quick question, my engine ran crappy Options

[95CelicaST]

My starter died at the beginning of February, so I replaced it, but in doing so I disconnected the battery, then for a while after that my car ran crappy. I thought it might have been my airflow sensor reading too much air and trying to compensate with more gas. then it stopped.

What I Think---- the computer might not have been reading my CAI and something was screwed up there. Then once it worked out all the bugs it ran fine.

Think so? ar am I an idiot.... I wouldn't rule out either

Matt

[Rjb23]

If your battery is unplugged for a while it resets your ECU and your ECU has to relearn what your engine needs. If you have an auto there is a relearn procedure for it in the toyota manual, if a manual you pretty much just drive it normally and it does it on its own.

[erics1one]

Or try this...
http://www.6gc.net/index.php?action=howto&itu=33

[Rjb23]

Or try this...
http://www.6gc.net/index.php?action=howto&itu=33
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Why would you do this? This is straight from the toyoto shop manual.

COMPUTER RELEARN PROCEDURES
1994 Toyota Celica
GENERAL INFORMATION
Computer Relearn Procedures
All Models
* PLEASE READ THIS FIRST *
The following general procedures are to be used if
driveability problems are encountered after power loss or battery has
been disconnected. These procedures may provide an aid in eliminating
these problems.
To reduce the possibility of complaints, after any service
which requires battery power to be disconnected, vehicle should be
road tested.
COMPUTER RELEARN PROCEDURES
Vehicles equipped with engine or transmission computers may
require a relearn procedure after vehicle battery is disconnected.
Many vehicle computers memorize and store vehicle operation patterns
for optimum driveability and performance. When vehicle battery is
disconnected, this memory is lost. The computer will use default data
until new data from each key start is stored. As computer memorizes
vehicle operation for each new key start, driveability is restored.
Vehicle computers may memorize vehicles operation patterns for 40 of
more key starts.
Customers often complain of driveability problems during
relearn stage because vehicle acts differently then before being
serviced. Depending on type and make of vehicle and how it is
equipped, the following complaints (driveability problems) may exist:
* Harsh Or Poor Shift Quality
* Rough Or Unstable Idle
* Hesitation Or Stumble
* Rich Or Lean Running
* Poor Fuel Mileage
These symptoms and complaints should disappear after a number
of drive cycles have been memorized. To reduce the possibility of
complaints, after any service which requires battery power to be
disconnected, vehicle should be road tested. If a specific relearn
procedure is not available, the following procedure may be used:
Automatic Transmission
* Set parking brake, start engine in "P" or "N" position.
Warm-up vehicle to normal operating temperature or until
cooling fan cycles.
* Allow vehicle to idle for one minute in "N" position. Select
"D" and allow engine to idle for one minute.
* Accelerate at normal throttle position (20-50%) until vehicle
shifts into top gear.
* Cruise at light to medium throttle.
* Decelerate to a stop, allowing vehicle to downshift, and use
brakes normally.
* Process may be repeated as necessary.
Manual Transmission
* Place transmission in Neutral position.
* Ensure emergency brake has been set and all accessories
are turned off.
* Start engine and bring to normal operating temperature.
* Allow vehicle to idle in Neutral for one minute.
* Initial relearn is complete: process will be completed during
normal driving.
Some manufacturers identify a specific relearn procedure
which will help establish suitable driveability during relearn stage.
These procedures are especially important if vehicle is equipped with
and electronically controlled automatic transmission or transaxle.
Always complete procedure before returning vehicle to customer.

[erics1one]

Well if 95CelicaST didn't have an manual, I thought this how-to article might help out since you didn't post the relearning procedures in the first place.

Guess two guides is better than one.

Thanks!

[95CelicaST]

Thanks guys. I have a manual trans., but my car didnt come with an owner's manual. so I had no idea what was going on. It sucked, but now that I know this I will be sure to complete the relearning process. Thanks

Matt

[Rjb23]

You really don't have to do it for a manual. Just if you have a auto. If you warm car up before you drive it pretty much you have done the relearn procedure.