| Poster |
Message |
 Malibu
 |
 Astro külma mootoriga ei tööta õieti?
Tere! tegu siis chevy astroga 4,3 119kw TBI mootor. Probleem on selline et masina külma mootori pöörded on olematud, niikui käigu sisse tõmbad sureb välja. Ära sai vahetatud lambajalg, tühikäigu klapp ja kontrollitud ka veel vaakumvoolikud. Aga probleem on ikka alles. On kellelgil juhuslikult sama viga esinenud ja mis on olnud haiguseks?
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| 14.10.2008 at 16:42 |
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astro94
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Astro külma mootoriga ei tööta õieti?
kontrolli temperatuuri andur ka ära
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Astro 94a 5,7 V8 müüdud
huvid läinud metsa poole ;)
igapäevaseks kärutamiseks euro Chevy ja jaapani Fjord |
| 14.10.2008 at 16:59 |
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Astro-97
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Astro külma mootoriga ei tööta õieti?
lambdavahetusega kaasneb 43m tunnis sõitu kusagil 2km e. siis miski imelik 68km/h et aju tunneks ära uue signaali. uuel on karbil lausa selline õpetus
ja iac klapil oli ka mingi kord süüte sisse ja väljakeeramisel, et asi tunneks ära. kuskil siin foorumis oli sellest kunagi juttu
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CB (Ch19 FM), PMR (446.155), vahest ka 8AM. |
| 14.10.2008 at 23:22 |
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Malibu
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Astro külma mootoriga ei tööta õieti?
sain eile uue tembi anduri kätte ja nooh selle vahetus polegi nii kerge kui esmapilgul paistis  aga noh siis on vähemalt üks asi jälle kindel. ja noh üks loll küsimus veel et mis vigurivänt see IAC veel on. olen veel üsna võhik usakate peale ja eriti pritse süsteemi kohapealt |
| 15.10.2008 at 17:21 |
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Vanaisa
Moderator |
Astro külma mootoriga ei tööta õieti?
The Idle Air Control is a little stepper motor that moves a pintle in and out of a hole in the throttle body, and allows air to bypass the throttle blades, and enter the intake manifold. This is required to allow the car to idle when the throttle blades are completely closed (as they should be). The PCM plays with the IAC motor to keep the idle at spec, 800rpm for M6's and 650rpm for A4's. The ScanMaster reads the "position" of the valve motor, which can range from "1" to "255". At idle, you should see roughly "20" to "40" (this is fomr my M6, idling at 800rpm). And, it should be steady. Any lower and you probably have a vacuum leak, or the throttle return stop screw on the throttle body is preventing the blades from fully closing. If you see numbers higher than this at idle, it is possible you have a dirty IAC motor pintle which is not moving correctly, or plugged air passages leading to the IAC motor. If you have installed a throttle boy airfoil, it is possible it is blocking air flow through the opening that supplies air to the IAC system.
When you start to drive, the IAC value will start to rise. This is done in order to keep enough air flowing into the manifold that if you suddenly let off on the throttle, and let the blades fully closed, there will be enough air to keep the motor from stalling, and provides air to minimize pollutants. The counts I have seen under cruising and WOT conditions are in the range of 60 - 100.
The IAC motor is located at the base of the throttle body, on the passenger side. The PCM stores the "learned" idle position, so that it can return to this value quickly, in order to control idle. This stored value can be "lost" if the power to the PCM is lost, and idle may hunt a bit on startup until the value is relearned.
ehk siis lihtsamalt - tühikäigu mootor
edit: siin juttu erinevatest anduritest ja mida nad teevad |
| 15.10.2008 at 17:28 |
1 edit. Last edited 15.10.2008 at 17:30 by Vanaisa (Moderator)
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