Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

JFP in PA

Moderators
 View Profile  See their activity

  • Posts

    8,732

  • Joined

  • Last visited

  • Days Won

    199

 Content Type 

Everything posted by JFP in PA

  1. JFP in PA
    Touchy subject. The TPMS is a federally mandated safety system; altering it, or turning it off could result in the party that told you how to do it being held liable if you got into an accident afterwards.
  2. JFP in PA
    Try board sponsor Sunset Porsche Parts, they have an excellent online section for searching parts.
  3. JFP in PA
    You need to look behind the water pump at the engine case wall.
  4. JFP in PA
    I believe the Gates pump has a metal impeller: I am concerned that the pump was replaced because of overheating, not because the pump had failed or was making noise. The question is why was it overheating? At this juncture, if the car was in my shop, I would pull the water pump and look at both the impeller and the wall of the engine case. If the case is tore up, you are chasing your tail trying to get the system to work. As for the reviews of the pump, some "complain" the impeller is composite, others complain it is metal, so it sounds like they could go either way. In any case, we ONLY use the factory water pumps, which are all composite impellers, and work well, unlike several aftermarket brands we have looked at. Unfortunately, many aftermarket bits for Porsches are really junk; water pumps, surge tanks, and AOS units are great examples of what not to buy. We have seen several fail right out of the box. Yes, they are a few bucks cheaper, but after some people have gone through two or three units in quick succession, that few bucks looks like a really bad deal...…..
  5. JFP in PA
    Something 'organic" is wrong here, so let's start with the basic elements of the system: You said you pulled the thermostat and tested it, correct? Do you have the paper work from the water pump install? Can you see the water pump and verify that it is new? Is it possible to contact the shop that did the work and find out why they replaced the pump and if the original and replacement pump had a metal or composite impeller? People have a tendency to replace the composite impeller pumps in these cars with aftermarket metal impeller pumps because they are cheaper and people think they are better, which is a big problem. The clearance between the back of the impeller and the engine case is only a couple thousandth's of an inch in order to get proper coolant flow, and Porsche used composite impellers specifically because as the pumps age, the shaft begins to wobble and the impeller hits the engine case. If the impeller is composite, the impeller breaks up and fails; if the impeller is metal however, it begins machining away the engine case, creating a much larger gap, and renders any new pump, regardless of impeller type, unable to move the coolant in sufficient volume to keep the engine cool. Unfortunately, there is no coming back from this a the engine would have to come out and apart to spray weld up the are and then be machined to the correct tolerance's, which is too expensive to be realistic.
  6. JFP in PA
    Sounds correct, but obviously if you have no heat from a heater that has full flow all the time, there has to be air in the system, or the doors on the HVAC system are not moving correctly. Pull the cover off on the passenger's side next to the battery, start the car and let it warm up, you should be able to feel both heater lines and see if they get hot.
  7. JFP in PA
    Distilled water will not change anything. If you don't have heat, you still have air in the system.
  8. JFP in PA
    Just be aware of two points: You are disabling a federally mandated safety item; in many states that is grounds for failing the car at its annual inspection. Your insurance company can play games with you if you have an accident such as rear ending someone of bumping into an inanimate object. You purposely disabled a mandated safety feature designed to prevent such things, you could end up on the hook for all the damage.
  9. JFP in PA
    Yes, the air is compressible. It all depends upon where the air is; if it is in the engine it should come out easily, if it is in the radiators, it will try to push a lot of water ahead of it.
  10. JFP in PA
    That's because you have a lot of air in the system. Try draining the tank with a turkey baster and then pulling a vacuum SLOWLY...…..
  11. JFP in PA
    We do this all the time when DIY coolant changes don't work out; it can be done, but you have to raise the vacuum level slowly in stages to allow the air to come out.
  12. JFP in PA
    You need to throttle the vacuum and bring the level up slowly, the system is trying to "burp" and you need to bring the vacuum up in stages so the system can expel the air without pushing the coolant ahead of it. Ultimately, you should reach 25-27 inches of vacuum when the system is free of air.
  13. JFP in PA
    1. The answer is no. As long as the vacuum tool is above the liquid level, it will not pull coolant out. I would suggest bringing the vacuum level up slowly as the system will "burp" which could splash coolant onto the vacuum unit. 2. The bleeder has O-rings on it that can be replaced, and you can buy a complete new unit as well. DO NOT use aftermarket pieces, they have proven to be of poor quality.
  14. JFP in PA
    I'd check the markets in your area, what they sell for here is irrelevant.
  15. JFP in PA
    It would be a bit of a nightmare to convert a non switchable exhaust to a switchable version. The factory has bypass pipes welded inside the muffler to facilitate the two pathways, the system you have does not, so they would have to cut it apart and weld them in. I think that would end up costing you more than just buying the real thing and selling the unit you have.
  16. JFP in PA
    You need an air compressor to operate the Uview and create vacuum. If you pressured the tank and the level dropped, you just proved you have air in the system. Air is compressible, coolant is not, which is why the level changed. The system should hold pressure at 18 PSIG, if it drops lower, it is leaking. Bleeder valves are known to do this.
  17. JFP in PA
    We use a Joma high pressure test kit, all stainless and Kevlar that is capable of reading 2,000 bar. Sells for about $750.
  18. JFP in PA
    The recommended way of filling these cars with coolant is under vacuum, it is the way the dealer and any well equipped shop would do it specifically because of these issues. I would suggest shortcutting all the top off and run it folderol and take it to someone with a Uview vacuum filling system; once connected, it will all be over in about 5 min.
  19. JFP in PA
    Correct, it is warm water returning from the radiators.
  20. JFP in PA
    Let's just say it is not the most common approach, but it does work well when everything is up to snuff.
  21. JFP in PA
    According to Porsche's parts system, you should be a 996-618-605-00 (2001, 2.7L, manual trans). The ME7.2 is the firmware inside the box.
  22. JFP in PA
    If it is a 2001 2.7L, it should use an ME 7.2 DME, but that DME must match the immobilizer and keys, all of which must be coded together.
  23. JFP in PA
    Welcome to RennTech The DME, immobilizer, and keys all have to match (come from a single vehicle), or be recoded by a dealer to match. The DME version also has to match the original chassis as they changed with model years. What year is the vehicle?
  24. JFP in PA
    Be careful with the Harbor Freight fuel pressure tester, it is NOT designed for the pressures your DFI runs at, which can be as high as 3,000 PSIG
  25. JFP in PA
    This should help, it shows how the coolant flows in your car (red is hot out, blue cool returning):
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.