: HT4100 4.1, 4.5, 4.9



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  1. Speedometer problems......
  2. 1985 Seville HELP NEEDED
  3. Weird A/C air condition problem
  4. Size of O-rings in fuel line
  5. Fuel Filter Location.
  6. 94 Deville Boils Over after Engine Off
  7. Dexcool in a 4.9L???
  8. 1992 4.9 goes to open loop at HWY speeds.
  9. Bad Engines?
  10. fuel pump location (84 4100)
  11. car wont start (84 4100)
  12. Overhauling and Modifying a 1982 HT4100
  13. 92 deville bad head gasket selling?
  14. 92 deville please help
  15. New 4.9 problem, horrific idle, backfiring
  16. Oil Cooler...
  17. 83 eldorado with new reman engine and tranny timing / ping probs
  18. 4.1 to 4.7
  19. Car giving me fits
  20. 89 Seville idles at 2200
  21. help with codes
  22. 4.5 cranks but no start
  23. 4.9L Stalling out
  24. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  25. Pistons for a 4.5L and 4.9L the same???
  26. 4.9 distributor help
  27. umm...help please!
  28. 84 coupe deville codes
  29. engine swap
  30. 1990 deville starter replacement
  31. TPS Enhancer
  32. What kind of spark plugs for the HT4100?
  33. Vehicle Data List, Can you spot the problem?
  34. changing belt
  35. 92 Deville - OIL IN COOLANT
  36. 94' sedan deville woes Heeellllllp.
  37. What are the troubleshooting steps for injectors/plugs/wires?
  38. 4.9 Engine Oil Cooler Line replacement
  39. INTERMITTANT "Missing" and rough running/idle
  40. Ppplllleeeeaaassseee Help!!!
  41. ok so maybe its the alternator
  42. engine coolant supplement
  43. Ford SVO Injectors, Can i use them?
  44. '85 Deville Engine Temp Fan Light
  45. If I disconnect the battery.....
  46. 4.9L distributor questions
  47. How to go into different parts of OBD?
  48. gas smell?
  49. 92 Deville Surging during idle!
  50. symptoms of a bad cat?
  51. ebay purchase question?
  52. Flowmaster 80 Series-I LOVE IT!
  53. Over Heating
  54. high throttle on start. Code 26
  55. Fram Air Hog-Test
  56. 4.9L Roller Rockers?
  57. '86 Fleetwood 75 FWD
  58. TPS Adjustment for 85 4.1 (RWD)
  59. where is the thing???!!!!!!????
  60. radiator removal and installation
  61. 92 deville "set timing mode"????
  62. Ahh!!!
  63. What to do to make car stop running rich?
  64. 92 deville clicking after shut off???
  65. Spark Knock, Continued....
  66. Throttle Body and Air CLeaner Housing
  67. Engine Dies...
  68. Quick PCV question
  69. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  70. bogging 4.9 in a Fiero
  71. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  72. Overheat Problem
  73. '89 DeVille, ISP motor bounces
  74. How to tell if water pump is going out?
  75. Overheating Badly
  76. MAT Sensor location...
  77. Serpentine belt for 4.9 ('91 Deville)?
  78. sputtering
  79. Radiator leak
  80. 15 Amp ERLS blowing
  81. 94 deville fuel delivery prob. HELP!
  82. wtf
  83. loud tapping noise in the left bank sounds like from top end
  84. swap engine
  85. eric
  86. replacing a broke pulley
  87. Jrb
  88. 87 eldorado 4.1L in an 84 fiero - SES light ON
  89. so many codes!
  90. 91 Deville 4.9 with no power- Need Help
  91. 0.07 volts for ground???
  92. 87 Eldorado 4.1L
  93. type of oil
  94. ISC motor idle speed
  95. how do i remove the throttle body?
  96. got my 4.1 reman in but it wont fire up
  97. High RPM on Motor Start - 4.9
  98. 4.5 V8 Water in Oil
  99. 88 4.5 V8 Water In Oil
  100. Aftermarket 4100 Parts?
  101. coolant leak from timing cover?
  102. Hammer -vs- Fussy Starter
  103. bad thermostats, hopefully?
  104. 4.1 TPS sensor
  105. Strange engine/ecu problem
  106. Best motor oil for 4.9?
  107. 4.5 Coolant Problems, Leaking Fluid - but from where?
  108. simple 4.9 questions
  109. 4.9L Firing order + Cylinder location HERE!
  110. 4.1 Rough Idle
  111. Best (Worst) Air Filters to Use
  112. 4.9L performance upgrades?
  113. 4.1 to 4.5 swap
  114. How much for New Head Gaskets?
  115. new mat and coolent sensors
  116. rough idle and sputtering
  117. 4.1 exhaust manifold
  118. 4.9 Head Gasket
  119. problem with "service engine soon"
  120. Advance timing on 4.9
  121. What MPG for 87 Eldorado, 4.1?
  122. E048 EGR fault code how to fix?
  123. 4.9 And The Gas Mileage Sucks!!!
  124. Any way to disable the ses light?
  125. 95 deville tranny question
  126. 92' dies then restarts by its self
  127. ECM pinouts
  128. Dead 89 deville engine
  129. Going to be a long weekend
  130. A few questions for the Caddy Experts 4.9L
  131. old radiator cap problematic?
