: HT4100 4.1, 4.5, 4.9



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  1. Car shuts off after idle for 40 min
  2. ACDelco filter
  3. 1991 Fleetwood 4.9 high speed power loss
  4. Remote oil filter for 4.9 ?
  5. low oil pressure light
  6. 4.9 performance upgrades ?
  7. Premium fuel?
  8. How to find the leaky injector
  9. Cleaning the throttle body on a 4.9
  10. Spark plug removal on a 93 SDV
  11. Fuel Pump on 1990 deville
  12. 1991 Seville pics and questions
  13. Nylon or Metal timeing chain?
  14. im new here but here goes...
  15. '85 Fleetwood Brougham High Idel
  16. No fuel delivery to '87 Biaritz
  17. Better performance out of my 4.5?
  18. '89 SD 4.5 Diag. code E59, nowhere to be found.
  19. 1992 Eldorado Belt Size HELP! 4.9l
  20. Cadillac code check...
  21. $.1 motor
  22. to fix 1 or the other
  23. Caddy problems
  24. Is there a 4.9L NOS Kit?
  25. idiot lights.....
  26. i need help
  27. front pulley torque
  28. More 4.9 issues
  29. what are the best spark plugs?
  30. Engine Dyagnostic Codes
  31. information center
  32. Oil Leak 91 Eldorado 4.9
  33. idle speed adjustment
  34. Best oil filter?
  35. My errors have returned, inexplicibly. Help.
  36. DMV high emitter profile 4100 engine
  37. question on 91-up caddys with 4.9 engine
  38. Dual Output Muffler on a 91 Deville
  39. Cracked Manifold
  40. 10W40 oil is a bad weight?
  41. Dynomax Super Turbo
  42. Anyone have any luck With "Performance Modules"
  43. New To 4.9s And Have A few ?s
  44. 1990 TPS relearn procedure . . .
  45. engine backfires out of throtle body
  46. 88 eldo 4.5, changed the intake gasket yesterday!!
  47. Oil leak 4.5 engine 91 Allante
  48. Motor oil brand
  49. Coolant Leak Fixed- Now Running Rough After Warmup
  50. HELP Failed Emissions!!
  51. 87 deville stalls after a few mins of driving..
  52. I need Info soon
  53. 1986 Coupe DeVille w/ HT4100 V8
  54. 4.5 reliability + durability
  55. Porting your intake....
  56. 91 seville codes
  57. What engine and box can replace 4.1?
  58. 4.1 Autobox advice needed
  59. dealer shocks with 4.9 "information"
  60. Clearing codes on a '90 Fleetwood FWD
  61. Stalling 93 Seviile
  62. My 90's got sensor issues (and a glowing Cat Conv)
  63. 89 sedan deville major problem
  64. 4.5 is just a bigger 4.1? PLUS - BarsLeak or not?
  65. Hard to start below 0 F
  66. 82 4100 front crank oil leak
  67. 1992 Seville High Idle??
  68. Low Oil Pressure - 84 Eldo
  69. Computer Codes and Stereo Questions
  70. didn't pass emissions???
  71. Cooling Problems
  72. My '87 Deville is not running good when warm
  73. Oxygen Sensors - 1993 4.9
  74. Chips
  75. 4.5L V8 engine block leaking?
  76. Best way to use GM top end cleaner in the 4.9?
  77. 94 4.9L S-belt idlers blown - help!!
  78. 4.9L Injectors
  79. Tune up - do I have a distributor cap and rotor?
  80. 4.9 knocks under load
  81. 4.9l V8 Sfi Ohv 16v
  82. such a....BAD vibration..
  83. Can I use any coolant in my 4.9?
  84. 1995 Deville... ONLY 28K miles.... HELP
  85. NO Heat - Deville '87
  86. What can I do to make my 4.9 run like new??
  87. What kind of mpg should I be getting in my 92 4.9?
  88. Diesel engine smell on a 90 Deville
  89. HT4100 strange coolant problem
  90. Significant V4.9 engine vibration at 1300-1600 RPM
  91. Egr!!!
  92. Need 90 SDV 4.5 Idle Reset Procedure & Diag Codes
  93. Replacing HT4100 FWD
  94. Hmmmm
  95. wheres the fuel pump on my 87..?
  96. Allante Intakes
  97. Return-to-idle switch
  98. PC interface for 1994 ???
  99. low oil pressure light
  100. Low oil pressure light when breaking
  101. 92 Deville 4.9L..how many O2 sensors.
