: Northstar Engines and System Technical Discussion



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  1. ATF Question...
  2. cooling fans come on at what temp?
  3. add torque struts(dog bones) to 99 seville
  4. Turbo Charged 99 STS
  5. What tools do you need for a hg/engine pull job
  6. headgasket need used insert kit
  7. Recent Stud Kit Customers - READ THIS PLEASE
  8. HELP My mechanic says I have carboned lifters
  9. What color are stock gaskets?
  10. Dumb head gasket question
  11. Resetting Timing after Head Gasket job.
  12. Cadillac Engineers please help us!
  13. how do i change my idle
  14. head gasket help!!!!!!
  15. Transmission cooling
  16. Idle at 3000 RPM HELP!!!
  17. added power?
  18. northstar crank sensors
  19. 2000 DTS plugs and hoses - tough job, I think
  20. FPR acting up
  21. 98+ STS brake upgrade?
  22. Spark plugs
  23. Email conversation with HEAL-A-SEAL
  24. O2 Sensors
  25. 01 SLS w/ Cracked Block - Need Cincy Area Mechanic
  26. 06 DTS crank seal leaking
  27. 4t80e side cover drain
  28. '98 STS stumbles and misses (NO CEL)
  29. MAP sensor keeps going bad - 94 N*
  30. 2004 dhs starting problem
  31. Attention All Northstar Technicians- New Northstar Drilling / Tapping Machine
  32. headgasket being repaired
  33. High mileage oils
  34. P0420 code
  35. Wot?
  36. You'll never guess what I broke today
  37. 95 STS fluctuating rpm and slight bogging while driving
  38. 1993 Cadillac sts 4.6 idle fluctuating
  39. SLS engine and trannie in a STS?
  40. Air conditioning compressor clutch bearing
  41. Manifold Blowoff Leaking - parking break stuck
  42. 110,000 miles, what else should be done along with head gaskets?
  43. "Tic Tic Tic" sound on 02 SLS
  44. Flashing SES/P0300
  45. Working on mama's Caddy. Need help with O2 Sensor
  46. Head Gasket?
  47. Investors needed. Big time.
  48. thermostat housing gasket? 99 sts
  49. New England area Northstar mechanics? (Head Gaskets)
  50. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  51. That's a lot of smoke! (exhaust)
  52. Mobile 1 Clean High Mileage
  53. Chocolate Milk in the oilpan
  54. Heater Core Inlet Connector O-Ring Leak
  55. Breakthrough for anyone with bad exhaust cams
  56. 96 Aurora 4.0
  57. Idle Too Low P0506 New Throttle Body?
  58. Northstar mechanic on Long Island?
  59. 4t80E shift solenoid part #
  60. B0149
  61. Code P119
  62. HeadGasket Repaired - cost $1500 - but more problems?...
  63. 95 Eldo headgaskets?
  64. Only overheats when the AC or the heat is on....
  65. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  66. Aftermarket Temp. Gauge
  67. Coolant Supply Line
  68. Idles rough after being started in the morning
  69. Best way to clean the engine bay?
  70. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  71. Tricky Coolant Leak
  72. Coming back home
  73. 2000 DHS exhaust smoking and running poor
  74. 4 Engine Questions
  75. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  76. Any thoughts on this...
  77. tap for time serts
  78. Just bought a 98 Deville, was overheating, am I paranoid?
  79. 208 at 40+ 212 at <40
  80. low oil pressure
  81. Batman's Northstar
  82. Another Wont crank issue
  83. Woohoo...Head gasket repair is done
  84. 1998 Deville acceleration slip
  85. Steering joint bolt
  86. My bone stock '98 STS pulled a 14.95 in the 1/4
  87. Weird Noise
  88. Heartland High Mileage Oil Changer Review
  89. 95 sls n* solenoid clicking
  90. Interesting find
  91. Valve cover bolts???
  92. Timing mark clarification
  93. Engine in the car repair... how many gaskets?
  94. Front hydraulic motor mount
  95. I can't get the CV joint to separate from the Trans
  96. 1993 Caddillac Eldorado - Timing Chain Issue
  97. Stud Kit Success!!
  98. Ways to increase performance?
  99. Radiator leaks and engine runs rough, no codes
  100. Ethanol Blends
  101. 98 Eldorado Starting Problems
  102. Problems removing head dowels
  103. Another visit to the track
  104. 95 vs 99 Northstar
  105. Tuning up the engine.
  106. Head Gasket Repair At Your Location!
  107. Head Gasket Paranoia
  108. catalyst converter replaced
  109. 93 STS Lots of smoke after fillup
  110. Exact oil filter wrench for 1996 Seville SLS
  111. new northstar
  112. Super Noob needs help overheating
  113. Nitrous Help: 01 DTS
  114. Head gasket removal, best practices
  115. 01 deville o2's locations?
  116. Head stud kit
  117. Documenting a swap: N* 4.6 / 97 STS
  118. 2005 DTS Twin Turbo project??
