: HT4100 4.1, 4.5, 4.9



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  1. Cadillac code check...
  2. $.1 motor
  3. to fix 1 or the other
  4. Caddy problems
  5. Is there a 4.9L NOS Kit?
  6. idiot lights.....
  7. i need help
  8. front pulley torque
  9. More 4.9 issues
  10. what are the best spark plugs?
  11. Engine Dyagnostic Codes
  12. information center
  13. Oil Leak 91 Eldorado 4.9
  14. idle speed adjustment
  15. Best oil filter?
  16. My errors have returned, inexplicibly. Help.
  17. DMV high emitter profile 4100 engine
  18. question on 91-up caddys with 4.9 engine
  19. Dual Output Muffler on a 91 Deville
  20. Cracked Manifold
  21. 10W40 oil is a bad weight?
  22. Dynomax Super Turbo
  23. Anyone have any luck With "Performance Modules"
  24. New To 4.9s And Have A few ?s
  25. 1990 TPS relearn procedure . . .
  26. engine backfires out of throtle body
  27. 88 eldo 4.5, changed the intake gasket yesterday!!
  28. Oil leak 4.5 engine 91 Allante
  29. Motor oil brand
  30. Coolant Leak Fixed- Now Running Rough After Warmup
  31. HELP Failed Emissions!!
  32. 87 deville stalls after a few mins of driving..
  33. I need Info soon
  34. 1986 Coupe DeVille w/ HT4100 V8
  35. 4.5 reliability + durability
  36. Porting your intake....
  37. 91 seville codes
  38. What engine and box can replace 4.1?
  39. 4.1 Autobox advice needed
  40. dealer shocks with 4.9 "information"
  41. Clearing codes on a '90 Fleetwood FWD
  42. Stalling 93 Seviile
  43. My 90's got sensor issues (and a glowing Cat Conv)
  44. 89 sedan deville major problem
  45. 4.5 is just a bigger 4.1? PLUS - BarsLeak or not?
  46. Hard to start below 0 F
  47. 82 4100 front crank oil leak
  48. 1992 Seville High Idle??
  49. Low Oil Pressure - 84 Eldo
  50. Computer Codes and Stereo Questions
  51. didn't pass emissions???
  52. Cooling Problems
  53. My '87 Deville is not running good when warm
  54. Oxygen Sensors - 1993 4.9
  55. Chips
  56. 4.5L V8 engine block leaking?
  57. Best way to use GM top end cleaner in the 4.9?
  58. 94 4.9L S-belt idlers blown - help!!
  59. 4.9L Injectors
  60. Tune up - do I have a distributor cap and rotor?
  61. 4.9 knocks under load
  62. 4.9l V8 Sfi Ohv 16v
  63. such a....BAD vibration..
  64. Can I use any coolant in my 4.9?
  65. 1995 Deville... ONLY 28K miles.... HELP
  66. NO Heat - Deville '87
  67. What can I do to make my 4.9 run like new??
  68. What kind of mpg should I be getting in my 92 4.9?
  69. Diesel engine smell on a 90 Deville
  70. HT4100 strange coolant problem
  71. Significant V4.9 engine vibration at 1300-1600 RPM
  72. Egr!!!
  73. Need 90 SDV 4.5 Idle Reset Procedure & Diag Codes
  74. Replacing HT4100 FWD
  75. Hmmmm
  76. wheres the fuel pump on my 87..?
  77. Allante Intakes
  78. Return-to-idle switch
  79. PC interface for 1994 ???
  80. low oil pressure light
  81. Low oil pressure light when breaking
  82. 92 Deville 4.9L..how many O2 sensors.
  83. 4.9 fuel injection questions
  84. Water pump change
  85. car just stalled..not starting..oil light
  86. 85 deville low idle
  87. 1991 4.9 hesitation problem
  88. oil /STOP light and "smokey" oil on 87 caddy...
  89. code E40..power steering pressure switch..anyone else with the same problem?
