Question about 1996 Toyota Camry
When I bypass the pcv valve its back to perfectly normal. It starts without having your foot on the pedal and stays idling just fine. But cleaning the pcv didnt fix it, buying a brand new pcv valve didnt fix it. But again, when I take the vacuum hose off of the pcv it starts and idles perfect. I unhooked a few sensors and tried each time but it still starts fine as long as your foot is on the gas pedal but as soon as foot is off that pedal, INSTANTLY it shuts off like you turned the key off.
First, try a new accelerator pump. They're less than $10 and easy to install. On the side of the carburator, near the linkage. It's simple a small rubber diaphragm.
Posted on Mar 15, 2009
could be the coil pack playing up ,or the computer not working properly ,very difficult to diagnose without the right software so i would suggest taking it to a dealer and see what they say
Posted on Jun 22, 2009
SOURCE: 94 camry. 2.2 fed emissions.
Before we both knock ourselves out with fuel injector testing. Hook up a Digital voltmeter (DVM) to upstream O2 sensor and lets see how she is burning. Remember positive lead of DVM to signal wire and negative lead to ground. Anything above 550 mV is rich anything below 350mV is lean. Be mindful that an exhaust leak the size of a pin hole in this region can cause a rough idle. A healthy reading should bounce between 550mV and 350 mV.
Next to test is O2 is working block off air in take making mixture rich and see what O2 says about it . Then pull off a vacuum hose (a lean condition) and see if DVM drops to 200to 300mV's.
Keep me posted.
Posted on May 10, 2010
Have the idle bypass valve checked, also called idle air control valve.
If that valve is stuck in the closed position, it's not allowing the fuel to bypass the throttle plate to keep it idling, resulting in stalling, but will keep engine running if the pedal is pushed down.
Posted on May 14, 2010
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