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Car Forum / Porsche / Porshe 944 / June 2006944 won't start
I have an 86 944. I just died on me one day, and now I can't start it. When it does start it runs fine, and I've checked just about everything. The battery is good, and so is the rest of the electrical system. The fuel system is fine, and the dme is in good working order. It seems like my alarm is stopping my car from starting, but the only problem is I'm not sure if my is even equipped with an alarm. It has the light, but I can't find the control unit, and the previous owner said it's only a dummie light, but the previous owner was also a dummie, so I don't think I can take his word for it. Can anyone help me or at least tell me exactly where to look for the alarm control unit. if it's an OEM alarm, there will be a key switch by the door, and an alarm control unit next to the DME >I have an 86 944. I just died on me one day, and now I can't start it. >When it does start it runs fine, and I've checked just about [quoted text clipped - 6 lines] >dummie, so I don't think I can take his word for it. Can anyone help me >or at least tell me exactly where to look for the alarm control unit. Bill www.wbnoble.com to contact me, do not reply to this message, instead correct this address and use it will iam_ b_ No ble at msn daught com  SignaturePosted via a free Usenet account from http://www.teranews.com The DME RELAY is most often the cause of interminent starting and stalling problems. First check that your fuel pump fuse gets power WHEN the engine is cranking. If not, then your DME RELAY (in the fuse box) is faulty. Replace it with newer version part No. starting 993. Regards, Martin I would bet money it's the DME Relay. Make a jumper as discussed on Clark's. If it starts with the jumper you will know for sure. http://www.clarks-garage.com/ > The DME RELAY is most often the cause of interminent starting and stalling > problems. [quoted text clipped - 3 lines] > Regards, > Martin > I would bet money it's the DME Relay. Make a jumper as discussed on Clark's. > If it starts with the jumper you will know for sure. [quoted text clipped - 8 lines] > > > >I've already replaced the dme relay, checked to see if the fuel pump was working, checked power to the ignition coil, replaced the battery, and by the way it won't even push start. 1. there is a pretty good troublehsooting flow chart in the manual - have you looked at it? 2. the old rule still applies, you need compression, spark, and fuel. so, check. do you have compression (something over 100 psi), do you have spark at the plug, and are the injectors squirting fuel. report answers and then we'll all argue about what is next. without that information it's all speculation >> I would bet money it's the DME Relay. Make a jumper as discussed on Clark's. >> If it starts with the jumper you will know for sure. [quoted text clipped - 8 lines] >> > >> >I've already replaced the dme relay, checked to see if the fuel pump was working, checked power to the ignition coil, replaced the battery, and by the way it won't even push start. Bill www.wbnoble.com to contact me, do not reply to this message, instead correct this address and use it will iam_ b_ No ble at msn daught com SignaturePosted via a free Usenet account from http://www.teranews.com My 1987 944 wouldnt start and it drove me nuts. Worse yet it sometimes DID start. IT WAS THE COMPUTER BRAIN in the car (under the passengers foot rest under the carpet) - common problem. Try knocking it a few times - sometimes that gets it to temporality work. Then you will know for sure. Since I resoldered all the larger connections inside the computer, my car has been running absolutely perfect. 250,000 miles - and I swear it runs like a new car. Signature______ joliett Mine didn't have a spark at the ignition coil. I used a timing light to check that, but I noticed something else. If it has a spark when it's trying to start, the tach will bounce until it DOES start. If you are having a spark issue, try the speed transmitter. It's essentially a piece right by the flywheel that tells the dme how fast the flywheel is moving. Pretty easy install too :) -Alex -1987 944 N/A > Mine didn't have a spark at the ignition coil. > [quoted text clipped - 9 lines] > -Alex > -1987 944 N/A I have spark, fuel, and air. My compression is fine. The car doesn't even want to try to start. I checked my computer and everything is sound. This is all basic stuff. I've checked the speed and reference sensors, all the relays, the computer itself, the ignition circuit, the fuel system, and the battery, and the starter. Not that the starter matters, because I can't push start it. I want to know more about the factory alarm, and does the car have to have the second key hole on the quarter panel if one is installed? The only method you can use to check the output from the speed and reference sensors is with an oscilloscope. Other tests are only abbreviated . See www.clarks-garage.com for output etc. From what you describe I would guess that one or both of the sensors is not positioned correctly. > The only method you can use to check the output from the speed and > reference sensors is with an oscilloscope. Other tests are only > abbreviated . See www.clarks-garage.com for output etc. > From what you describe I would guess that one or both of the > sensors is not positioned correctly. I'm not an idiot, i my speed and reference sensors are fine. Like i said, I already checked them!!! I found a box under my dash with 2 big circular things and a total of six wires going into it. If anyone knows what this thing is, I think it could help me. The wiring on it looks very shady. I'm going to re-wire it anyways, but I'd really like to know what i'm working with. aaah, joe - I guess we can't help you if you don't like the suggestions - you say you have compression, fuel and spark. I presume you therefore ran a compression test (results?), you removed the injector rail with the inectors and verified that they each squirt out a reasonable amount of fuel, and that you saw a spark jump the gap in #1 plug when #1 cylinder was near TDC --- are all these presumptions correct? if not, can you report the exact method for determining that you had "compression, spark, and fuel" - perhaps describing the method will allow someone to suggest where there is a mistake, because if you have those three things, with the right timing, the car will in fact do something, even if it doesn't run well. Finding mystery boxes could be an issue, but you should be able to look at the schematic and determine what they are for - as you said, you are not an idiot, so just look at the schematic and see what the mystery thing is - or if it isn't on the schematic, then report what it connects to and any markings/nomenclature on it. saying "a box with two big circular things" doesn't really constitute a technical description - at least provide dimensions and some other data - you could be describing a mickey mouse hat for all we can tell from the desctiption. >> The only method you can use to check the output from the speed and >> reference sensors is with an oscilloscope. Other tests are only [quoted text clipped - 8 lines] >could help me. The wiring on it looks very shady. I'm going to re-wire >it anyways, but I'd really like to know what i'm working with. Bill www.wbnoble.com to contact me, do not reply to this message, instead correct this address and use it will iam_ b_ No ble at msn daught com SignaturePosted via a free Usenet account from http://www.teranews.com |
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