  132. 4.9 ltr
  133. 4.9 reliability :P
  134. Help With Code
  135. confused
  136. 4.9 Ltr Timing Belt?
  137. Drive ADL switch?
  138. spark plug question
  139. code ro15
  140. 92 Fleetwood 4.9 hesitation/code help
  141. 4.5 no start, no life. sorta familiar
  142. Yea another code ??
  143. 4.1 Operating Temperatures
  144. coolant leak
  145. A few questions regarding the 4.9
  146. code questions please...
  147. Throttle body bolt stripped out of intake manifold
  148. steering wheel will lock up and car cut off
  149. Help with 89 Sedan deVille codes...
  150. how good are the bottom ends on the 4.9?
  151. E98 code - help!!??
  152. 4.9L northstar
  153. Need help ... engine kicks, accelerates/revs itself
  154. '89 DeVille a/c not working
  155. HT4100 Stalling
  156. 4.9 oil consumption
  157. ht 4100 change over to 350 chevy
  158. Will 4.9 heads fit on a 4.1 block?
  159. Thinking about getting a new coil
  160. 87 Cadillac Seville ,4.1 with blown head gasket
  161. Hi. I need lots of help concerning the 4.9L. Thanks.
  162. timing a 4.5
  163. pulley bearing? serpentine belt not moving
  164. Hub on crankshaft
  165. Tackling Motor mount Replacement-92 Seville(4.9)
  166. 1. Diag Codes 2. Engine Stall
  167. squeek squeek .my speedo cable i think
  168. coolant in oil in my new motor
  169. coolant in oil
  170. Reconnecting Spark Plug Wires - 4.9L
  171. rough poor idle on 91 Seville STS 4.9 ideas?
  172. bbob???
  173. Better MPG with 87 Octane
  174. Preliminary tune-up
  175. car from hell
  176. 1988 Coupe Deville 4.5 ECM problem
  177. Please Help!!!
  178. Well, it cranked but...
  179. 4.9 heads on a 4.5
  180. 1990 fleetwood 4.5 fuel filter and thermostat location????
  181. 4.1 V6 and 4.1 V8
  182. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  183. 93 SDV trans question
  184. can anyone shine some light on me
  185. What's wrong with my 4100?
  186. What are some tricks to make the 4100 last a long time?
  187. hurt caddy
  188. torque specs for belt tensioner pulley
  189. Need trouble codes for '83 HT-4100 Eldo
  190. 93 loud knocking within engine, while in park
  191. ht4100
  192. I bought my muffler
  193. Valve belts?
  194. gas leak
  195. Just got 3 codes, need some help!
  196. Needing help with a few things....
  197. How can I reset codes on '83 Eldo
  198. 4.9 motor buildup pics...
  199. oil light flickers at idle
  200. 83 coupe deville 4100???
  201. 1987 Fleetwood problems, maybe you guys know or been through it?
  202. how do i...
  203. Cracked Manifold
  204. Bad mpg and very throaty problem
  205. Weird ~ I like the 87 4100 growl
  206. How to check codes for A/C unit?
  207. 3 fan fault message in my 88 seville help?
  208. Fuel injector service
  209. starting
  210. flywheel to torque converter bolts
  211. Harmonic balancer 83 Fwd In-Line 4.1
  212. 4100 with 92K
  213. Newbie needs tranny and code help
  214. Deville still will not start...
  215. knocking solved
  216. Almost ready to pull the ht4100
  217. no fuel
  218. Safety Safety Safety !
  219. A Little Different No Start Problem
  220. 95 Deville Wont Start...Boo
  221. 4.9 being weird help!!!
  222. A/C help?????
  223. E67 error, any ideas?
  224. Water in door!
  225. Air Conditioning
  226. A/C Question for '92 STS
  227. ITS DONE....I finally have a smooth QUIET Cadillac
  228. ht4100 mounting to engine stand bolt size?
  229. '94 4.9 won't start!
  230. 1988 Alante will not run
  231. Swap Question 4100 (electronics)
  232. Let me tell you, water pump replacement is a pain in the @$$.
  233. 4T60E slipping
  234. Proper Engine Break In Reman 4.1
  235. Cadillac Coral?
  236. 4.1 Biarritz hesitation and stalling - long with lots of info!
  237. Marked surge at light throttle
  238. 4.1 Saddened
  239. 95 deville 4.9 miss at idle
  240. newbie
  241. Repeated O2 Sensor Problem 91 4.9l
  242. Bars Golden Seal Powder Stop Leak And Other Stuff (Deals?)
  243. Need second opinion 4.1 swap to northstar
  244. gonna replace the 4100 on 83 cadillac deville would it be possible to put a chevy 350
  245. Is my 4.9 on the way out?
  246. Installing Reman Ht 4.1 Oil And Coolant Suggestions
  247. What should I do if I put too much bars leak in?
  248. E-030 + Poor Mileage + Bouncing High Idle At Startup
  249. Transmission Looseing fluid , 1 qt per minute
  250. OMG..Maybe it is the water pump. THIS IS ANNOYING.