: Northstar Engines and System Technical Discussion



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  1. 01 SLS w/ Cracked Block - Need Cincy Area Mechanic
  2. 06 DTS crank seal leaking
  3. 4t80e side cover drain
  4. '98 STS stumbles and misses (NO CEL)
  5. MAP sensor keeps going bad - 94 N*
  6. 2004 dhs starting problem
  7. Attention All Northstar Technicians- New Northstar Drilling / Tapping Machine
  8. headgasket being repaired
  9. High mileage oils
  10. P0420 code
  11. Wot?
  12. You'll never guess what I broke today
  13. 95 STS fluctuating rpm and slight bogging while driving
  14. 1993 Cadillac sts 4.6 idle fluctuating
  15. SLS engine and trannie in a STS?
  16. Air conditioning compressor clutch bearing
  17. Manifold Blowoff Leaking - parking break stuck
  18. 110,000 miles, what else should be done along with head gaskets?
  19. "Tic Tic Tic" sound on 02 SLS
  20. Flashing SES/P0300
  21. Working on mama's Caddy. Need help with O2 Sensor
  22. Head Gasket?
  23. Investors needed. Big time.
  24. thermostat housing gasket? 99 sts
  25. New England area Northstar mechanics? (Head Gaskets)
  26. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  27. That's a lot of smoke! (exhaust)
  28. Mobile 1 Clean High Mileage
  29. Chocolate Milk in the oilpan
  30. Heater Core Inlet Connector O-Ring Leak
  31. Breakthrough for anyone with bad exhaust cams
  32. 96 Aurora 4.0
  33. Idle Too Low P0506 New Throttle Body?
  34. Northstar mechanic on Long Island?
  35. 4t80E shift solenoid part #
  36. B0149
  37. Code P119
  38. HeadGasket Repaired - cost $1500 - but more problems?...
  39. 95 Eldo headgaskets?
  40. Only overheats when the AC or the heat is on....
  41. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  42. Aftermarket Temp. Gauge
  43. Coolant Supply Line
  44. Idles rough after being started in the morning
  45. Best way to clean the engine bay?
  46. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  47. Tricky Coolant Leak
  48. Coming back home
  49. 2000 DHS exhaust smoking and running poor
  50. 4 Engine Questions
  51. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  52. Any thoughts on this...
  53. tap for time serts
  54. Just bought a 98 Deville, was overheating, am I paranoid?
  55. 208 at 40+ 212 at <40
  56. low oil pressure
  57. Batman's Northstar
  58. Another Wont crank issue
  59. Woohoo...Head gasket repair is done
  60. 1998 Deville acceleration slip
  61. Steering joint bolt
  62. My bone stock '98 STS pulled a 14.95 in the 1/4
  63. Weird Noise
  64. Heartland High Mileage Oil Changer Review
  65. 95 sls n* solenoid clicking
  66. Interesting find
  67. Valve cover bolts???
  68. Timing mark clarification
  69. Engine in the car repair... how many gaskets?
  70. Front hydraulic motor mount
  71. I can't get the CV joint to separate from the Trans
  72. 1993 Caddillac Eldorado - Timing Chain Issue
  73. Stud Kit Success!!
  74. Ways to increase performance?
  75. Radiator leaks and engine runs rough, no codes
  76. Ethanol Blends
  77. 98 Eldorado Starting Problems
  78. Problems removing head dowels
  79. Another visit to the track
  80. 95 vs 99 Northstar
  81. Tuning up the engine.
  82. Head Gasket Repair At Your Location!
  83. Head Gasket Paranoia
  84. catalyst converter replaced
  85. 93 STS Lots of smoke after fillup
  86. Exact oil filter wrench for 1996 Seville SLS
  87. new northstar
  88. Super Noob needs help overheating
  89. Nitrous Help: 01 DTS
  90. Head gasket removal, best practices
  91. 01 deville o2's locations?
  92. Head stud kit
  93. Documenting a swap: N* 4.6 / 97 STS
  94. 2005 DTS Twin Turbo project??
  95. No pcm data
  96. No pcm data?
  97. WIll a 98 vin 9 motor go into a 94 STS
  98. another newbie HG question
  99. NEW - 2002 Head Gasket Failure - Best Fix...
  100. Failed Smog Emissions Northstar
  101. What could it be?
  102. Exchange fluids how often?
  103. Tuning thread. Disappointed, but I understand.
  104. looking to buy a Caddy
  105. AC Delco platinum plug gap settings for N*
  106. how do i get my car to northstar preformance, uh cheaply?
  107. Engine 'misses' at stoplights
  108. where to get my head gasket repaired?
  109. Engine Shaking
  110. 4.6 Prevention and maintenance for longer life IE head gaskets.
  111. How to properly switch from red to green in a 2000 STS
  112. Water Pump Issue
  113. Lucas Oil Stabilizer
  114. Rough idle and low speed chug
  115. barS headgasket repair, has anyone tried it?
  116. Secondary Air Injection Check Valve... Bent?
  117. 2000 STS motor mount help?
