: HT4100 4.1, 4.5, 4.9



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  1. White Smoke
  2. Radiator Leak
  3. 4.5 Vs 4.9... Compairable?
  4. ROUGH idle , strange code .
  5. 85 Fleetwood FWD Engine Trouble
  6. WTB: ASAP 4.9L Front Exhaust Manifold
  7. 91 Deville 4.9 rough idle
  8. My 86 SedanDeville is running rough above 55mph
  9. Has anyone converted to the electrocruise?
  10. '86 DeVille HT4100 knock - please help :-(
  11. Engine noise while in park?
  12. 4.9 with poor gas mileage. just changed o2
  13. Low Oil Pressure
  14. Changing oil pan gasket
  15. Looking for a couple of VSS wires - '91 Deville
  16. the return of E48/E49
  17. 84' seville is a mess!
  18. EGR Vavle
  19. engine swap
  20. 92deville, idle(rough) Injector service??
  21. CAM sensor
  22. supercharging the 4.9
  23. Please help me with my 4.1..or give me a mechanic who can
  24. How to remove/replace rattling CAT
  25. pellets and 4.5 engine
  26. ohm reading for injectors on 4.5
  27. ? acceptable ohm resistance for injectors
  28. Intermittent Stalling
  29. 4.5 EGR vs. 4.9 EGR
  30. 4.5 engine
  31. Pushrod?
  32. Got new codes today.
  33. 90 Deville Dies while driving
  34. 84 4.1 Swap To 305/350 ?
  35. new to the forum, need a little help (90 4.5l pfi)
  36. Air Pump Seized (4.1 engine)
  37. OBD I codes for 4.x Engines
  38. junked 4.1 installed chevy 5.0 runs great
  39. I replaced my tps and isc but it stall every now an then
  40. Engine running rough
  41. 85 cadillac seville
  42. '93 4.9L Spark Plugs and Wires
  43. TCC location, please Help!!
  44. White smoke still coming from exhaust?
  45. Starter Disabled "Anti-Theft"
  46. need source for 99 cadillac service manuals
  47. HT4100 coolant issue.
  48. 92 (4.9L) stalling
  49. Cars starting to run a little better!
  50. Oil Overfill Cause Engine Damage?
  51. 4T60E Trans Sport Mode???
  52. can't advance computer beyond PCM?
  53. Turbocharge the 4.9L?
  54. Transmission Wont Shift
  55. discontinued?
  56. Replaced Injectors.. Still no action in Cyls 3 and 4?
  57. Edelbrock engine....
  58. Rough Idle
  59. A/c
  60. Speedometer problems......
  61. 1985 Seville HELP NEEDED
  62. Weird A/C air condition problem
  63. Size of O-rings in fuel line
  64. Fuel Filter Location.
  65. 94 Deville Boils Over after Engine Off
  66. Dexcool in a 4.9L???
  67. 1992 4.9 goes to open loop at HWY speeds.
  68. Bad Engines?
  69. fuel pump location (84 4100)
  70. car wont start (84 4100)
  71. Overhauling and Modifying a 1982 HT4100
  72. 92 deville bad head gasket selling?
  73. 92 deville please help
  74. New 4.9 problem, horrific idle, backfiring
  75. Oil Cooler...
  76. 83 eldorado with new reman engine and tranny timing / ping probs
  77. 4.1 to 4.7
  78. Car giving me fits
  79. 89 Seville idles at 2200
  80. help with codes
  81. 4.5 cranks but no start
  82. 4.9L Stalling out
  83. 'Service Engine Soon' Light on my 4.9 DeVille - Any ideas?
  84. Pistons for a 4.5L and 4.9L the same???
  85. 4.9 distributor help
  86. umm...help please!
  87. 84 coupe deville codes
  88. engine swap
  89. 1990 deville starter replacement
  90. TPS Enhancer
  91. What kind of spark plugs for the HT4100?
  92. Vehicle Data List, Can you spot the problem?
  93. changing belt
  94. 92 Deville - OIL IN COOLANT
  95. 94' sedan deville woes Heeellllllp.
  96. What are the troubleshooting steps for injectors/plugs/wires?
  97. 4.9 Engine Oil Cooler Line replacement
  98. INTERMITTANT "Missing" and rough running/idle
  99. Ppplllleeeeaaassseee Help!!!
  100. ok so maybe its the alternator
  101. engine coolant supplement
  102. Ford SVO Injectors, Can i use them?
  103. '85 Deville Engine Temp Fan Light
  104. If I disconnect the battery.....
  105. 4.9L distributor questions
  106. How to go into different parts of OBD?
  107. gas smell?
  108. 92 Deville Surging during idle!
  109. symptoms of a bad cat?
  110. ebay purchase question?
  111. Flowmaster 80 Series-I LOVE IT!
  112. Over Heating
  113. high throttle on start. Code 26
  114. Fram Air Hog-Test
  115. 4.9L Roller Rockers?
  116. '86 Fleetwood 75 FWD
  117. TPS Adjustment for 85 4.1 (RWD)
  118. where is the thing???!!!!!!????
  119. radiator removal and installation
  120. 92 deville "set timing mode"????
  121. Ahh!!!
  122. What to do to make car stop running rich?
  123. 92 deville clicking after shut off???