  90. 4.5 oil pan removal
  91. EGR Pipe Leak
  92. HELP!! Before I kill my car!
  93. HP on a 4.9L
  94. Bad gas mileage
  95. Oil pan removal 89 Coupe Deville
  96. Iac
  97. Engine swap Question, Want to dump 4100.
  98. My car runs like POOP!!
  99. 4.9 Oil Leak
  100. Recurring misfire/injector problem?
  101. isc relearn
  102. 4.9L Idle Problem
  103. Open and closed loop
  104. stalling
  105. Cadillac engine in Sand Rail
  106. oil pressure switch on 82' 4100
  107. Running Rough After Tune Up???
  108. '87 Deville with oil light on..while in idle...help please!
  109. 4.9 Headgaskets
  110. Solved What I thought was an exhaust rattle
  111. Exhaust/Tailpipe Question
  112. 4.9 Liter Performance
  113. 4.5 fwd to chevy 350
  114. no power /bad mileage
  115. missing 4100 engine, 1988
  116. I'm trying to save a Seville from the crusher
  117. Swapping 4100 for 307. Any advice?
  118. Deville runs rough under 11 gallons of gas
  119. Engine shutter on expressway
  120. 1989 caddy surging
  121. 1988 Seville (oil-le3aks)
  122. 86 Deville,swap 4.1 for 4.9.....
  123. performance exhaust for 4.9
  124. Interestingly Odd Problem!
  125. Deville 4.9 Intake Mods?
  126. BIG problem with the AIR system.....
  127. Ran rough for one minute, then gone!??
  128. What a stupid place for an oil filter!!
  129. best oil for high mileage 4.9
  130. RPM at idle for 1987 cadillac eldorado
  131. 4100 service now light
  132. 89 Cadillac Deville
  133. 1990 Allante won't start
  134. Heater core replaced, now AC line is freezing
  135. Disappearing coolant
  136. O2 sensor
  137. Oh No!!!!! Blown 4.9 Headgasket !!!!
  138. how to/ Tune up
  139. Help!! 95 Deville Fuel Inj Test
  140. 4.9 performance
  141. 92 Eldo Problems
  142. Need info on the fuel injection system on the 4100
  143. car problems
  144. firing order
  145. stripped cylinder head bolt hole on a 4.9L
  146. Newbie looking for HT4100 info
  147. Need 4.9 info.
  148. Oil Leak, 92, 4.9
  149. New member needs some help
  150. Trouble Shooting
  151. Bosch Fuel Injectors
  152. '94 Deville4.9L idles rough !
  153. Where is the fuel filter on a 90 Coupe DeVille??
  154. Engine Swaps and Expense
  155. 4.9 bearing thump
  156. Doss
  157. Recurring Cooling Problems - any ideas?
  158. Need Advise on ISC Adjustment
  159. 4.9 aftermarket (possibly)
  160. 4.9L and HEI help!
  161. 4.9 life expectancy
  162. Dead DeVille Aftermath!
  163. anyone with a GM manual ????angie????
  164. disable traction control
  165. Help! DeVille is dying!
  166. 4.5 vs. 4.9.... Allante....questions......
  167. check your egr tubes 4.9 bruthas
  168. 1984 4.1 liter waterpump
  169. H.E.I. Help Needed
  170. Low speed hesitation on pull away.
  171. 4.9 liter question
  172. bad EGR valve=poor mpg?
  173. 4.9 crappy milage
  174. More 4.9 Stall Problems!
  175. 4.9 jiggles
  176. injectors for '90 Deville
  177. 4.9 Stall Problem
  178. 1990 4.5 Deville rough idle/miss
  179. Service Code E30
  180. 4.9 performance
  181. What's so great about the 4.9 engine?
  182. 4.9 Serpentine Belt
  183. deck the heads?
  184. Leaky but good engine
  185. free power??
  186. 4.9 Performance Help
  187. Error Codes--please help
  188. throttle angle
  189. 1993 Deville
  190. 4.5 performance parts