Interesting.
You may need a wiring diagram for the engine.
Unplugging the regulator turns off the alternator which should not affect the ignition system. Unless it is over charging somehow. Or the alternator load on the engine is causing a missfire to be worse.
Its possible you have a ground problem somewhere too.
SOURCE: Toyota 02 is stalling, won't idle
Check the voltage of battery with voltmeter.. It is sometimes possible that if voltage of battery drops and jump start is needed, your computer will only charge to the last voltage that was recognized which would be when jumped...Try and charge the battery if possible I would actually suggest that you have your battery tested at local auto parts store and if it is presumed in good condition ,let them charge for you to max capacity . If battery has been tested and labeled as no good replace if necessary... Oh, and first thing you should do is make sure your positive and negative battery connections are clean and tight...if this didnt fix problem please give more info on what was found when advice above was followed...Good Luck!!!!
SOURCE: 2002 Toyota Tundra Stalls
The throttle body needs cleaning. It has some carbon build up, and when the battery went dead the computer lost its learned values, one of which is base throttle position. Now its reset back to factory specs, not accounting for a dirty throttle body. Seen it a million times
SOURCE: 1998 GMC Sierra- runs rough then stalls when
had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!
SOURCE: 1994 toyota corolla has a runs rough at idle and
I have a similar problem with one of my Toyota Corollas. It's a 95 model with the 1.8L engine (7A-FE, automatic). But unlike yours, it has plenty of power while running. Here's what it does. Occasionally the engine misses. Sometimes it will die. This is most likely to happen when you start the car and put it in reverse and start rolling without giving the engine time to adjust. I've been told by some customers that it will die sometimes when coming to a stop. But this has never happened when I drive it. I don't think it's a fuel issue because the car runs just fine when it's running.
Here's what I've tried so far:
So far there is no change in the problem.
What I plan to do next:
After that I have no idea what to do next if the problem persists. The check engine light is not on so I don't think there are any error codes. Will let you know.
Frank
Frank's Friendly Cars Maui Car Rental
www.MauiCarRental.biz
SOURCE: i am not getting power to my fuel pump
on a lot of ford products there is a switch that goes from the fuel pump to the inside of one of the bedsides.
what this is, is a shock switch that turns the fuel pump off if it absorbs a hit.
its a really dumb safety feature but its effective.
there is a red button on it that u have to press to make it active again.
sometimes they just trip for no reason.
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