  102. 4.9 fuel injection questions
  103. Water pump change
  104. car just stalled..not starting..oil light
  105. 85 deville low idle
  106. 1991 4.9 hesitation problem
  107. oil /STOP light and "smokey" oil on 87 caddy...
  108. code E40..power steering pressure switch..anyone else with the same problem?
  109. 4.5 oil pan removal
  110. EGR Pipe Leak
  111. HELP!! Before I kill my car!
  112. HP on a 4.9L
  113. Bad gas mileage
  114. Oil pan removal 89 Coupe Deville
  115. Iac
  116. Engine swap Question, Want to dump 4100.
  117. My car runs like POOP!!
  118. 4.9 Oil Leak
  119. Recurring misfire/injector problem?
  120. isc relearn
  121. 4.9L Idle Problem
  122. Open and closed loop
  123. stalling
  124. Cadillac engine in Sand Rail
  125. oil pressure switch on 82' 4100
  126. Running Rough After Tune Up???
  127. '87 Deville with oil light on..while in idle...help please!
  128. 4.9 Headgaskets
  129. Solved What I thought was an exhaust rattle
  130. Exhaust/Tailpipe Question
  131. 4.9 Liter Performance
  132. 4.5 fwd to chevy 350
  133. no power /bad mileage
  134. missing 4100 engine, 1988
  135. I'm trying to save a Seville from the crusher
  136. Swapping 4100 for 307. Any advice?
  137. Deville runs rough under 11 gallons of gas
  138. Engine shutter on expressway
  139. 1989 caddy surging
  140. 1988 Seville (oil-le3aks)
  141. 86 Deville,swap 4.1 for 4.9.....
  142. performance exhaust for 4.9
  143. Interestingly Odd Problem!
  144. Deville 4.9 Intake Mods?
  145. BIG problem with the AIR system.....
  146. Ran rough for one minute, then gone!??
  147. What a stupid place for an oil filter!!
  148. best oil for high mileage 4.9
  149. RPM at idle for 1987 cadillac eldorado
  150. 4100 service now light
  151. 89 Cadillac Deville
  152. 1990 Allante won't start
  153. Heater core replaced, now AC line is freezing
  154. Disappearing coolant
  155. O2 sensor
  156. Oh No!!!!! Blown 4.9 Headgasket !!!!
  157. how to/ Tune up
  158. Help!! 95 Deville Fuel Inj Test
  159. 4.9 performance
  160. 92 Eldo Problems
  161. Need info on the fuel injection system on the 4100
  162. car problems
  163. firing order
  164. stripped cylinder head bolt hole on a 4.9L
  165. Newbie looking for HT4100 info
  166. Need 4.9 info.
  167. Oil Leak, 92, 4.9
  168. New member needs some help
  169. Trouble Shooting
  170. Bosch Fuel Injectors
  171. '94 Deville4.9L idles rough !
  172. Where is the fuel filter on a 90 Coupe DeVille??
  173. Engine Swaps and Expense
  174. 4.9 bearing thump
  175. Doss
  176. Recurring Cooling Problems - any ideas?
  177. Need Advise on ISC Adjustment
  178. 4.9 aftermarket (possibly)
  179. 4.9L and HEI help!
  180. 4.9 life expectancy
  181. Dead DeVille Aftermath!
  182. anyone with a GM manual ????angie????
  183. disable traction control
  184. Help! DeVille is dying!
  185. 4.5 vs. 4.9.... Allante....questions......
  186. check your egr tubes 4.9 bruthas
  187. 1984 4.1 liter waterpump
  188. H.E.I. Help Needed
  189. Low speed hesitation on pull away.
  190. 4.9 liter question
  191. bad EGR valve=poor mpg?
  192. 4.9 crappy milage
  193. More 4.9 Stall Problems!
  194. 4.9 jiggles
  195. injectors for '90 Deville
  196. 4.9 Stall Problem
  197. 1990 4.5 Deville rough idle/miss
  198. Service Code E30
  199. 4.9 performance
  200. What's so great about the 4.9 engine?
  201. 4.9 Serpentine Belt
  202. deck the heads?
  203. Leaky but good engine
  204. free power??
  205. 4.9 Performance Help
  206. Error Codes--please help
  207. throttle angle
  208. 1993 Deville
  209. 4.5 performance parts