: Northstar Engines and System Technical Discussion



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  1. Turbo Charged 99 STS
  2. What tools do you need for a hg/engine pull job
  3. headgasket need used insert kit
  4. Recent Stud Kit Customers - READ THIS PLEASE
  5. HELP My mechanic says I have carboned lifters
  6. What color are stock gaskets?
  7. Dumb head gasket question
  8. Resetting Timing after Head Gasket job.
  9. Cadillac Engineers please help us!
  10. how do i change my idle
  11. head gasket help!!!!!!
  12. Transmission cooling
  13. Idle at 3000 RPM HELP!!!
  14. added power?
  15. northstar crank sensors
  16. 2000 DTS plugs and hoses - tough job, I think
  17. FPR acting up
  18. 98+ STS brake upgrade?
  19. Spark plugs
  20. Email conversation with HEAL-A-SEAL
  21. O2 Sensors
  22. 01 SLS w/ Cracked Block - Need Cincy Area Mechanic
  23. 06 DTS crank seal leaking
  24. 4t80e side cover drain
  25. '98 STS stumbles and misses (NO CEL)
  26. MAP sensor keeps going bad - 94 N*
  27. 2004 dhs starting problem
  28. Attention All Northstar Technicians- New Northstar Drilling / Tapping Machine
  29. headgasket being repaired
  30. High mileage oils
  31. P0420 code
  32. Wot?
  33. You'll never guess what I broke today
  34. 95 STS fluctuating rpm and slight bogging while driving
  35. 1993 Cadillac sts 4.6 idle fluctuating
  36. SLS engine and trannie in a STS?
  37. Air conditioning compressor clutch bearing
  38. Manifold Blowoff Leaking - parking break stuck
  39. 110,000 miles, what else should be done along with head gaskets?
  40. "Tic Tic Tic" sound on 02 SLS
  41. Flashing SES/P0300
  42. Working on mama's Caddy. Need help with O2 Sensor
  43. Head Gasket?
  44. Investors needed. Big time.
  45. thermostat housing gasket? 99 sts
  46. New England area Northstar mechanics? (Head Gaskets)
  47. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  48. That's a lot of smoke! (exhaust)
  49. Mobile 1 Clean High Mileage
  50. Chocolate Milk in the oilpan
  51. Heater Core Inlet Connector O-Ring Leak
  52. Breakthrough for anyone with bad exhaust cams
  53. 96 Aurora 4.0
  54. Idle Too Low P0506 New Throttle Body?
  55. Northstar mechanic on Long Island?
  56. 4t80E shift solenoid part #
  57. B0149
  58. Code P119
  59. HeadGasket Repaired - cost $1500 - but more problems?...
  60. 95 Eldo headgaskets?
  61. Only overheats when the AC or the heat is on....
  62. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  63. Aftermarket Temp. Gauge
  64. Coolant Supply Line
  65. Idles rough after being started in the morning
  66. Best way to clean the engine bay?
  67. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  68. Tricky Coolant Leak
  69. Coming back home
  70. 2000 DHS exhaust smoking and running poor
  71. 4 Engine Questions
  72. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  73. Any thoughts on this...
  74. tap for time serts
  75. Just bought a 98 Deville, was overheating, am I paranoid?
  76. 208 at 40+ 212 at <40
  77. low oil pressure
  78. Batman's Northstar
  79. Another Wont crank issue
  80. Woohoo...Head gasket repair is done
  81. 1998 Deville acceleration slip
  82. Steering joint bolt
  83. My bone stock '98 STS pulled a 14.95 in the 1/4
  84. Weird Noise
  85. Heartland High Mileage Oil Changer Review
  86. 95 sls n* solenoid clicking
  87. Interesting find
  88. Valve cover bolts???
  89. Timing mark clarification
  90. Engine in the car repair... how many gaskets?
  91. Front hydraulic motor mount
  92. I can't get the CV joint to separate from the Trans
  93. 1993 Caddillac Eldorado - Timing Chain Issue
  94. Stud Kit Success!!
  95. Ways to increase performance?
  96. Radiator leaks and engine runs rough, no codes
  97. Ethanol Blends
  98. 98 Eldorado Starting Problems
  99. Problems removing head dowels
  100. Another visit to the track
  101. 95 vs 99 Northstar
  102. Tuning up the engine.
  103. Head Gasket Repair At Your Location!
  104. Head Gasket Paranoia
  105. catalyst converter replaced
  106. 93 STS Lots of smoke after fillup
  107. Exact oil filter wrench for 1996 Seville SLS
  108. new northstar
  109. Super Noob needs help overheating
  110. Nitrous Help: 01 DTS
  111. Head gasket removal, best practices
  112. 01 deville o2's locations?
  113. Head stud kit
  114. Documenting a swap: N* 4.6 / 97 STS
  115. 2005 DTS Twin Turbo project??
  116. No pcm data
  117. No pcm data?
  118. WIll a 98 vin 9 motor go into a 94 STS
  119. another newbie HG question
  120. NEW - 2002 Head Gasket Failure - Best Fix...
  121. Failed Smog Emissions Northstar
  122. What could it be?
  123. Exchange fluids how often?
  124. Tuning thread. Disappointed, but I understand.
  125. looking to buy a Caddy
  126. AC Delco platinum plug gap settings for N*
  127. how do i get my car to northstar preformance, uh cheaply?
