Question about Toyota Camry
94 Camry's battery slowly died while driving on hwy. AutoZone charged it overnight & it worked great for 2 hours or so, until it started to die at every red light when my foot was OFF the gas pedal! If i gave it gas it drove fine, but even if I took my foot off the gas for more than 4 seconds it started to lose the radio and the battery dash light would turn on and headlights would turn off! So i had to constantly put it in neutral and pump the gas pedal at every stop! AutoZone said they tested the alternator & it was fine! Is it an issue with the idle?? How do I fix that?
More questions than answers here Emmy. Did AutoZone test the battery too.? And what about checking for stored codes in the control module. In short you need to test or retest, battery, alternator & check for stored codes. Only then can you have enough info to make any informed suggestions. On most cars with electronic fuel injection, if the voltage or current is insufficient, the car will cut out so if the battery is weak & lights etc are on at idle, the low speed output from an alternator testing good at higher revs may cause a stall w/o giving it some gas. Also there's other sensors like the TPS (throttle position sensor) which, if failing, would definitely cause bad idle. Also being a '94, the stored codes take an older style code reader & are less informative than after '96 but they should be checked. Bon chance!
Posted on Dec 26, 2013
I would get another opinion on the alternator. There are tests that I am sure that autozone did not and cannot run. One is a load test, This would indicate if the battery is getting any electricity from the alternator under loadm diodes in the alternator could be failing. There is no way to adjust the RPM. IT should be around 800 on an automatic tranny in drive.
Posted on Dec 26, 2013
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Posted on Jan 02, 2017
The instructions for installing a new alternator usually read to fully charge the battery (12.3 - 12.8 volt range). Otherwise, the alternator will be damaged when it initializes. I have seen some extreme damage result from installing a new alternator with a low-charge battery. The torque required to turn an alternator when damaged in this scenario is unbelieveable!
Posted on May 02, 2009
This is extremely common :)
With time your throttle body gets gummed up with oily residue from the PCV system. As this happens, the computer adapts to the restriction it causes in the throttle body.
When you unhook the battery, these learned values are lost and the default settings for idle control are used. Unfortunately the default settings are no longer sufficient to keep the idle correct with it all gummed up.
Take your intake hoses off the throttle bodies and clean the insides (open the throttle plates for better access) with a rag and some brake parts cleaner or throttle plate cleaner, available from your local parts store.
Reassemble and start the car, your idle problems should be gone immediately.
Posted on Sep 16, 2009
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