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OldCadTech last won the day on November 15

OldCadTech had the most liked content!

About OldCadTech

  • Rank
    CaddyInfo Reader

Profile Information

  • Gender
  • Location
    Washington State

Previous Fields

  • Car Model and Year
    1998 Seville STS - 2002 Seville STS
  • Engine
    Northstar 4.6L V8 (LD8/L37)

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  1. Bulging lower radiator hose

    They wear from the inside.
  2. Oil Leak Fixed - Motor Purr

    Basically, it chemically breaks down / softens the seals - see barczy01's post above for the final result. Better to stop using it now and hope for the best.
  3. Battery revisited 2006 DTS

    If the battery charge rate is insufficient when the vehicle is being driven, then the "NORMAL" parasitic draw is too much for the battery to handle when sitting for an over-niter. Once battery voltage drops to 9.6v nothing happens after that, the rule of thumb is that the parasitic draw should be no more than 1/4 of the reserve capacity of the stock fully charged battery in mA (i.e. stock battery is 120 min reserve capacity, maximum draw is 30 mA). If battery voltage is below that, reserve capacity is reduced proportionally AND max draw is reduced as well. IF your charging system AND battery are properly tested and are verified to be "normal" THEN do a parasitic draw test. One more thought for you to consider; Okay 2 thoughts 1) An automotive battery, with the exception of a deep cycle RV "style" battery, is NOT designed to be heavily discharged and recharged. Most "car" batteries will fail from frequent discharge and recharge cycles alone. Also, where you live plays a significant role in battery longevity. When I was working in the Phoenix, AZ area the heat killed MOST batteries in 2 years. In Oregon and Washington it is not unusual to see original equipment batteries still going strong after 7-10 years. 2) If you fix the car and the battery fails in a few weeks, Momma will not be happy and IT WILL be all your fault.
  4. Battery revisited 2006 DTS

    It is not normal for the charging system to vary voltage. KHE had a similar problem recently... Sorry, I didn't make that question very clear. I was referring to parasitic load not starter current draw. From what you are experiencing I would recommend taking the Deville to someone who can diagnose the charging system. It sounds like the generator is only charging the battery intermittently.
  5. Battery revisited 2006 DTS

    Sorry, I'll have to ask a few questions first. 1) Which thread(s) are you referring to? 2) Do you own a 2006 DTS? 3) Have you added any after-market accessories? 4) Have you LOAD tested the battery in the vehicle you're having the problem with? 4a) Have you tested the charging system? 4b) Is it charging more than 13 volts? 4c) How old is the battery? 5) Are the battery cable ends and bolts free of corrosion? 6) Do you have a Digital Volt Ohm Meter (DVOM) to do the current draw tests?
  6. Very true statement. Also, even though you may not feel it miss, the computer can still "detect" it. The PCM breaks it down in fractions of a second. The MIL will flash until the catalyst damaging condition is no longer present THEN the MIL will stay on steady. If the catalyst damaging misfires exceed 2 the PCM will disable TCC. Have someone with a Tech 2 scan it and verify which cylinder or cylinders is causing the code.
  7. Disconnect the battery negative cable for about 30 mins and restart the Eldo and see if it changes...
  8. My DeVille Got Hit

    I agree, best to fix the 96 and then shop for the Eldo. Too bad ya didn't live a little closer, I have an 02 Seville that will be looking for a new home soon.
  9. My DeVille Got Hit

    THAT's what I thought would happen 'cept for the part about the 02 Eldo....
  10. I suggest he spend the diag time to have it scanned with a Tech 2.
  11. Mailbag: fuel injection ahead of supercharger?

    Thanks, I was familiar with the old school SC and the EFI under the SC but I must have been locked in the closet on the FI on top of the SC. I was trying to picture Port FI. Throttle body perhaps... Quite a project from the sounds of it. Good luck
  12. The catalytic converter does not cause poor fuel mileage. Catalytic converter damage results from rich fuel mixtures, which is poor fuel mileage. If the cat is subjected to rich fuel/air mixtures long enough they will clog and restrict the exhaust, requiring catalytic converter replacement.