jburgess55

I have a 1994 Toyota Camry. In the last few days it has started to occassionally die while idling or coasting down a hill. It always starts right back up. No trouble codes are being stored and it seems to run just fine other than that. Any ideas on what would make it die and what can I do to fix it??? It is a 2.2, 4 cyl. auto XLE 4 door.

g17jimmy

My 1992 camry was doing a similar thing, when coasting the engine would surge, it only cut off once that I can remember. I took it to a mechanic to get the A/C fixed and asked him to check that out at the same time and he adjusted the idle and the problem has gone away, but it's idling too high now(1200 without a/c 1500 with a/c) so I'm taking it back to him later today.

-jc

Toysrme

g17jimmy that's because the idle isn't adjustable... The car idles at whatever the ECU decides it wants to idle at.

You can adjust the throttle plate angle at rest, but the ECU will compensate with the Idle Control Valve. The Air-Flow Meter's have an idle bypass screw to set the A/F ratio at low throttle (Idle), but you have to drill the AFM housing out to get to the plug (It's perminantly sealed at the factory as soon as it's set). Even then that jsut adjusts the low angle A/F ratio, the ECU will compensate & run what it wants to with the ICS.

You can put a resistor on the Coolant temp sensor, making the ECU think it runs colder than it is - which will add up to 4% more fuel (Cold enrichment), and raise the RPM.


In short... It's impossible to actually adjust the idle, your mechanic was lieing to you.












jburgess55 take the idle control valve & EGR valves off & clean them. If it doesn't get better troubleshoot ignition problems (Spark, wires, distributor & cap, timing)

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Bossman

How long has it been since you've changed your fuel filter? Personally, I changed mine every 30,000 miles when I owned my 92 4-cyl Camry.