  119. No pcm data
  120. No pcm data?
  121. WIll a 98 vin 9 motor go into a 94 STS
  122. another newbie HG question
  123. NEW - 2002 Head Gasket Failure - Best Fix...
  124. Failed Smog Emissions Northstar
  125. What could it be?
  126. Exchange fluids how often?
  127. Tuning thread. Disappointed, but I understand.
  128. looking to buy a Caddy
  129. AC Delco platinum plug gap settings for N*
  130. how do i get my car to northstar preformance, uh cheaply?
  131. Engine 'misses' at stoplights
  132. where to get my head gasket repaired?
  133. Engine Shaking
  134. 4.6 Prevention and maintenance for longer life IE head gaskets.
  135. How to properly switch from red to green in a 2000 STS
  136. Water Pump Issue
  137. Lucas Oil Stabilizer
  138. Rough idle and low speed chug
  139. barS headgasket repair, has anyone tried it?
  140. Secondary Air Injection Check Valve... Bent?
  141. 2000 STS motor mount help?
  142. Oil pressure dummy light flickers...
  143. Head Bolts...
  144. Slight stumble, no codes
  145. 97 Deville wont start in the morning
  146. Stud Kit Help
  147. A kitten caused my Serpentine Belt to come off
  148. Check Coolant Level
  149. Cleaning Heads and Block
  150. Over Heating... HELP!!!
  151. 2001 deville rough idle
  152. engine grounds
  153. manifold blowoff
  154. sealant for blown heads?
  155. 1994 STS Overheating (I think)...
  156. Block Identification Numbers
  157. Snapping noise when coming to a stop..Answered Finally!!!
  158. Overheating Eldorado Help
  159. need some help
  160. 05' STS. Little help with P0102 please
  161. 2000 DTS P0300 code
  162. Head gasket repair
  163. P041 1994 deville concours
  164. Quick Oil Question
  165. rough idle, no codes, rough start
  166. coolant leak
  167. STS Radiator Hose Replacement
  168. 95 Eldorado ETC - Cooling system
  169. power steering line: o-ring?
  170. broken bolt in oil pan
  171. Water pump & crossover gasket - $$$$
  172. Help Me Please
  173. Rad Cap PSI was wrong
  174. Coolant Leak. Where's it coming from?
  175. Water pump Purge line?
  176. 5w30 or 0w30
  177. Destroying a N* Engine
  178. N* engine removal - newbee
  179. 02 DHS overheating
  180. TCC Stuck Off
  181. No clue what to do. Northstar blues
  182. problem with map sensors
  183. 2001 caddy sts seville tranny
  184. What is going on with the car?
  185. Spark Plug Wires
  186. "Hush" or "Gasp" Before Expected Throttle Response
  187. my 93 ETC Eldorado N* has a question for you guys
  188. Which spark plugs to buy?
  189. Thoughts on Dex-Cool and Head Gaskets
  190. 2001 cadillac deville small hesitations
  191. Normal Operating Temperature?
  192. Intermittent starting issue 97Seville SLS
  193. Trouble finding exhaust leak 99 Deville Y motor
  194. Is 235 too hot for a N*star on hilly roads?
  195. Spark Plugs ACDELCO or somthign els ?
  196. Good mechanics to fix head gasket in Oceanside, California area
  197. rough idle, only when in gear and brake on
  198. The first head gasket failure - 1 out of around 90 or so
  199. Tranny problems?
  200. how to install serpentine belt on 98 concours
  201. engine swap
  202. Why high fuel pressure?
  203. 1997 Northstar low speed hesitation and noise
  204. 2001 DeVille DHS / North Star motor losing power
  205. Air-Dam / Belly Splash Guard importance on cooling your N*
  206. Make Your Own Damn Motor Mount
  207. cooling fans inop p01660
  208. Hard shifting 1-2 Help!
  209. Fabricated Torque Strut for the 2000+ Northstar
  210. Horrible Engine Bucking 93 N* Allante
  211. 1998 Seville STS Performance Engine Build - STAGE I
  212. My pulley melted
  213. 01 Deville issues, no codes, no check engine light
  214. '96 Deville Coolant Change
  215. Overheating
  216. White smoke after changing starter (by removing intake manifold)
  217. No current codes but...
  218. N* Powered Camaro
  219. Strange coolant/heat issue 99 STS
  220. 1998 STS engine full of mystery sludge?!
  221. Rough idle-stumble on accel
  222. 95 Eldorado 4.6L Engine stalls
  223. Oil in intake manifold 4.6 1993
  224. 98 Deville Concours Preformance Exhaust???
  225. Engine year compatibility
  226. Sucessful Northstar head gasket repair in a bottle
  227. PCM 09354896 code DCHJ
  228. 1997 4.6 eldorado up hill over heats
  229. fuel injector ohms
  230. 93 sts fuel rail removal tools
  231. Air ride compressor
  232. Overheating??
  233. Codes P0122 and P1122...
  234. Motor mount replaced!! WTF!!!!!
  235. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  236. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  237. Long road trips good for the Northstar?
  238. headgaskets a 2nd time?
  239. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  240. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  241. Car not turning over
  242. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  243. Transmission issue
  244. spark plugs
  245. Yearly engine oil changes really necessary?
  246. Overheating problem
  247. maybe you all know more
  248. What Oil For Northstar Cams and Flat Tappets?
  249. 93 seville sts fuel rail
  250. rear main seal