have to pump gas pedal to get it to start, then it runs fine??
  128. 4.1 Spark Plug Wires Problem Solved (Maybe)
  129. Weak Battery + Hot Engine - Bad Alternator?
  130. Plug Gap on 4.9L??? (also Bosch Injector Question)
  131. where are the major grounding straps?
  132. I Have Codes... Can anyone interpret?
  133. "illumina" and other Gurus
  134. Fuel Type?
  135. 91 Deville Distributor Coil wiring diagram
  136. Head gasket maybe but hope not!
  137. 4.9 has irratic idle can you help
  138. '86 DeVille rear main seal
  139. where is this supposed to connect
  140. last problem with HT4100 (I hope)
  141. 92 Deville, accelerated on it's own. Friend kinda fixed it but now..
  142. 1991 Seville 4.9L Engine Stumble (TECH PLEASE)
  143. New throttle position sensor?
  144. New Transmission Fluid and Filter
  145. engine pinging off the line?
  146. radiator 1983 Eldorado refurb?
  147. 4.9 ticking when cold
  148. Stop Engine - Oil Light on 1988 4.5L V8
  149. 93 Started, now can't keep belt on
  150. engine pinging???
  151. no chime? cant' open gas lid?
  152. think these are the same parts?
  153. 4.5 Computer Tachometer
  154. Air cleaner cold start door
  155. The Surge - in my 4.9, not Iraq...
  156. 4.9 switched to 87 oct., hard starts, re-time?
  157. 92 deville sound at engine starts and stops
  158. 93 SD 4.9 Gurgling back into the overflow tank
  159. When you buy a remain. ecm, does it come already flashed?
  160. 93 Won't Start
  161. 93 Seville 4.9-Crank position sensor location?
  162. '93 Eldorado - Relays - ELC System
  163. Got new plugs/wires installed on 4.9 today.
  164. 93 deville "CHUNKing" while reved in park or nuetral.
  165. cost of tps
  166. latest 4.1 repairs
  167. 91 Caddy DeVille Sedan Belt
  168. 82 deville tranny problems
  169. 4.1 Question
  170. 1984 Fleetwood 4.1
  171. Trouble codes?
  172. I need a new throttle body
  173. 4.9 timing chain replacement ?
  174. Popular car... at the junkyard
  175. 4.9 swap
  176. Code E26 and E27
  177. 4100? worth rebuilding
  178. Need help finding power steering bracket
  179. 4.1 dampener pulley bolt
  180. ht4100- stop engine-oil pressure light flickers
  181. "The Cadillac 4.1 liter engine is beyond hope for this formula"
  182. 94 Deville won't start
  183. '94 Deville 4.9l torque conv. clutch prob?
  184. 1986 Eldorado stalls under stress
  185. 4.9's torque
  186. Right the wrongs in a 4.1 (4100)
  187. 4.9 engine
  188. 4.9 liter vanity cover removal.
  189. The Mythical 4.9 performance Chip
  190. 4.5 Liter - Last chance before I need to give it up.
  191. Possible ECM problem
  192. Got mother's 1985 Fleetwood Brougham with HT4100
  193. Member 92 Seville 89 - Old Threads
  194. Water Pump Tasks ahead
  195. wont start cold
  196. egr question
  197. Problem of the day :)
  198. 2002 DTS trouble
  199. 250 or 252?
  200. 4.9 isc adjustment: Thanks Ranger
  201. 4.5 engine swap
  202. Hall Effect
  203. How do you get to the back of the FDC
  204. 4100 RWD replacement source
  205. mechanical water temp guage
  206. deck height and bore spacing
  207. 88 4.5L Running rough
  208. 90 eldo-possible tranny issue and engine issue
  209. Exhaust Muffler
  210. 4.9 litre--flat tappet engine?
  211. 4.1 to 4.5
  212. New to Throttle Body Injection?
  213. Haynes or Chiltons
  214. 4100 Updated intake gasket set
  215. '93 Eldorado, 4.9L - Partial Fire, No Start
  216. How do you clean 4.5 throttle body?
  217. oil change
  218. Crazy Coolant Temperatures
  219. Mustard like substance in radiator
  220. Help my 91 cadilliac deville 4.9
  221. Two Problems Not Starting and Stalling
  222. 4.9 water pump
  223. Broken Upper Radiator Hose Connector
  224. 1994 Sedan Deville questions...
  225. Piston 6 hits sparkplug - Bad timing
  226. Coupe Deville 4.5 Rough Running
  227. new and need some help please!!!!!
  228. What should I do, buy or walk? 89 Coupe Deville
  229. E20 - Open Fuel Pump Circut Feedback Signal
  230. 4.1 Running Bad Again
  231. 4.5 Allante Intake on a 4.9 Eldorado
  232. heat issues!!!!
  233. Need Help ASAP!!!!!!
  234. Lound thump when shutting off engine, then no restart
  235. 4.9 Oil Filter ??
  236. 4.9 and spark knock
  237. I really need help, please!
  238. will my 4.9 fit?
  239. I'm going to try the 4.1->4.9 conversion
  240. 1986 cadillac Stalling up hills, need help ASAP
  241. Case of the Evil Tranny
  242. Question when torquing headbolts 4.9L
  243. Synthetic oil no no in 4100
  244. New brain wracking symptom...
  245. For those of you with coolant loss issues.
  246. '93 Eldorado, 4.9L - Bad Fuel Pump?
  247. 4.1 Spun a cam bearing,
  248. C bieng displayed
  249. Is this engine rebuildable?
  250. Flowmaster Exhaust for a 4.9 Deville