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)
krftwrk

Coolant Temperature Light Flashing after Tire Blowout

Recommended Posts

I had an unfortunate wintertime run-in with an enormous pothole at (US) interstate highway speeds (2000 Boxster). I dented the left rear rim pretty good and also blew the tire as a result. As soon as this happened, my Coolant Temp light started flashing at a slow speed. I've seen elsewhere the descriptions for the slow flash (i.e low coolant, coolant temp too high, or maybe engine compartment temp too high?). I'm somewhat new to this car (<9 mo. owner), so I'm not sure what I should check next. My coolant level is topped up just like usual. (I had the reservoir changed last fall). I see no leaks. The temp gauge is steady at 180° or so just like normal. Any ideas what I might have damaged when this happened? Is it happening on the left side a clue? I have a Durametric which I will connect when it warms up in a few days. Just curious what I might be up against. Thanks in advance.

Share this post


Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

I had an unfortunate wintertime run-in with an enormous pothole at (US) interstate highway speeds (2000 Boxster). I dented the left rear rim pretty good and also blew the tire as a result. As soon as this happened, my Coolant Temp light started flashing at a slow speed. I've seen elsewhere the descriptions for the slow flash (i.e low coolant, coolant temp too high, or maybe engine compartment temp too high?). I'm somewhat new to this car (<9 mo. owner), so I'm not sure what I should check next. My coolant level is topped up just like usual. (I had the reservoir changed last fall). I see no leaks. The temp gauge is steady at 180° or so just like normal. Any ideas what I might have damaged when this happened? Is it happening on the left side a clue? I have a Durametric which I will connect when it warms up in a few days. Just curious what I might be up against. Thanks in advance.

 

As the car must have taken a jolt when you hit the pothole, the plug connector on the temp sensor or the surge tank level sensor may have come loose.  Suggest checking them for a tight connections.

  • Upvote 1

Share this post


Link to post
Share on other sites

I believe a blink indicates low level, solid is high temperature, so check the level detector.  Also make sure you look into the reservoir, that plastic sight glass isn't a real good indication.

  • Upvote 1

Share this post


Link to post
Share on other sites

I believe a blink indicates low level, solid is high temperature, so check the level detector.  Also make sure you look into the reservoir, that plastic sight glass isn't a real good indication.

 

Four functions of the coolant warning light:

1. Engine coolant level too low

— light flashes slowly (0.5 Hz)

2. Engine compartment temperature too high

— light flashes slowly (0.5 Hz) (engine compartment blower might be faulty)

3. Engine coolant temperature too high

— light is lit; pointer on the right

4. Temperature sensor at water outlet faulty

— light flashes rapidly (1 Hz); pointer on the right

Note

The temperature warning in point three is indicated if the conditions "engine coolant temperature too high" and "engine coolant level too low" are present simultaneously 

(1Hz = 1 flash per second.  0.5Hz = 2 seconds per flash)

 

  • Upvote 1

Share this post


Link to post
Share on other sites

As the car must have taken a jolt when you hit the pothole, the plug connector on the temp sensor or the surge tank level sensor may have come loose.  Suggest checking them for a tight connections.

 

Just so I understand the terminology here… 

 

a. temp sensor: is that the sensor that i can find here in green?

pic1.jpg

 

 

b. the " surge tank level sensor". is that the wire that goes to the bottom of the coolant reservoir in the rear trunk like this one noted in yellow here?

 

pic4.jpg

From other places I've read that there is also the possibility that my "engine compartment blower" could be bad. (or one of the aforementioned sensors). Where is the location of the blower? 

Sorry for the noobie questions. Still learning. Thanks again.

Share this post


Link to post
Share on other sites

 

As the car must have taken a jolt when you hit the pothole, the plug connector on the temp sensor or the surge tank level sensor may have come loose.  Suggest checking them for a tight connections.

 

Just so I understand the terminology here… 

 

a. temp sensor: is that the sensor that i can find here in green?

pic1.jpg

 

 

b. the " surge tank level sensor". is that the wire that goes to the bottom of the coolant reservoir in the rear trunk like this one noted in yellow here?

 

pic4.jpg

From other places I've read that there is also the possibility that my "engine compartment blower" could be bad. (or one of the aforementioned sensors). Where is the location of the blower? 

Sorry for the noobie questions. Still learning. Thanks again.

 

 

A. Yes.

 

B. Yes.

 

The engine compartment fan assembly is in the engine bay, adjacent to the vent on the passenger's (U.S. model) side.  If you have access to the Durametric software, you can ask it to turn the fan on without the car running, and you should hear it.

  • Upvote 2

Share this post


Link to post
Share on other sites

 

A. Yes.

 

B. Yes.

 

The engine compartment fan assembly is in the engine bay, adjacent to the vent on the passenger's (U.S. model) side.  If you have access to the Durametric software, you can ask it to turn the fan on without the car running, and you should hear it.

 

Well, I'll be! JFP was right. The temp sensor checked out OK. The coolant reservoir sensor was the problem. The wire and connector were attached OK. But the sensor kind of goes into the bottom of the tank with a half turn. It had become dislodged from the tank and was just kind of hanging there. My guess is that when my mechanic installed the new tank last fall, he must not have securely screwed in the sensor and the pothole jolt was enough for it to finally come loose. I'm surprised it didn't fail sooner. 

Thanks everyone for the assistance and especially to JFP who was right on the money about where to look. Managed to swap out my air filter while I was checking the temp sensor, so double plus good. Warm weather coming soon! :) 

Best.

