: HT4100 4.1, 4.5, 4.9



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  1. Premium fuel?
  2. How to find the leaky injector
  3. Cleaning the throttle body on a 4.9
  4. Spark plug removal on a 93 SDV
  5. Fuel Pump on 1990 deville
  6. 1991 Seville pics and questions
  7. Nylon or Metal timeing chain?
  8. im new here but here goes...
  9. '85 Fleetwood Brougham High Idel
  10. No fuel delivery to '87 Biaritz
  11. Better performance out of my 4.5?
  12. '89 SD 4.5 Diag. code E59, nowhere to be found.
  13. 1992 Eldorado Belt Size HELP! 4.9l
  14. Cadillac code check...
  15. $.1 motor
  16. to fix 1 or the other
  17. Caddy problems
  18. Is there a 4.9L NOS Kit?
  19. idiot lights.....
  20. i need help
  21. front pulley torque
  22. More 4.9 issues
  23. what are the best spark plugs?
  24. Engine Dyagnostic Codes
  25. information center
  26. Oil Leak 91 Eldorado 4.9
  27. idle speed adjustment
  28. Best oil filter?
  29. My errors have returned, inexplicibly. Help.
  30. DMV high emitter profile 4100 engine
  31. question on 91-up caddys with 4.9 engine
  32. Dual Output Muffler on a 91 Deville
  33. Cracked Manifold
  34. 10W40 oil is a bad weight?
  35. Dynomax Super Turbo
  36. Anyone have any luck With "Performance Modules"
  37. New To 4.9s And Have A few ?s
  38. 1990 TPS relearn procedure . . .
  39. engine backfires out of throtle body
  40. 88 eldo 4.5, changed the intake gasket yesterday!!
  41. Oil leak 4.5 engine 91 Allante
  42. Motor oil brand
  43. Coolant Leak Fixed- Now Running Rough After Warmup
  44. HELP Failed Emissions!!
  45. 87 deville stalls after a few mins of driving..
  46. I need Info soon
  47. 1986 Coupe DeVille w/ HT4100 V8
  48. 4.5 reliability + durability
  49. Porting your intake....
  50. 91 seville codes
  51. What engine and box can replace 4.1?
  52. 4.1 Autobox advice needed
  53. dealer shocks with 4.9 "information"
  54. Clearing codes on a '90 Fleetwood FWD
  55. Stalling 93 Seviile
  56. My 90's got sensor issues (and a glowing Cat Conv)
  57. 89 sedan deville major problem
  58. 4.5 is just a bigger 4.1? PLUS - BarsLeak or not?
  59. Hard to start below 0 F
  60. 82 4100 front crank oil leak
  61. 1992 Seville High Idle??
  62. Low Oil Pressure - 84 Eldo
  63. Computer Codes and Stereo Questions
  64. didn't pass emissions???
  65. Cooling Problems
  66. My '87 Deville is not running good when warm
  67. Oxygen Sensors - 1993 4.9
  68. Chips
  69. 4.5L V8 engine block leaking?
  70. Best way to use GM top end cleaner in the 4.9?
  71. 94 4.9L S-belt idlers blown - help!!
  72. 4.9L Injectors
  73. Tune up - do I have a distributor cap and rotor?
  74. 4.9 knocks under load
  75. 4.9l V8 Sfi Ohv 16v
  76. such a....BAD vibration..
  77. Can I use any coolant in my 4.9?
  78. 1995 Deville... ONLY 28K miles.... HELP
  79. NO Heat - Deville '87
  80. What can I do to make my 4.9 run like new??
  81. What kind of mpg should I be getting in my 92 4.9?
  82. Diesel engine smell on a 90 Deville
  83. HT4100 strange coolant problem
  84. Significant V4.9 engine vibration at 1300-1600 RPM
  85. Egr!!!
  86. Need 90 SDV 4.5 Idle Reset Procedure & Diag Codes
  87. Replacing HT4100 FWD
  88. Hmmmm
  89. wheres the fuel pump on my 87..?
  90. Allante Intakes
  91. Return-to-idle switch
  92. PC interface for 1994 ???
  93. low oil pressure light
  94. Low oil pressure light when breaking
  95. 92 Deville 4.9L..how many O2 sensors.
