: HT4100 4.1, 4.5, 4.9



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  1. Hose substution
  2. Thermostat
  3. Which of these?
  4. New Performance 4.9 Injector Mod. and Adjustable Fuel Pressure Regulator
  5. 1994 Cadillac Deville High Idle
  6. 91 deville, dead miss
  7. heater controls 92 eldo.
  8. How many tablets or bars leak?
  9. Distributor Help
  10. Proper Spark Plug Gap for 4.5
  11. 1990 Deville 4.5 help
  12. Yes, I Did It
  13. Harmonic Balance
  14. ECM Swap! PASSkey Question...
  15. Accel Performance Ignition Module: Real or B/S?
  16. 4100 engine temperature
  17. '90 4.5 No Cam Sensor Reference Signal Journey Through Hell!
  18. Ongoing Issues, running rough poor idle
  19. Trans cooler flush
  20. screw the whole thing - i hate the 4100... swap ideas?
  21. oil sender location - 4.1
  22. code po23??? Any thoughts
  23. 4.9 exhaust info
  24. Throttle valve cable '85
  25. oil pressure light came on - towed home
  26. clackin noise 4.9 deville
  27. Oil-leak solved!
  28. WOW this is a 4.9
  29. PO48 Current/ EGR Fault
  30. Oil Pressure
  31. E98 code on 4.5
  32. ...the HG gremlin got me
  33. Help identify 4.9 engine noise (video included)
  34. Head Gasket 91 caddy
  35. Once again......no joy
  36. BCM Location?
  37. Oil-tube gasket & o-ring
  38. 84 cdv 4100
  39. Question on oil leak - 1989 Seville
  40. No Joy....
  41. RTV on Oil-Pan gasket
  42. Block number?
  43. One problem fixed another shows up. Starter
  44. 4.9 Software
  45. How do I bypass PASKEY
  46. Rough running, bad mileage, unstable idle
  47. Trouble Starting When Warm
  48. Clattering noise from engine front area
  49. What is this hose called???
  50. 83 Eldorado 4.1 auto OD Trans Model # Please
  51. 1986 deville 4.1L
  52. Sedan Deville 4.1 to 4.5 Disaster Swap “This time I got right” part 2
  53. 89 Seville ignition switch click - VATS?
  54. Which a/c compressor to buy for round 4...advice please
  55. Carnut, got it to work, Thanks !
  56. wont start when warm
  57. B336 code, 86 seville
  58. transmission parts and specks
  59. Transmission advice
  60. 4.5-4.9 less inclined for h.g. problems
  61. Transmission Cooler Lines
  62. Severs Idle Problem
  63. 83 Eldo 4.1 Hesitation upon accelleration
  64. Coolant Change and GM Sealant Questions
  65. 95 DeVille PCM Codes
  66. Cleaning an ISC motor from a 1989 Seville
  67. Water in oil - Head/intake maniforld gasket job
  68. Loud bang, car won't turn over. 4100 '82 Deville
  69. Coolant Leak
  70. A/C Compressor Clutch Engagement Issues
  71. 83 Eldo 4.1 Climate Control only lights sometimes
  72. 1989 Deville code help
  73. 1989 Deville code help
  74. 83 4.1 overheated, now, an ISC problem !
  75. car doesn't switch to 3rd gear
  76. Performance 4.9
  77. New Life
  78. 92 Deville 4.9 FPR
  79. plug wire routing conduit/loom
  80. Alternator Pulley
  81. 88 Sedan Deville 4.5L intermittently starts, sometimes dies driving
  82. gear indicator fault :(
  83. 4100 Fuel Problem - Advice Please...
  84. A/C Bypass Belt for 4.5L w/Calif Emissions
  85. i need advice from a tech!!!!!!
  86. HELP! 4.9 Missing and Dist. cap clicking!
  87. 85 eldo 4.1
  88. ht 4100 crankshaft flange 9Harmonic balancer) removal tool?
  89. Mystery drainage of radiator?
  90. Finally replacing 4.9 main bearings
  91. 4.9l stumble
  92. my 4.1 compression numbers
  93. A/C Bypass belt length for 4.9
  94. engine stopped while driving on highway, inside temp not right
  95. The worst gas miliage ever
  96. 86 Seville, 4.1, low idle in drive
  97. electrical diagram needed ASAP
  98. 4.5 questions
  99. 4.5 Miss under full throttle
  100. Reverse slipping?
  101. ignition!!!!!!!!
  102. 4.9 liter--replacing heater core "hoses".
  103. 1982 Deville check engine light
  104. Cruise Control Problem!!
  105. anyone know tps ranges
  106. stripped head bolt please help!!!!!
  107. 1992 Deville fails NOx emissions test
  108. Question Regarding '85 Eldo TPS Fix???
  109. Water Pump Inlet Repair help
  110. I'm afraid to buy these cars ....
  111. Another question - 89 Seville air conditioning leak
  112. 1989 Seville code E13 Oxygen sensor not ready
  113. 1987 - 1989 Fan Control Module
  114. 85 Seville HT4100
  115. How common is this?
  116. deville 4.5 and gm taps
  117. question engine deville 4.5
  118. 4.9 Unstable Idle
  119. torque converter portability
  120. 4.5 High Rev
  121. Oil Feed Pipe o-ring
  122. side gaped spark plugs on a 4.x
  123. 1994 Cadillac Deville,4.9L
  124. 4.9 reverse flow cooling
  125. 4.9L '93 Seville: How do I replace the pickup coil?
