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| Thread ID: 104897 | 2009-11-12 01:29:00 | Car trouble, please help! | biolyte (15417) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 829367 | 2009-11-12 19:41:00 | Cut out all the abbreviation stuff Joe and put it in plain english. :) |
Trev (427) | ||
| 829368 | 2009-11-12 20:04:00 | should i just get a new battery and see what happens, cuz the battery is completly dead it doesnt hold a charge. | biolyte (15417) | ||
| 829369 | 2009-11-12 20:10:00 | Bio are you in NZ? is the car left hand drive does it have a carby or fuel injection? | prefect (6291) | ||
| 829370 | 2009-11-12 20:16:00 | no im not i live in canada and i believe it is fuel injected. I repeat, last night i got it boosted and it started ideling fine but when i put it into park it stalled, so i boosted it again and let it idle for a while then everytime i slowed down it would start to die, is the battery just no good or do i need a new alternator, let me know |
biolyte (15417) | ||
| 829371 | 2009-11-12 20:25:00 | Do things in this order 1. Charge old battery with battery charger (borrow buy steal) Every Canadian should have one the place is cold as hell and batteries dont like cold. 2. Buy a cheap multimeter from Canadian version of Wal Mart 3. Take battery to auto sparky for test if its rooted buy new one 3. Fit good battery to car 4. Run car and check voltage across battery with it running it should be around 14 volts Has the car been sitting without running for a long time? All this boosting or what we call in Nouvelle Zealande jump starting if battery rooted may cause grief to electronic components. |
prefect (6291) | ||
| 829372 | 2009-11-12 20:29:00 | the car has been sitting for a while. | biolyte (15417) | ||
| 829373 | 2009-11-12 20:31:00 | The petrol could be stale and sticking up the throttle body | prefect (6291) | ||
| 829374 | 2009-11-13 05:43:00 | If the TB (throttle body) was sticky, then the ISC (idle speed motor) would compensate IF IT COULD! My thought is that the ISC (idle speed motor) is sluggish, gummed up or carboned up so bad that it cannot get a decent seat on the bypass port it controls to by-pass the throttle body and compensate/adjust the idle speed . Let me see if I can find a decent article showing how to perform that service for you . BBS . But until then - try to recalibrate it like I said . Canadian cars should have the equivalent versions of US fuel control systems, never mind the emission controls which should also be the same . A dirty MAF (Mass Airflow Sensor) can also cause this same problem, now that you've given a little clearer info . It is a hot-wire device that measures the current that can get through a fine wire as the intake air pases by it in a metered orifice . If you want to try to clean it (a good idea with some reservations!) you must ONLY use MAF-wire cleaner and NOT CARB OR FI SPRAY! The MAF is located in the air intake tubing, right after the filter and before any throttle body device . It will look like a small screened device with either three or four wires going to it in a MOLEX-type plastic male/female plug assembly . Some info on the GM-ISC motor: GENERAL MOTORS IDLE SPEED CONTROL On older pre-OBD II cars, A code 11 indicates a problem in the idle air control circuit . On OBD II vehicles (1996 & newer), codes P505 to P509 indicate a fault with the idle speed control system . The diagnostic procedure involves disconnecting ISC motor, then starting the engine to see if the idle speed increases (it should) . Turn the engine off, reconnect IAC and start the engine again . This time the idle speed should return to normal . If it does, the problem is not in the IAC circuit or motor . Check for vacuum leaks or other problems that would affect idle speed . If the idle speed does not change when the IAC is unplugged, and/or does not return to normal after reconnecting the unit, use a test light to check the idle speed control solenoid wiring circuits while the key is on . The test light should flash on and or go from bright to dim on all four circuits if the PCM and wiring are okay (this would tell you teh fault is in the ISC motor) . If the test light fails to flash on one or more circuits, the fault is in the wiring or PCM . NOTE: This is one of the FEW places you can use a 12v test light on a computer-controlled device . Don't even try to use it anywhere else! Thumbnail #1 = MAF sensor || #2 = ISC (generic) |
SurferJoe46 (51) | ||
| 829375 | 2009-11-14 03:43:00 | I had erratic high idle on my Nissan, and removed the sensor from the MAF and cleaned it carefully (i.e. the fine wire), with a small artist brush and cleaner. This stabilized and reduced the idle. I think surfer joe mentioned to me in a previous thread about the pod filter being the culprit as it allows oil to coat the MAF wire - which it did. This article describes symptoms and how to clean a Nissan MAF (www.howstuffinmycarworks.com), (they also mention the hassle with after market filters as the cause) but may be applied for the MAF on your car (but minus the carb cleaner as suggested by surfer joe). |
kahawai chaser (3545) | ||
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