Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [ENGINE CONTROL FS]
STEP
INSPECTION
ACTION
27
Note
• The following test is for stall concerns with
A/C on. If other symptoms exists, go to next
step.
Ves Go to next step.
Connect pressure gauges to A/C low and high
pressure side lines.
Turn A/C on and measure low side and high
side pressure. Are pressure within
specifications?
<sr 0 7 -1 0 REFRIGERANT PRESSURE
CHECK
No
Check follows:
• Refrigerant charging amount.
• A/C pressure switches.
• Additional fan operation.
• A/C relay.
28
Disconnect vacuum hose between purge
solenoid and intake manifold from purge
solenoid side. Plug opening end of vacuum
hose.
Start engine.
Is engine stall eliminated?
Yes Check if purge control solenoid sticks to open.
Check evaporative emission control system.
No Go to next step.
29 Is air leakage felt or heard at intake air system
components while racing engine to higher
speed?
Yes
Repair or replace.
No Go to next step.
30 Check engine condition while tapping EGR
valve housing. Does the engine condition
improve?
Yes Replace EGR control valve.
No
Go to next step.
31 Is engine compression correct? Yes Check for valve timing.
No Check for cause.
32 Verify test results. If okay, return to diagnostic index to service any additional symptoms.
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