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hugo kohl

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Everything posted by hugo kohl

  1. I replaced my water pump and thermostat at the same time as coolant tank so I don't see this as a problem and in any case, the car is not overheating, rather it is running at ideal temp. Im wondering if it could be the wires connected to the coolant tank sensor and will be checking these next.
  2. 99, c2, 120k Upon startup I get a red blinking light on my temperature gauge. Car has not been overheating, coolant level is good, engine compartment fan is good and I don't have any coolant leaks. I changed my coolant tank out about 6 months ago and everything has been fine since. Any suggestions?
  3. Thanks to all of you for several easy suggestions as to how to track this down. I'll post up as the problem reveals itself. Right now the battery is disconnected and I'm changing the water pump and thrermostat. It wont be until after I complete this task that I start tracking down the battery drain. I'm waiting on a 160* thermostat in the mail.
  4. 1999, 996 140k I think I have a problem with my battery discharging so much that the car wont start if I leave it sitting for more than 2 days. I cant find any obvious thing that might be draining it, ie, interior lights etc. Is there a procedure to detecting weather the alternator is charging or something is draining?
  5. 1999, 996, 140k I started out changing a leaking coolant reservoir tank. After completing this task I had misfire codes on all cylinders. After changing the plugs, plug tubes and coils the misfire codes started "roaming" around. After removing and re-seating the coils and their plugs several times the misfire codes went away and were replaced by intake temperature codes and roaming emission codes accompanied by a rough idle. I cleaned the idle control valve and for now the car is running well with no codes. I really enjoyed struggling my way through the exercise but have to wonder, Whats next? being able to get some great suggestions and experienced information was a tremendous help. Thanks Loren, Ahsai, brwilson, dbjoe996 for your guidance.
  6. My car is now re-assembled and the misfire codes have been replaced with new codes: P0102 MAF low voltage P0112 Intake temperature sensor P1319 misfire P1318 Cyl 6 emission related P1316 cyl emission related The MAF code was due to my disconnecting the MAF sensor. Upon startup I have a very low curb idle Approx 600 rpm If I disconnect the MAF the idle instantly rises to 1200 rpm and than drops to a normal 900 rpm. There is no obvious un-burnt fuel smell like before Even though the engine is idling very low, there seems to not be a misfire issue anymore. what diagnostic procedure or process should I follow now? I was thinking about cleaning or replacing the "idle speed air control valve"
  7. while reassembling the coil shield, then muffler on the passenger side of my car after changing spark plugs, tubes and coils I found this male plug dangling by itself in the passenger side of the engine compartment. It is connected the the same bundle that the MAF sensor plug comes from. After about 30 min of searching I cant find where it might go??? Any suggestions appreciated
  8. Ahsai, I just tried your suggestion.. I re seated the two coils that were giving misfire codes and restarted. This time I have no codes but did have a low idle rpm and had to play with the throttle to keep it running. After about 30 seconds of low rpm idle i disconnected the MAF. The idle went frpm 600 rpm to 1400 but hen lowered to regular 800 with no misfires. I repeated connecting and disconnecting MAF several times with identical results. After 5 min of idling and revving engine I still get no codes. Tomorrow am I'l reconnect the mufflers see what happens. I did expect to get a MAF code but it was never disconnected for more than 30 sec at a time. I appreciate the suggestion. I'll keep you posted as info presents.
  9. I haven't tried this yet. Loren advises to stop changing things in a random way and that the MAF is not part of the curb idle and comes into play after 4000rpm. I'm hoping for some step by step diagnostic procedure?
  10. Thanks for suggesting that. I went back and checked them all, and the electrical connections to all six coils are properly made as far as I can tell; as in, the male and female ends are properly seated and the protective boot is in place. In this last start-up the car idles properly for a few moments and then goes into a rough idle. By that I mean you can hear the engine missing, rpm drops to the point where you have to play with the throttle to keep it running and you can smell unburned gas. However, after another short interval the rpm rises to normal range (900 rpm) for a few seconds and then goes rough again and I get the flashing cell and error codes telling me about misfires. My conclusion is that I've got bad electrical connections or bad coils somewhere. Is there a way to do a simple diagnostic that can determine if a coil is bad? What I'm down to trying is removing all the coils and plugs and testing the continuity with an ohm meter. Loren suggested that there are any number of things that can cause a misfire after changing plugs but I'm running out of solutions to try. Any advice is much appreciated.
  11. I removed, inspected and reinstalled the #'s 1 and 3 coils and also added fresh dialectic grease to the end of the boots. Its worth noting that I never felt a "click" seating any of the coils. Upon close inspection, the contact between the coil and the spark plug is a coil push spring. I measured the distance between the end of the spring and the plug and they do make contact. The conductive grease should help insure proper conductivity. Upon re-start I did not re-install the mufflers. I did however get a new set of error codes for the #4 & #6 cylinder misfires with a flashing cel. I then removed and reinstalled the #'s 4 & 6 coils and restarted and now get codes for the #'s 6 & 3 cylinders. could these problems originate at the power supplies feeding the individual coils?
  12. I doubt that the fuel lines got any dirt in them but its hard to know unless the injectors can be diagnosed as clogged. My gut is improperly seated coils but Ill need to get it back up off the ground and broken down to reseat the #1 & #3 coils. It smells, literally, like unburned gas is passing out the exhaust. I was also thinking of starting without the MAF connected. I inspected around the MAF for possible air leaks but dont find any.
  13. The car runs rough. It feels and sounds like its not firing on all cylinders. the rpm is low (400 rpm) and will stall if you let it. There is a strong exhaust smell of un-burned gas. codes are: P0300 random multiple cylinder misfire P0301 cylinder 1 misfire P0303 cylinder 3 misfire I used Beru Ultra Spark Plug; 14FGR 6KQUs and torqued to 22 lbs as per instructions. ill double check the coil packs for proper seating on the plugs as well as but at this point I don't think they are cracked as I installed those screws with locktite and firmly "snugged".
  14. 1999, 996, 117k miles Due to leaking I recently changed my coolant reservoir tank, which involved disconnecting and re connecting 2 fuel lines.. Upon restarting the car I had a rough idle and CEL. I purchased a $100b code reader, read a bunch of stuff online and decided to clean the MAF sensor, change the air filter, spark plugs, plug tubes and coils. upon today's startup I get an erratic/rough/low rpm idle, flashing CEL and the following codes: P0102 mass air flow circuit low P1319 misfire emission related P1318 misfire cylinder 6 emission related P1315 misfire cylinder 3 emission related P1313 misfire cylinder 1 emission related Somehow I went from a leaky tank to some bad stuff based on a do-it-myself moment. I wonder if the coil packs might not be perfectly seated? I'm thinking a new mass air flow sensor and all four O2 sensors need replacing?? Please advise. Hugo Kohl
  15. 1999, 996, c2  117k miles