  96. 4.9 fuel injection questions
  97. Water pump change
  98. car just stalled..not starting..oil light
  99. 85 deville low idle
  100. 1991 4.9 hesitation problem
  101. oil /STOP light and "smokey" oil on 87 caddy...
  102. code E40..power steering pressure switch..anyone else with the same problem?
  103. 4.5 oil pan removal
  104. EGR Pipe Leak
  105. HELP!! Before I kill my car!
  106. HP on a 4.9L
  107. Bad gas mileage
  108. Oil pan removal 89 Coupe Deville
  109. Iac
  110. Engine swap Question, Want to dump 4100.
  111. My car runs like POOP!!
  112. 4.9 Oil Leak
  113. Recurring misfire/injector problem?
  114. isc relearn
  115. 4.9L Idle Problem
  116. Open and closed loop
  117. stalling
  118. Cadillac engine in Sand Rail
  119. oil pressure switch on 82' 4100
  120. Running Rough After Tune Up???
  121. '87 Deville with oil light on..while in idle...help please!
  122. 4.9 Headgaskets
  123. Solved What I thought was an exhaust rattle
  124. Exhaust/Tailpipe Question
  125. 4.9 Liter Performance
  126. 4.5 fwd to chevy 350
  127. no power /bad mileage
  128. missing 4100 engine, 1988
  129. I'm trying to save a Seville from the crusher
  130. Swapping 4100 for 307. Any advice?
  131. Deville runs rough under 11 gallons of gas
  132. Engine shutter on expressway
  133. 1989 caddy surging
  134. 1988 Seville (oil-le3aks)
  135. 86 Deville,swap 4.1 for 4.9.....
  136. performance exhaust for 4.9
  137. Interestingly Odd Problem!
  138. Deville 4.9 Intake Mods?
  139. BIG problem with the AIR system.....
  140. Ran rough for one minute, then gone!??
  141. What a stupid place for an oil filter!!
  142. best oil for high mileage 4.9
  143. RPM at idle for 1987 cadillac eldorado
  144. 4100 service now light
  145. 89 Cadillac Deville
  146. 1990 Allante won't start
  147. Heater core replaced, now AC line is freezing
  148. Disappearing coolant
  149. O2 sensor
  150. Oh No!!!!! Blown 4.9 Headgasket !!!!
  151. how to/ Tune up
  152. Help!! 95 Deville Fuel Inj Test
  153. 4.9 performance
  154. 92 Eldo Problems
  155. Need info on the fuel injection system on the 4100
  156. car problems
  157. firing order
  158. stripped cylinder head bolt hole on a 4.9L
  159. Newbie looking for HT4100 info
  160. Need 4.9 info.
  161. Oil Leak, 92, 4.9
  162. New member needs some help
  163. Trouble Shooting
  164. Bosch Fuel Injectors
  165. '94 Deville4.9L idles rough !
  166. Where is the fuel filter on a 90 Coupe DeVille??
  167. Engine Swaps and Expense
  168. 4.9 bearing thump
  169. Doss
  170. Recurring Cooling Problems - any ideas?
  171. Need Advise on ISC Adjustment
  172. 4.9 aftermarket (possibly)
  173. 4.9L and HEI help!
  174. 4.9 life expectancy
  175. Dead DeVille Aftermath!
  176. anyone with a GM manual ????angie????
  177. disable traction control
  178. Help! DeVille is dying!
  179. 4.5 vs. 4.9.... Allante....questions......
  180. check your egr tubes 4.9 bruthas
  181. 1984 4.1 liter waterpump
  182. H.E.I. Help Needed
  183. Low speed hesitation on pull away.
  184. 4.9 liter question
  185. bad EGR valve=poor mpg?
  186. 4.9 crappy milage
  187. More 4.9 Stall Problems!
  188. 4.9 jiggles
  189. injectors for '90 Deville
  190. 4.9 Stall Problem
  191. 1990 4.5 Deville rough idle/miss
  192. Service Code E30
  193. 4.9 performance
  194. What's so great about the 4.9 engine?
  195. 4.9 Serpentine Belt
  196. deck the heads?
  197. Leaky but good engine
  198. free power??
  199. 4.9 Performance Help
  200. Error Codes--please help
  201. throttle angle
  202. 1993 Deville
  203. 4.5 performance parts