: HT4100 4.1, 4.5, 4.9



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  1. OBD I codes for 4.x Engines
  2. junked 4.1 installed chevy 5.0 runs great
  3. I replaced my tps and isc but it stall every now an then
  4. Engine running rough
  5. 85 cadillac seville
  6. '93 4.9L Spark Plugs and Wires
  7. TCC location, please Help!!
  8. White smoke still coming from exhaust?
  9. Starter Disabled "Anti-Theft"
  10. need source for 99 cadillac service manuals
  11. HT4100 coolant issue.
  12. 92 (4.9L) stalling
  13. Cars starting to run a little better!
  14. Oil Overfill Cause Engine Damage?
  15. 4T60E Trans Sport Mode???
  16. can't advance computer beyond PCM?
  17. Turbocharge the 4.9L?
  18. Transmission Wont Shift
  19. discontinued?
  20. Replaced Injectors.. Still no action in Cyls 3 and 4?
  21. Edelbrock engine....
  22. Rough Idle
  23. A/c
  24. Speedometer problems......
  25. 1985 Seville HELP NEEDED
  26. Weird A/C air condition problem
  27. Size of O-rings in fuel line
  28. Fuel Filter Location.
  29. 94 Deville Boils Over after Engine Off
  30. Dexcool in a 4.9L???
  31. 1992 4.9 goes to open loop at HWY speeds.
  32. Bad Engines?
  33. fuel pump location (84 4100)
  34. car wont start (84 4100)
  35. Overhauling and Modifying a 1982 HT4100
  36. 92 deville bad head gasket selling?
  37. 92 deville please help
  38. New 4.9 problem, horrific idle, backfiring
  39. Oil Cooler...
  40. 83 eldorado with new reman engine and tranny timing / ping probs
  41. 4.1 to 4.7
  42. Car giving me fits
  43. 89 Seville idles at 2200
  44. help with codes
  45. 4.5 cranks but no start
  46. 4.9L Stalling out
  47. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  48. Pistons for a 4.5L and 4.9L the same???
  49. 4.9 distributor help
  50. umm...help please!
  51. 84 coupe deville codes
  52. engine swap
  53. 1990 deville starter replacement
  54. TPS Enhancer
  55. What kind of spark plugs for the HT4100?
  56. Vehicle Data List, Can you spot the problem?
  57. changing belt
  58. 92 Deville - OIL IN COOLANT
  59. 94' sedan deville woes Heeellllllp.
  60. What are the troubleshooting steps for injectors/plugs/wires?
  61. 4.9 Engine Oil Cooler Line replacement
  62. INTERMITTANT "Missing" and rough running/idle
  63. Ppplllleeeeaaassseee Help!!!
  64. ok so maybe its the alternator
  65. engine coolant supplement
  66. Ford SVO Injectors, Can i use them?
  67. '85 Deville Engine Temp Fan Light
  68. If I disconnect the battery.....
  69. 4.9L distributor questions
  70. How to go into different parts of OBD?
  71. gas smell?
  72. 92 Deville Surging during idle!
  73. symptoms of a bad cat?
  74. ebay purchase question?
  75. Flowmaster 80 Series-I LOVE IT!
  76. Over Heating
  77. high throttle on start. Code 26
  78. Fram Air Hog-Test
  79. 4.9L Roller Rockers?
  80. '86 Fleetwood 75 FWD
  81. TPS Adjustment for 85 4.1 (RWD)
  82. where is the thing???!!!!!!????
  83. radiator removal and installation
  84. 92 deville "set timing mode"????
  85. Ahh!!!
  86. What to do to make car stop running rich?
  87. 92 deville clicking after shut off???
  88. Spark Knock, Continued....
  89. Throttle Body and Air CLeaner Housing
  90. Engine Dies...
  91. Quick PCV question
  92. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  93. bogging 4.9 in a Fiero
  94. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  95. Overheat Problem
  96. '89 DeVille, ISP motor bounces
  97. How to tell if water pump is going out?
  98. Overheating Badly
  99. MAT Sensor location...
  100. Serpentine belt for 4.9 ('91 Deville)?
  101. sputtering
  102. Radiator leak
  103. 15 Amp ERLS blowing
  104. 94 deville fuel delivery prob. HELP!
  105. wtf
  106. loud tapping noise in the left bank sounds like from top end
  107. swap engine
  108. eric
  109. replacing a broke pulley
  110. Jrb
  111. 87 eldorado 4.1L in an 84 fiero - SES light ON
  112. so many codes!
  113. 91 Deville 4.9 with no power- Need Help
  114. 0.07 volts for ground???
  115. 87 Eldorado 4.1L
  116. type of oil
  117. ISC motor idle speed
  118. how do i remove the throttle body?
  119. got my 4.1 reman in but it wont fire up
  120. High RPM on Motor Start - 4.9
  121. 4.5 V8 Water in Oil
  122. 88 4.5 V8 Water In Oil
  123. Aftermarket 4100 Parts?
  124. coolant leak from timing cover?