  124. Spark Knock, Continued....
  125. Throttle Body and Air CLeaner Housing
  126. Engine Dies...
  127. Quick PCV question
  128. reman Ht 4100 is in looking for reman tranny advice, sources, install, fluid etc.
  129. bogging 4.9 in a Fiero
  130. Hi - 89 Deville 4.5 Liter V8 in 84 Pontiac Fiero
  131. Overheat Problem
  132. '89 DeVille, ISP motor bounces
  133. How to tell if water pump is going out?
  134. Overheating Badly
  135. MAT Sensor location...
  136. Serpentine belt for 4.9 ('91 Deville)?
  137. sputtering
  138. Radiator leak
  139. 15 Amp ERLS blowing
  140. 94 deville fuel delivery prob. HELP!
  141. wtf
  142. loud tapping noise in the left bank sounds like from top end
  143. swap engine
  144. eric
  145. replacing a broke pulley
  146. Jrb
  147. 87 eldorado 4.1L in an 84 fiero - SES light ON
  148. so many codes!
  149. 91 Deville 4.9 with no power- Need Help
  150. 0.07 volts for ground???
  151. 87 Eldorado 4.1L
  152. type of oil
  153. ISC motor idle speed
  154. how do i remove the throttle body?
  155. got my 4.1 reman in but it wont fire up
  156. High RPM on Motor Start - 4.9
  157. 4.5 V8 Water in Oil
  158. 88 4.5 V8 Water In Oil
  159. Aftermarket 4100 Parts?
  160. coolant leak from timing cover?
  161. Hammer -vs- Fussy Starter
  162. bad thermostats, hopefully?
  163. 4.1 TPS sensor
  164. Strange engine/ecu problem
  165. Best motor oil for 4.9?
  166. 4.5 Coolant Problems, Leaking Fluid - but from where?
  167. simple 4.9 questions
  168. 4.9L Firing order + Cylinder location HERE!
  169. 4.1 Rough Idle
  170. Best (Worst) Air Filters to Use
  171. 4.9L performance upgrades?
  172. 4.1 to 4.5 swap
  173. How much for New Head Gaskets?
  174. new mat and coolent sensors
  175. rough idle and sputtering
  176. 4.1 exhaust manifold
  177. 4.9 Head Gasket
  178. problem with "service engine soon"
  179. Advance timing on 4.9
  180. What MPG for 87 Eldorado, 4.1?
  181. E048 EGR fault code how to fix?
  182. 4.9 And The Gas Mileage Sucks!!!
  183. Any way to disable the ses light?
  184. 95 deville tranny question
  185. 92' dies then restarts by its self
  186. ECM pinouts
  187. Dead 89 deville engine
  188. Going to be a long weekend
  189. A few questions for the Caddy Experts 4.9L
  190. old radiator cap problematic?
  191. 4.9 ltr
  192. 4.9 reliability :P
  193. Help With Code
  194. confused
  195. 4.9 Ltr Timing Belt?
  196. Drive ADL switch?
  197. spark plug question
  198. code ro15
  199. 92 Fleetwood 4.9 hesitation/code help
  200. 4.5 no start, no life. sorta familiar
  201. Yea another code ??
  202. 4.1 Operating Temperatures
  203. coolant leak
  204. A few questions regarding the 4.9
  205. code questions please...
  206. Throttle body bolt stripped out of intake manifold
  207. steering wheel will lock up and car cut off
  208. Help with 89 Sedan deVille codes...
  209. how good are the bottom ends on the 4.9?
  210. E98 code - help!!??
  211. 4.9L northstar
  212. Need help ... engine kicks, accelerates/revs itself
  213. '89 DeVille a/c not working
  214. HT4100 Stalling
  215. 4.9 oil consumption
  216. ht 4100 change over to 350 chevy
  217. Will 4.9 heads fit on a 4.1 block?
  218. Thinking about getting a new coil
  219. 87 Cadillac Seville ,4.1 with blown head gasket
  220. Hi. I need lots of help concerning the 4.9L. Thanks.
  221. timing a 4.5
  222. pulley bearing? serpentine belt not moving
  223. Hub on crankshaft
  224. Tackling Motor mount Replacement-92 Seville(4.9)
  225. 1. Diag Codes 2. Engine Stall
  226. squeek squeek .my speedo cable i think
  227. coolant in oil in my new motor
  228. coolant in oil
  229. Reconnecting Spark Plug Wires - 4.9L
  230. rough poor idle on 91 Seville STS 4.9 ideas?
  231. bbob???
  232. Better MPG with 87 Octane
  233. Preliminary tune-up
  234. car from hell
  235. 1988 Coupe Deville 4.5 ECM problem
  236. Please Help!!!
  237. Well, it cranked but...
  238. 4.9 heads on a 4.5
  239. 1990 fleetwood 4.5 fuel filter and thermostat location????
  240. 4.1 V6 and 4.1 V8
  241. Does the bars leak that comes in the gray bottle do the same thing as the tablets?
  242. 93 SDV trans question
  243. can anyone shine some light on me
  244. What's wrong with my 4100?
  245. What are some tricks to make the 4100 last a long time?
  246. hurt caddy
  247. torque specs for belt tensioner pulley
  248. Need trouble codes for '83 HT-4100 Eldo
  249. 93 loud knocking within engine, while in park
  250. ht4100