  126. All oil gaskets/seals on engine RH side
  127. 4.5 comparied to a 4.9
  128. Th-th-th-that's all folks!
  129. HT 4100 4.1 motor problems - giving up
  130. Power Steering Pum Removal on 4.9
  131. car took a dump today
  132. sings of a head gasket falure in a 4.5
  133. 4.5L engine runs rough
  134. Fuel Injection Cleaning?
  135. Fan Belt Upside Down on Ebay Car?
  136. 92 Cadillac Eldo AC Leak near the fire wall
  137. 4.9l Rpm
  138. 4.9 RWD 5 speed
  139. Can anyone interpert this A/C gauge reading??
  140. clamp-down dist caps
  141. In need of some numbers....
  142. Throttle body spacers on a 4.? engine
  143. HT4100 SES light @ low RPM, much stalling & near stalling
  144. 1992 4.9 injector replacement
  145. Need wiring diagrams.
  146. A/C refrig. temp. sensor question?
  147. Cannot getg into E.6.3 ISC Motor
  148. Sedan Deville 4.1 to 4.5 Disaster Swap “This time I’ll get right”
  149. Pain at the pump and the inspectors
  150. Your advice on the HT 4100 needed/appreciated
  151. 4.9L coolant leak
  152. high output alternator
  153. Have to pump gas pedal to get it to start, then it runs fine??
  154. 4.1 Spark Plug Wires Problem Solved (Maybe)
  155. Weak Battery + Hot Engine - Bad Alternator?
  156. Plug Gap on 4.9L??? (also Bosch Injector Question)
  157. where are the major grounding straps?
  158. I Have Codes... Can anyone interpret?
  159. "illumina" and other Gurus
  160. Fuel Type?
  161. 91 Deville Distributor Coil wiring diagram
  162. Head gasket maybe but hope not!
  163. 4.9 has irratic idle can you help
  164. '86 DeVille rear main seal
  165. where is this supposed to connect
  166. last problem with HT4100 (I hope)
  167. 92 Deville, accelerated on it's own. Friend kinda fixed it but now..
  168. 1991 Seville 4.9L Engine Stumble (TECH PLEASE)
  169. New throttle position sensor?
  170. New Transmission Fluid and Filter
  171. engine pinging off the line?
  172. radiator 1983 Eldorado refurb?
  173. 4.9 ticking when cold
  174. Stop Engine - Oil Light on 1988 4.5L V8
  175. 93 Started, now can't keep belt on
  176. engine pinging???
  177. no chime? cant' open gas lid?
  178. think these are the same parts?
  179. 4.5 Computer Tachometer
  180. Air cleaner cold start door
  181. The Surge - in my 4.9, not Iraq...
  182. 4.9 switched to 87 oct., hard starts, re-time?
  183. 92 deville sound at engine starts and stops
  184. 93 SD 4.9 Gurgling back into the overflow tank
  185. When you buy a remain. ecm, does it come already flashed?
  186. 93 Won't Start
  187. 93 Seville 4.9-Crank position sensor location?
  188. '93 Eldorado - Relays - ELC System
  189. Got new plugs/wires installed on 4.9 today.
  190. 93 deville "CHUNKing" while reved in park or nuetral.
  191. cost of tps
  192. latest 4.1 repairs
  193. 91 Caddy DeVille Sedan Belt
  194. 82 deville tranny problems
  195. 4.1 Question
  196. 1984 Fleetwood 4.1
  197. Trouble codes?
  198. I need a new throttle body
  199. 4.9 timing chain replacement ?
  200. Popular car... at the junkyard
  201. 4.9 swap
  202. Code E26 and E27
  203. 4100? worth rebuilding
  204. Need help finding power steering bracket
  205. 4.1 dampener pulley bolt
  206. ht4100- stop engine-oil pressure light flickers
  207. "The Cadillac 4.1 liter engine is beyond hope for this formula"
  208. 94 Deville won't start
  209. '94 Deville 4.9l torque conv. clutch prob?
  210. 1986 Eldorado stalls under stress
  211. 4.9's torque
  212. Right the wrongs in a 4.1 (4100)
  213. 4.9 engine
  214. 4.9 liter vanity cover removal.
  215. The Mythical 4.9 performance Chip
  216. 4.5 Liter - Last chance before I need to give it up.
  217. Possible ECM problem
  218. Got mother's 1985 Fleetwood Brougham with HT4100
  219. Member 92 Seville 89 - Old Threads
  220. Water Pump Tasks ahead
  221. wont start cold
  222. egr question
  223. Problem of the day :)
  224. 2002 DTS trouble
  225. 250 or 252?
  226. 4.9 isc adjustment: Thanks Ranger
  227. 4.5 engine swap
  228. Hall Effect
  229. How do you get to the back of the FDC
  230. 4100 RWD replacement source
  231. mechanical water temp guage
  232. deck height and bore spacing
  233. 88 4.5L Running rough
  234. 90 eldo-possible tranny issue and engine issue
  235. Exhaust Muffler
  236. 4.9 litre--flat tappet engine?
  237. 4.1 to 4.5
  238. New to Throttle Body Injection?
  239. Haynes or Chiltons
  240. 4100 Updated intake gasket set
  241. '93 Eldorado, 4.9L - Partial Fire, No Start
  242. How do you clean 4.5 throttle body?
  243. oil change
  244. Crazy Coolant Temperatures
  245. Mustard like substance in radiator
  246. Help my 91 cadilliac deville 4.9
  247. Two Problems Not Starting and Stalling
  248. 4.9 water pump
  249. Broken Upper Radiator Hose Connector
  250. 1994 Sedan Deville questions...