  125. Hammer -vs- Fussy Starter
  126. bad thermostats, hopefully?
  127. 4.1 TPS sensor
  128. Strange engine/ecu problem
  129. Best motor oil for 4.9?
  130. 4.5 Coolant Problems, Leaking Fluid - but from where?
  131. simple 4.9 questions
  132. 4.9L Firing order + Cylinder location HERE!
  133. 4.1 Rough Idle
  134. Best (Worst) Air Filters to Use
  135. 4.9L performance upgrades?
  136. 4.1 to 4.5 swap
  137. How much for New Head Gaskets?
  138. new mat and coolent sensors
  139. rough idle and sputtering
  140. 4.1 exhaust manifold
  141. 4.9 Head Gasket
  142. problem with "service engine soon"
  143. Advance timing on 4.9
  144. What MPG for 87 Eldorado, 4.1?
  145. E048 EGR fault code how to fix?
  146. 4.9 And The Gas Mileage Sucks!!!
  147. Any way to disable the ses light?
  148. 95 deville tranny question
  149. 92' dies then restarts by its self
  150. ECM pinouts
  151. Dead 89 deville engine
  152. Going to be a long weekend
  153. A few questions for the Caddy Experts 4.9L
  154. old radiator cap problematic?
  155. 4.9 ltr
  156. 4.9 reliability :P
  157. Help With Code
  158. confused
  159. 4.9 Ltr Timing Belt?
  160. Drive ADL switch?
  161. spark plug question
  162. code ro15
  163. 92 Fleetwood 4.9 hesitation/code help
  164. 4.5 no start, no life. sorta familiar
  165. Yea another code ??
  166. 4.1 Operating Temperatures
  167. coolant leak
  168. A few questions regarding the 4.9
  169. code questions please...
  170. Throttle body bolt stripped out of intake manifold
  171. steering wheel will lock up and car cut off
  172. Help with 89 Sedan deVille codes...
  173. how good are the bottom ends on the 4.9?
  174. E98 code - help!!??
  175. 4.9L northstar
  176. Need help ... engine kicks, accelerates/revs itself
  177. '89 DeVille a/c not working
  178. HT4100 Stalling
  179. 4.9 oil consumption
  180. ht 4100 change over to 350 chevy
  181. Will 4.9 heads fit on a 4.1 block?
  182. Thinking about getting a new coil
  183. 87 Cadillac Seville ,4.1 with blown head gasket
  184. Hi. I need lots of help concerning the 4.9L. Thanks.
  185. timing a 4.5
  186. pulley bearing? serpentine belt not moving
  187. Hub on crankshaft
  188. Tackling Motor mount Replacement-92 Seville(4.9)
  189. 1. Diag Codes 2. Engine Stall
  190. squeek squeek .my speedo cable i think
  191. coolant in oil in my new motor
  192. coolant in oil
  193. Reconnecting Spark Plug Wires - 4.9L
  194. rough poor idle on 91 Seville STS 4.9 ideas?
  195. bbob???
  196. Better MPG with 87 Octane
  197. Preliminary tune-up
  198. car from hell
  199. 1988 Coupe Deville 4.5 ECM problem
  200. Please Help!!!
  201. Well, it cranked but...
  202. 4.9 heads on a 4.5
  203. 1990 fleetwood 4.5 fuel filter and thermostat location????
  204. 4.1 V6 and 4.1 V8
  205. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  206. 93 SDV trans question
  207. can anyone shine some light on me
  208. What's wrong with my 4100?
  209. What are some tricks to make the 4100 last a long time?
  210. hurt caddy
  211. torque specs for belt tensioner pulley
  212. Need trouble codes for '83 HT-4100 Eldo
  213. 93 loud knocking within engine, while in park
  214. ht4100
  215. I bought my muffler
  216. Valve belts?
  217. gas leak
  218. Just got 3 codes, need some help!
  219. Needing help with a few things....
  220. How can I reset codes on '83 Eldo
  221. 4.9 motor buildup pics...
  222. oil light flickers at idle
  223. 83 coupe deville 4100???
  224. 1987 Fleetwood problems, maybe you guys know or been through it?
  225. how do i...
  226. Cracked Manifold
  227. Bad mpg and very throaty problem
  228. Weird ~ I like the 87 4100 growl
  229. How to check codes for A/C unit?
  230. 3 fan fault message in my 88 seville help?
  231. Fuel injector service
  232. starting
  233. flywheel to torque converter bolts
  234. Harmonic balancer 83 Fwd In-Line 4.1
  235. 4100 with 92K
  236. Newbie needs tranny and code help
  237. Deville still will not start...
  238. knocking solved
  239. Almost ready to pull the ht4100
  240. no fuel
  241. Safety Safety Safety !
  242. A Little Different No Start Problem
  243. 95 Deville Wont Start...Boo
  244. 4.9 being weird help!!!
  245. A/C help?????
  246. E67 error, any ideas?
  247. Water in door!
  248. Air Conditioning
  249. A/C Question for '92 STS
  250. ITS DONE....I finally have a smooth QUIET Cadillac