Edited by krftwrk

Share this post


Link to post
Share on other sites

 

 

A. Yes.

 

B. Yes.

 

The engine compartment fan assembly is in the engine bay, adjacent to the vent on the passenger's (U.S. model) side.  If you have access to the Durametric software, you can ask it to turn the fan on without the car running, and you should hear it.

 

Well, I'll be! JFP was right. The temp sensor checked out OK. The coolant reservoir sensor was the problem. The wire and connector were attached OK. But the sensor kind of goes into the bottom of the tank with a half turn. It had become dislodged from the tank and was just kind of hanging there. My guess is that when my mechanic installed the new tank last fall, he must not have securely screwed in the sensor and the pothole jolt was enough for it to finally come loose. I'm surprised it didn't fail sooner. 

Thanks everyone for the assistance and especially to JFP who was right on the money about where to look. Managed to swap out my air filter while I was checking the temp sensor, so double plus good. Warm weather coming soon! :) 

Best.

 

 

There are only a few things that it could be; glad you got it sorted.  :thumbup:

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Content

    • By OscarAH1W
      Has anyone noticed the dwindling options for the 295-30-18 Rear Tire on our Turbos (and GT3s)?  It is getting almost ridiculous that the choice is now PS2, Bridgestone, or P Zero.  Hankook made the Ventus V12 Evo in that size then discontinued it with the Evo2.  I found some Falken FK453s (which are great tires) but hear they are discontinuing that size.  Pilot SuperSport:  Nope.  Sumitomo Makes the HTR ZIII in our size but is it any good How about the Kumho Ecsta SPT?  Not many options, I am interested in others' experiences since it seems ridiculous to hang $2K worth of tires when you can get similar performance for half the price...
    • By nwGTS
      I am wiring indicators, horn and brights (for flash) to an OMP steering wheel hub with buttons to my 2012 997.2 GTS.  I need the wire diagram of the indicators and brights on the steering column so I know which wires to tap (horn is done already).
       
      Does anyone have this diagram or know where I can find it?
       
       
      Edit: Looks like i need the wire diagram for these two specific parts,1 and 3 in the embedded image.  3 is the switch would probably be the one I want.  1 is the control unit and would be helpful to have but redundant if I have 3 and I probably need 3 anyway in order to test any wiring done on 1.

    • By JasonStern
      Hi all,
      In the colder months, I run a set of 225/40-18 front, 265/35-18 back Boxster S rims on my 1999 C2. I purchased them with Kumho Ecsta ASX all-season tires, which are the popular budget all-season Boxster tire option. The rears have worn down to a point where, while I trust them in the dry and light rain, I'm a little skeptical about their traction in heavier rain.
      I live in northern Nevada where the weather is mostly dry, but the temperatures get cold, so traction in the 10-70 degree weather range is important. The tires need to be able to occasionally handle moderate wet roads. As far as snow goes, I have a Nissan Xterra which I drive whenever the weather report predicts snow, but there is that rare time where a light dusting may occur while I am working that I will need to drive in. So far, that hasn't happened in my 911, but it did in my previous Boxster. That said, a majority of the miles put on the tires will be in 30-60 degree dry weather, and two major drawbacks that I have experienced in the past from winter tires are significantly reduced traction and tire life.
      The front tires still have good traction, and thus the rear tires would be paired with Kumho Ecsta ASXs in the front. I have been happy with the Kumho Ecsta ASXs, but given that tires are significantly cheaper than a potential accident, I'd rather pay more for a better tire as insurance should the better tire be justified.
      So, my question is whether to go with a winter tire such as the Bridgestone Blizzak LM-60, go with an all-season tire such as the Michelin Pilot Sport A/S 3, or less likely, stick with the "not broken" Kumho Ecsta ASX? Does anyone have experience with the Bridgestone Blizzak LM-60? If so, how is the dry weather performance and tire wear? Does anyone have experience with the Michelin Pilot Sport A/S 3? If so, how do they behave in wet weather and low temperatures? I'm open to other tire options, but would prefer that they be available through TireRack as their distribution center is twenty miles outside of Reno so I can support a local (to me) business, and they even drop tires off to my local independent Porsche shop that doesn't mark their prices up should they mount and balance them.
      And, yes, I should have gotten a C4 to begin with, but I love my C2 and I seriously doubt my girl will let me buy another 996 unless it's an automatic cabriolet. :(
      Thank you,
      Jason Stern
    • By josimarlm1@gmail.com
      Planning a small overhaul of my 996 C2 Mk1 suspension/wheel/tires

      Current:
      Suspension: stock
      Wheels: OEM Sport Design 2 (bbs 2pc- wheels)(mk1 gt3 wheels)
      18x7.5 et50
      18x10 et65
      Tires: Sumitomo HTR Z III (225/40/18- 285/30/18)


      Plan:
      Suspension: H&R Street Performance Coilovers + H&R Sway Bars (front and rear)
      Wheels: OZ Ultraleggera
      19x8.5 et53
      19x11 et65
      Tire: Hankook Ventus V12
      235/35/19
      295/30/19

      Any thoughts on the new set-up, issues i may have? experiences with the coilovers,wheels, tires?
      With the increased wheel width I think the wheels will be flush with the fenders but if not are spacers even an option?- does anyone have this set up? need to roll fenders? pics?


      thanks for your feedback

    • By seahawkeye
      Time to replace my OEM summer tires (2007 C4S, got 32,300 miles out of them)--any recs for what to replace with?
      I'm trying to choose between Michelin Pilot Sport PS2 or Super Sport. The Super Sports have better ratings on tirerack but the PS2s are OEM. The Super sports are about $500 less than the PS2s for all four tires.
      They are both Y rated with similar load capacity.
      Anyone try the super sports? I've never been to the track but wouldn't rule this out in the future
×
×
  • 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.