    Due to misfiring and codes I replaced all six spark plugs and spark plug tubes as well as all 6 coil packs  While I was at it I replaced the coolant reservoir tank as it was looking pretty ugly.  everything went fairly well, however,


    upon startup I get an erratic/rough/low rpm idle and the following codes:


    P0102  mass air flow circuit low

    P1319 misfire emission related

    P1318  misfire cylinder 6 emission related

    P1315 misfire cylinder 3 emission related

    P1313 misfire cylinder 1 emission related


    I removed the MAS and sprayed it off with MAF cleaner  



    I'm thinking a new mass air flow sensor and all four O2 sensors need replacing??  

    Please advise.


    Hugo Kohl

  16. you are correct that I removed coolant tank, airbox, sai pump, coolant hoses and two fuel lines. everything went back into place fairly easily. I am concerned that I didnt have this misfire or these codes before the tank swap. It could be that I did spill some coolant on that side of the engine while removing the tank. It is also true that the coil on the #2 cylinder is in horrible shape compared to the others...again, probably because past servicer chose to ignore it due to its difficulty to access. I cant find where the coil wires are attached at the other end. I would like to check and make sure those ends are properly connected. Is there any advice on tracing that?
  17. Ahsai Thanks for your suggestion. I already checked this and there was no leak there. Ive read other posts concerning these codes and examined the 6 spark plug coils. The one in the middle on the driver side is in horrible condition. I't was noticeably in way worse shape than the others. Ive removed it and ordered a new set of plugs and coils. I did notice though that this coil and plug are noticeably more difficult to remove than the others because of structural elements in the way. It looks like several mechanics, over the years simply passed it by because of the difficulty in dealing with it. I hope this solves my problem but I'm open to additional suggestions.
  18. 1999 996, 120k miles I just changed the leaky coolant resivor tank and air filter. when I restartted the cat I get a rough idle and the following codes: P1315 ignition coil 4 primary feedback curcuit P0305 cylinder 5 misfire also misfires on cylinders 4 and 6 I think these cylinders are on the opposite side of where the coolant take is. I can only assume I've loosened something. any help appreciated. thanks, Hugo
  19. I have a 1999 996 c2 with 140k miles and a ck engine light. I'd like to purchase an electronic diagnostic tool that will read codes from a vehicle from 1999. I have not seen one listing this year. Please advise
  20. Loren, Thanks so much for the advice and guidance with this. I'll do this.
  21. Hello Loren, Thanks for the reply. The thing that is unusual about it is that it has never done this before. I also get an intermittent sound from the engine compartment when I start the car. It is a "screeching" sound that makes me think there is something slipping or rattling around. I checked the serpentine belt and it seems fine.
  22. I have a 1999 C2 with 140k miles with a recent CEL accompanied by a "whirring" noise. Upon startup I get a whirring noise that lasts approx 1 minute before it stops. At first I thought it was it was the engine compartment fan but after checking I that is not it. Please chime in if you have any suggestions as to what I should check. thanks
  23. It worked fine for me...car started right up. The other things that might be worth looking at are faulty throttle control valve/dirty control valve...try hosing out with throttle control valve cleaner spray
  24. Did it work Hugo? Anyone know where exactly this is located? I am having the same issue with my Boxster.
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