: HT4100 4.1, 4.5, 4.9



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  1. Cars starting to run a little better!
  2. Oil Overfill Cause Engine Damage?
  3. 4T60E Trans Sport Mode???
  4. can't advance computer beyond PCM?
  5. Turbocharge the 4.9L?
  6. Transmission Wont Shift
  7. discontinued?
  8. Replaced Injectors.. Still no action in Cyls 3 and 4?
  9. Edelbrock engine....
  10. Rough Idle
  11. A/c
  12. Speedometer problems......
  13. 1985 Seville HELP NEEDED
  14. Weird A/C air condition problem
  15. Size of O-rings in fuel line
  16. Fuel Filter Location.
  17. 94 Deville Boils Over after Engine Off
  18. Dexcool in a 4.9L???
  19. 1992 4.9 goes to open loop at HWY speeds.
  20. Bad Engines?
  21. fuel pump location (84 4100)
  22. car wont start (84 4100)
  23. Overhauling and Modifying a 1982 HT4100
  24. 92 deville bad head gasket selling?
  25. 92 deville please help
  26. New 4.9 problem, horrific idle, backfiring
  27. Oil Cooler...
  28. 83 eldorado with new reman engine and tranny timing / ping probs
  29. 4.1 to 4.7
  30. Car giving me fits
  31. 89 Seville idles at 2200
  32. help with codes
  33. 4.5 cranks but no start
  34. 4.9L Stalling out
  35. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  36. Pistons for a 4.5L and 4.9L the same???
  37. 4.9 distributor help
  38. umm...help please!
  39. 84 coupe deville codes
  40. engine swap
  41. 1990 deville starter replacement
  42. TPS Enhancer
  43. What kind of spark plugs for the HT4100?
  44. Vehicle Data List, Can you spot the problem?
  45. changing belt
  46. 92 Deville - OIL IN COOLANT
  47. 94' sedan deville woes Heeellllllp.
  48. What are the troubleshooting steps for injectors/plugs/wires?
  49. 4.9 Engine Oil Cooler Line replacement
  50. INTERMITTANT "Missing" and rough running/idle
  51. Ppplllleeeeaaassseee Help!!!
  52. ok so maybe its the alternator
  53. engine coolant supplement
  54. Ford SVO Injectors, Can i use them?
  55. '85 Deville Engine Temp Fan Light
  56. If I disconnect the battery.....
  57. 4.9L distributor questions
  58. How to go into different parts of OBD?
  59. gas smell?
  60. 92 Deville Surging during idle!
  61. symptoms of a bad cat?
  62. ebay purchase question?
  63. Flowmaster 80 Series-I LOVE IT!
  64. Over Heating
  65. high throttle on start. Code 26
  66. Fram Air Hog-Test
  67. 4.9L Roller Rockers?
  68. '86 Fleetwood 75 FWD
  69. TPS Adjustment for 85 4.1 (RWD)
  70. where is the thing???!!!!!!????
  71. radiator removal and installation
  72. 92 deville "set timing mode"????
  73. Ahh!!!
  74. What to do to make car stop running rich?
  75. 92 deville clicking after shut off???
  76. Spark Knock, Continued....
  77. Throttle Body and Air CLeaner Housing
  78. Engine Dies...
  79. Quick PCV question
  80. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  81. bogging 4.9 in a Fiero
  82. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  83. Overheat Problem
  84. '89 DeVille, ISP motor bounces
  85. How to tell if water pump is going out?
  86. Overheating Badly
  87. MAT Sensor location...
  88. Serpentine belt for 4.9 ('91 Deville)?
  89. sputtering
  90. Radiator leak
  91. 15 Amp ERLS blowing
  92. 94 deville fuel delivery prob. HELP!
  93. wtf
  94. loud tapping noise in the left bank sounds like from top end
  95. swap engine
  96. eric
  97. replacing a broke pulley
  98. Jrb
  99. 87 eldorado 4.1L in an 84 fiero - SES light ON
  100. so many codes!
  101. 91 Deville 4.9 with no power- Need Help
  102. 0.07 volts for ground???
  103. 87 Eldorado 4.1L
  104. type of oil
  105. ISC motor idle speed
  106. how do i remove the throttle body?
  107. got my 4.1 reman in but it wont fire up
  108. High RPM on Motor Start - 4.9
  109. 4.5 V8 Water in Oil
  110. 88 4.5 V8 Water In Oil
  111. Aftermarket 4100 Parts?
  112. coolant leak from timing cover?
  113. Hammer -vs- Fussy Starter
  114. bad thermostats, hopefully?
  115. 4.1 TPS sensor
  116. Strange engine/ecu problem
  117. Best motor oil for 4.9?
  118. 4.5 Coolant Problems, Leaking Fluid - but from where?
  119. simple 4.9 questions
  120. 4.9L Firing order + Cylinder location HERE!
  121. 4.1 Rough Idle
  122. Best (Worst) Air Filters to Use
  123. 4.9L performance upgrades?