  128. Engine 'misses' at stoplights
  129. where to get my head gasket repaired?
  130. Engine Shaking
  131. 4.6 Prevention and maintenance for longer life IE head gaskets.
  132. How to properly switch from red to green in a 2000 STS
  133. Water Pump Issue
  134. Lucas Oil Stabilizer
  135. Rough idle and low speed chug
  136. barS headgasket repair, has anyone tried it?
  137. Secondary Air Injection Check Valve... Bent?
  138. 2000 STS motor mount help?
  139. Oil pressure dummy light flickers...
  140. Head Bolts...
  141. Slight stumble, no codes
  142. 97 Deville wont start in the morning
  143. Stud Kit Help
  144. A kitten caused my Serpentine Belt to come off
  145. Check Coolant Level
  146. Cleaning Heads and Block
  147. Over Heating... HELP!!!
  148. 2001 deville rough idle
  149. engine grounds
  150. manifold blowoff
  151. sealant for blown heads?
  152. 1994 STS Overheating (I think)...
  153. Block Identification Numbers
  154. Snapping noise when coming to a stop..Answered Finally!!!
  155. Overheating Eldorado Help
  156. need some help
  157. 05' STS. Little help with P0102 please
  158. 2000 DTS P0300 code
  159. Head gasket repair
  160. P041 1994 deville concours
  161. Quick Oil Question
  162. rough idle, no codes, rough start
  163. coolant leak
  164. STS Radiator Hose Replacement
  165. 95 Eldorado ETC - Cooling system
  166. power steering line: o-ring?
  167. broken bolt in oil pan
  168. Water pump & crossover gasket - $$$$
  169. Help Me Please
  170. Rad Cap PSI was wrong
  171. Coolant Leak. Where's it coming from?
  172. Water pump Purge line?
  173. 5w30 or 0w30
  174. Destroying a N* Engine
  175. N* engine removal - newbee
  176. 02 DHS overheating
  177. TCC Stuck Off
  178. No clue what to do. Northstar blues
  179. problem with map sensors
  180. 2001 caddy sts seville tranny
  181. What is going on with the car?
  182. Spark Plug Wires
  183. "Hush" or "Gasp" Before Expected Throttle Response
  184. my 93 ETC Eldorado N* has a question for you guys
  185. Which spark plugs to buy?
  186. Thoughts on Dex-Cool and Head Gaskets
  187. 2001 cadillac deville small hesitations
  188. Normal Operating Temperature?
  189. Intermittent starting issue 97Seville SLS
  190. Trouble finding exhaust leak 99 Deville Y motor
  191. Is 235 too hot for a N*star on hilly roads?
  192. Spark Plugs ACDELCO or somthign els ?
  193. Good mechanics to fix head gasket in Oceanside, California area
  194. rough idle, only when in gear and brake on
  195. The first head gasket failure - 1 out of around 90 or so
  196. Tranny problems?
  197. how to install serpentine belt on 98 concours
  198. engine swap
  199. Why high fuel pressure?
  200. 1997 Northstar low speed hesitation and noise
  201. 2001 DeVille DHS / North Star motor losing power
  202. Air-Dam / Belly Splash Guard importance on cooling your N*
  203. Make Your Own Damn Motor Mount
  204. cooling fans inop p01660
  205. Hard shifting 1-2 Help!
  206. Fabricated Torque Strut for the 2000+ Northstar
  207. Horrible Engine Bucking 93 N* Allante
  208. 1998 Seville STS Performance Engine Build - STAGE I
  209. My pulley melted
  210. 01 Deville issues, no codes, no check engine light
  211. '96 Deville Coolant Change
  212. Overheating
  213. White smoke after changing starter (by removing intake manifold)
  214. No current codes but...
  215. N* Powered Camaro
  216. Strange coolant/heat issue 99 STS
  217. 1998 STS engine full of mystery sludge?!
  218. Rough idle-stumble on accel
  219. 95 Eldorado 4.6L Engine stalls
  220. Oil in intake manifold 4.6 1993
  221. 98 Deville Concours Preformance Exhaust???
  222. Engine year compatibility
  223. Sucessful Northstar head gasket repair in a bottle
  224. PCM 09354896 code DCHJ
  225. 1997 4.6 eldorado up hill over heats
  226. fuel injector ohms
  227. 93 sts fuel rail removal tools
  228. Air ride compressor
  229. Overheating??
  230. Codes P0122 and P1122...
  231. Motor mount replaced!! WTF!!!!!
  232. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  233. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  234. Long road trips good for the Northstar?
  235. headgaskets a 2nd time?
  236. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  237. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  238. Car not turning over
  239. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  240. Transmission issue
  241. spark plugs
  242. Yearly engine oil changes really necessary?
  243. Overheating problem
  244. maybe you all know more
  245. What Oil For Northstar Cams and Flat Tappets?
  246. 93 seville sts fuel rail
  247. rear main seal
  248. 93-99 Camshaft picture needed
  249. Seville 03 shaking problems after tune-up.
  250. is it the head gasket again?