ΛΙΓΟ ΠΡΙΝ ΤΗΝ ΜΕΓΑΛΗ ΑΠΟΦΑΣΗ
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Mακαρι να ηξερα ρε Αλεξανδρε....Μακαρι...θελει λιγο ψαξιμο...Πριν αλλαξω το μοτερ η πλεξουδα δεν ειχε πειραχτει καθολου...Γτ στο προηγουμενο μοτερ ειχα κανει rebuild..δηλαδη ο κορμος ηταν πανω και δεν πειραξα πλεξουδα...Το στανταρ ειναι οτι τα κολπα τα ξεκινησε με το που το εβγαλα απτο συνεργειο,και αφου το αμαξι ηταν ακινητο 3 μηνες περιπου..Αλλαξε ο ηχος,Πιο αγριος και με σκασιματα η εξατμιση σε καθε αλλαγη και στο αφημα του γκαζιου,και με τα μπερδεματα στα χαμηλα...
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Δες και αυτό
Iv'e been chasing down an intermittent stumble/hesitation for awhile. The car never threw a code, but would occasionally hesitate around 3K- 4K rpms. I can see the AFR go lean when it does it. I checked all the sensors, but all were good. Seemed like the secondary air system was the culprit since I noticed that occasionally I would also get this sudden and massive compression braking on deceleration (secondary air injection also operates on decel). I checked everything: pump, relay, current sensor, vac. cannister, both valves, hoses, wiring, ECM - all checked out fine. Finally I decided that either the vac operated diaphram valve (which is at the back of the intake mainfold) or the vac solenoid valve (which controls the vac. diaphram valve) must be getting sticky. Turns out its the vac solenoid valve, even though it checked out fine per Helm's and on the bench with a 12V power supply.
Here's an easy way to see if the vac solenoid valve is causing hesitiation/stumbling problems: disconnect the vac line that goes to the diaphram valve and disconnect the air supply line at the diaphram valve also. This will will effectively stop the secondary air from entering the exhaust manifold and will keep the exhaust system sealed at the diaphram valve. The secondary air system will still operate, but the air will just blow out under the hood. Take a test drive and if the stumbling/hesitation goes away, then the vac solenoid valve is probably getting sticky.
Iv'e been chasing down an intermittent stumble/hesitation for awhile. The car never threw a code, but would occasionally hesitate around 3K- 4K rpms. I can see the AFR go lean when it does it. I checked all the sensors, but all were good. Seemed like the secondary air system was the culprit since I noticed that occasionally I would also get this sudden and massive compression braking on deceleration (secondary air injection also operates on decel). I checked everything: pump, relay, current sensor, vac. cannister, both valves, hoses, wiring, ECM - all checked out fine. Finally I decided that either the vac operated diaphram valve (which is at the back of the intake mainfold) or the vac solenoid valve (which controls the vac. diaphram valve) must be getting sticky. Turns out its the vac solenoid valve, even though it checked out fine per Helm's and on the bench with a 12V power supply.
Here's an easy way to see if the vac solenoid valve is causing hesitiation/stumbling problems: disconnect the vac line that goes to the diaphram valve and disconnect the air supply line at the diaphram valve also. This will will effectively stop the secondary air from entering the exhaust manifold and will keep the exhaust system sealed at the diaphram valve. The secondary air system will still operate, but the air will just blow out under the hood. Take a test drive and if the stumbling/hesitation goes away, then the vac solenoid valve is probably getting sticky.