  118. Oil pressure dummy light flickers...
  119. Head Bolts...
  120. Slight stumble, no codes
  121. 97 Deville wont start in the morning
  122. Stud Kit Help
  123. A kitten caused my Serpentine Belt to come off
  124. Check Coolant Level
  125. Cleaning Heads and Block
  126. Over Heating... HELP!!!
  127. 2001 deville rough idle
  128. engine grounds
  129. manifold blowoff
  130. sealant for blown heads?
  131. 1994 STS Overheating (I think)...
  132. Block Identification Numbers
  133. Snapping noise when coming to a stop..Answered Finally!!!
  134. Overheating Eldorado Help
  135. need some help
  136. 05' STS. Little help with P0102 please
  137. 2000 DTS P0300 code
  138. Head gasket repair
  139. P041 1994 deville concours
  140. Quick Oil Question
  141. rough idle, no codes, rough start
  142. coolant leak
  143. STS Radiator Hose Replacement
  144. 95 Eldorado ETC - Cooling system
  145. power steering line: o-ring?
  146. broken bolt in oil pan
  147. Water pump & crossover gasket - $$$$
  148. Help Me Please
  149. Rad Cap PSI was wrong
  150. Coolant Leak. Where's it coming from?
  151. Water pump Purge line?
  152. 5w30 or 0w30
  153. Destroying a N* Engine
  154. N* engine removal - newbee
  155. 02 DHS overheating
  156. TCC Stuck Off
  157. No clue what to do. Northstar blues
  158. problem with map sensors
  159. 2001 caddy sts seville tranny
  160. What is going on with the car?
  161. Spark Plug Wires
  162. "Hush" or "Gasp" Before Expected Throttle Response
  163. my 93 ETC Eldorado N* has a question for you guys
  164. Which spark plugs to buy?
  165. Thoughts on Dex-Cool and Head Gaskets
  166. 2001 cadillac deville small hesitations
  167. Normal Operating Temperature?
  168. Intermittent starting issue 97Seville SLS
  169. Trouble finding exhaust leak 99 Deville Y motor
  170. Is 235 too hot for a N*star on hilly roads?
  171. Spark Plugs ACDELCO or somthign els ?
  172. Good mechanics to fix head gasket in Oceanside, California area
  173. rough idle, only when in gear and brake on
  174. The first head gasket failure - 1 out of around 90 or so
  175. Tranny problems?
  176. how to install serpentine belt on 98 concours
  177. engine swap
  178. Why high fuel pressure?
  179. 1997 Northstar low speed hesitation and noise
  180. 2001 DeVille DHS / North Star motor losing power
  181. Air-Dam / Belly Splash Guard importance on cooling your N*
  182. Make Your Own Damn Motor Mount
  183. cooling fans inop p01660
  184. Hard shifting 1-2 Help!
  185. Fabricated Torque Strut for the 2000+ Northstar
  186. Horrible Engine Bucking 93 N* Allante
  187. 1998 Seville STS Performance Engine Build - STAGE I
  188. My pulley melted
  189. 01 Deville issues, no codes, no check engine light
  190. '96 Deville Coolant Change
  191. Overheating
  192. White smoke after changing starter (by removing intake manifold)
  193. No current codes but...
  194. N* Powered Camaro
  195. Strange coolant/heat issue 99 STS
  196. 1998 STS engine full of mystery sludge?!
  197. Rough idle-stumble on accel
  198. 95 Eldorado 4.6L Engine stalls
  199. Oil in intake manifold 4.6 1993
  200. 98 Deville Concours Preformance Exhaust???
  201. Engine year compatibility
  202. Sucessful Northstar head gasket repair in a bottle
  203. PCM 09354896 code DCHJ
  204. 1997 4.6 eldorado up hill over heats
  205. fuel injector ohms
  206. 93 sts fuel rail removal tools
  207. Air ride compressor
  208. Overheating??
  209. Codes P0122 and P1122...
  210. Motor mount replaced!! WTF!!!!!
  211. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  212. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  213. Long road trips good for the Northstar?
  214. headgaskets a 2nd time?
  215. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  216. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  217. Car not turning over
  218. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  219. Transmission issue
  220. spark plugs
  221. Yearly engine oil changes really necessary?
  222. Overheating problem
  223. maybe you all know more
  224. What Oil For Northstar Cams and Flat Tappets?
  225. 93 seville sts fuel rail
  226. rear main seal
  227. 93-99 Camshaft picture needed
  228. Seville 03 shaking problems after tune-up.
  229. is it the head gasket again?
  230. Problems with starting the engine
  231. Adding an Electric water Pump 95 Northstar
  232. 1995 northstar for sale *LOCKED*
  233. After WOT Car smells strong of sulfur , rotten eggs
  234. Dexool Questions
  235. 2002 caddy deville
  236. Limp. Mode help
  237. Lifter starting to tap and needs replacing,
  238. Reg oil or Synthetic oil
  239. Coolant Shooting Out
  240. Random light miss during constant hwy cruising
  241. Which PCM??
  242. Fuel Injector O-Rings- Where go?
  243. air in cooling system
  244. Best oil and spark plugs for the northstar 4.6L
  245. Enginge doesn't crank
  246. Help!! Engine idling with hiccups
  247. Tach
  248. the day has come: headgasket
  249. '99 Seville STS
  250. What are the differences between 99> and 00< motors?