  124. 4.1 to 4.5 swap
  125. How much for New Head Gaskets?
  126. new mat and coolent sensors
  127. rough idle and sputtering
  128. 4.1 exhaust manifold
  129. 4.9 Head Gasket
  130. problem with "service engine soon"
  131. Advance timing on 4.9
  132. What MPG for 87 Eldorado, 4.1?
  133. E048 EGR fault code how to fix?
  134. 4.9 And The Gas Mileage Sucks!!!
  135. Any way to disable the ses light?
  136. 95 deville tranny question
  137. 92' dies then restarts by its self
  138. ECM pinouts
  139. Dead 89 deville engine
  140. Going to be a long weekend
  141. A few questions for the Caddy Experts 4.9L
  142. old radiator cap problematic?
  143. 4.9 ltr
  144. 4.9 reliability :P
  145. Help With Code
  146. confused
  147. 4.9 Ltr Timing Belt?
  148. Drive ADL switch?
  149. spark plug question
  150. code ro15
  151. 92 Fleetwood 4.9 hesitation/code help
  152. 4.5 no start, no life. sorta familiar
  153. Yea another code ??
  154. 4.1 Operating Temperatures
  155. coolant leak
  156. A few questions regarding the 4.9
  157. code questions please...
  158. Throttle body bolt stripped out of intake manifold
  159. steering wheel will lock up and car cut off
  160. Help with 89 Sedan deVille codes...
  161. how good are the bottom ends on the 4.9?
  162. E98 code - help!!??
  163. 4.9L northstar
  164. Need help ... engine kicks, accelerates/revs itself
  165. '89 DeVille a/c not working
  166. HT4100 Stalling
  167. 4.9 oil consumption
  168. ht 4100 change over to 350 chevy
  169. Will 4.9 heads fit on a 4.1 block?
  170. Thinking about getting a new coil
  171. 87 Cadillac Seville ,4.1 with blown head gasket
  172. Hi. I need lots of help concerning the 4.9L. Thanks.
  173. timing a 4.5
  174. pulley bearing? serpentine belt not moving
  175. Hub on crankshaft
  176. Tackling Motor mount Replacement-92 Seville(4.9)
  177. 1. Diag Codes 2. Engine Stall
  178. squeek squeek .my speedo cable i think
  179. coolant in oil in my new motor
  180. coolant in oil
  181. Reconnecting Spark Plug Wires - 4.9L
  182. rough poor idle on 91 Seville STS 4.9 ideas?
  183. bbob???
  184. Better MPG with 87 Octane
  185. Preliminary tune-up
  186. car from hell
  187. 1988 Coupe Deville 4.5 ECM problem
  188. Please Help!!!
  189. Well, it cranked but...
  190. 4.9 heads on a 4.5
  191. 1990 fleetwood 4.5 fuel filter and thermostat location????
  192. 4.1 V6 and 4.1 V8
  193. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  194. 93 SDV trans question
  195. can anyone shine some light on me
  196. What's wrong with my 4100?
  197. What are some tricks to make the 4100 last a long time?
  198. hurt caddy
  199. torque specs for belt tensioner pulley
  200. Need trouble codes for '83 HT-4100 Eldo
  201. 93 loud knocking within engine, while in park
  202. ht4100
  203. I bought my muffler
  204. Valve belts?
  205. gas leak
  206. Just got 3 codes, need some help!
  207. Needing help with a few things....
  208. How can I reset codes on '83 Eldo
  209. 4.9 motor buildup pics...
  210. oil light flickers at idle
  211. 83 coupe deville 4100???
  212. 1987 Fleetwood problems, maybe you guys know or been through it?
  213. how do i...
  214. Cracked Manifold
  215. Bad mpg and very throaty problem
  216. Weird ~ I like the 87 4100 growl
  217. How to check codes for A/C unit?
  218. 3 fan fault message in my 88 seville help?
  219. Fuel injector service
  220. starting
  221. flywheel to torque converter bolts
  222. Harmonic balancer 83 Fwd In-Line 4.1
  223. 4100 with 92K
  224. Newbie needs tranny and code help
  225. Deville still will not start...
  226. knocking solved
  227. Almost ready to pull the ht4100
  228. no fuel
  229. Safety Safety Safety !
  230. A Little Different No Start Problem
  231. 95 Deville Wont Start...Boo
  232. 4.9 being weird help!!!
  233. A/C help?????
  234. E67 error, any ideas?
  235. Water in door!
  236. Air Conditioning
  237. A/C Question for '92 STS
  238. ITS DONE....I finally have a smooth QUIET Cadillac
  239. ht4100 mounting to engine stand bolt size?
  240. '94 4.9 won't start!
  241. 1988 Alante will not run
  242. Swap Question 4100 (electronics)
  243. Let me tell you, water pump replacement is a pain in the @$$.
  244. 4T60E slipping
  245. Proper Engine Break In Reman 4.1
  246. Cadillac Coral?
  247. 4.1 Biarritz hesitation and stalling - long with lots of info!
  248. Marked surge at light throttle
  249. 4.1 Saddened
  250. 95 deville 4.9 miss at idle