My Car has Ran Like Poo ever since.....
08-10-2005, 10:54 PM
#1
On The Tree
Thread Starter
Join Date: Feb 2005
Location: Maryland
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
My Car has Ran Like Poo ever since..... My car has ran like doodoo ever since I removed The PCM fuses to get rid the the SES light (02 Sensor i think) ... When I nail the gas the car moves but it doesn't jump like it used too... I Might get a Dyno Tune if i can find a place in Maryland that does that... Any Comments??
08-10-2005, 11:07 PM
#3
On The Tree
Thread Starter
Join Date: Feb 2005
Location: Maryland
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
No.. but when i first started the car after putting them back in it would barely stay running ( idle at like 200-300 ) then after about 2 minutes it would idle normal....
someone help
someone help
08-11-2005, 08:27 AM
#4
11 Second Club
iTrader: (8)
Join Date: Jan 2002
Location: SILSBEE TX
Posts: 1,782
Likes: 0
Received 0 Likes
on
0 Posts
Try this
RESET PCM
Instructions on How to Reset the LS1 ECM
Submitted by: Scott Harroff
This is intended to reset that aggravating 'Service Engine Soon' light so many of us seem to see. The light is normally set due to a loose gas cap or a high frequency error on the mass air flow sensor in front of the intake manifold. If the light persists, you may want to have you car checked by a GM dealer. It may be a good idea to remove your K&N air filter, and replace it with the stock filter or equivalent before your visit to the dealer. Dealers, in the past, have been known to blame the MAS error on excessive oil in the K&N leaking onto the MAS. If the fuses aren't removed in this procedure, the codes will be stored in the ECM until the fuses are removed, or the dealer clears them with a scan tool. Rumors have it that stored codes retard timing and spark ignition which will hender the performance of you LS1.
1. Turn key on but don't start car.
2. Pull PCM BAT and PCM IGN fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.
>>It will take the car a while to relearn the fuel and timing curves so don't worry about a temporary performance loss.<<<<<<
RESET SERVICE ENG LITE
& CLEAR CODES
F BODY LS1
1. Turn key on but don't start car.
2. Pull PCM BAT and PCM IGN fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.
------------------------------
RESET SEV ENG LITE & CLEAR CODES
5.3 TRUCKS
1. Turn key on but don't start car.
2. Pull ECM 1- ENG 1-ECMB fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.
>>> AFTER RESET ENG MAY TAKE A FEW MINUTES TO RELEARN IDLE AND TIMMING CURVE <<<
automatic transmission
1 Turn off the ignition
2 Restore the PCM battery feed
3 Turn Off the AC controls
4 Set the parking brake and block the drive wheels
5 Start the engine
6 Allow the engine coolant temperature to reach 176 degrees F
7 Shift the transmission selector into the drive range
8 Allow the engine to idle for 5 minutes
9 Turn on the AC controls (Omit for 2000-01 model)
10 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
11 Shift the transmission selector into Park
12 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
13 Turn off the AC controls (Omit for 2000-01 model)
14 Allow the engine to idle for 5 minutes
15 Turn off the engine for 15 seconds
Manual Transmission:
1 Turn Off the ignition
2 Restore the PCM battery feed
3 Turn Off the AC controls
4 Set the parking brake and block the drive wheels
5 Transmission in neutral
6 Start the engine
7 Allow the engine coolant temperature to reach 176 degrees F
8 Turn on the AC controls (Omit for 2000-01 model)
9 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
10 Turn off the AC controls (Omit for 2000-01 model)
11 Allow the engine to idle for 5 minutes
12 Turn off the engine for 15 seconds
RESET PCM
Instructions on How to Reset the LS1 ECM
Submitted by: Scott Harroff
This is intended to reset that aggravating 'Service Engine Soon' light so many of us seem to see. The light is normally set due to a loose gas cap or a high frequency error on the mass air flow sensor in front of the intake manifold. If the light persists, you may want to have you car checked by a GM dealer. It may be a good idea to remove your K&N air filter, and replace it with the stock filter or equivalent before your visit to the dealer. Dealers, in the past, have been known to blame the MAS error on excessive oil in the K&N leaking onto the MAS. If the fuses aren't removed in this procedure, the codes will be stored in the ECM until the fuses are removed, or the dealer clears them with a scan tool. Rumors have it that stored codes retard timing and spark ignition which will hender the performance of you LS1.
1. Turn key on but don't start car.
2. Pull PCM BAT and PCM IGN fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.
>>It will take the car a while to relearn the fuel and timing curves so don't worry about a temporary performance loss.<<<<<<
RESET SERVICE ENG LITE
& CLEAR CODES
F BODY LS1
1. Turn key on but don't start car.
2. Pull PCM BAT and PCM IGN fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.
------------------------------
RESET SEV ENG LITE & CLEAR CODES
5.3 TRUCKS
1. Turn key on but don't start car.
2. Pull ECM 1- ENG 1-ECMB fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.
>>> AFTER RESET ENG MAY TAKE A FEW MINUTES TO RELEARN IDLE AND TIMMING CURVE <<<
automatic transmission
1 Turn off the ignition
2 Restore the PCM battery feed
3 Turn Off the AC controls
4 Set the parking brake and block the drive wheels
5 Start the engine
6 Allow the engine coolant temperature to reach 176 degrees F
7 Shift the transmission selector into the drive range
8 Allow the engine to idle for 5 minutes
9 Turn on the AC controls (Omit for 2000-01 model)
10 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
11 Shift the transmission selector into Park
12 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
13 Turn off the AC controls (Omit for 2000-01 model)
14 Allow the engine to idle for 5 minutes
15 Turn off the engine for 15 seconds
Manual Transmission:
1 Turn Off the ignition
2 Restore the PCM battery feed
3 Turn Off the AC controls
4 Set the parking brake and block the drive wheels
5 Transmission in neutral
6 Start the engine
7 Allow the engine coolant temperature to reach 176 degrees F
8 Turn on the AC controls (Omit for 2000-01 model)
9 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
10 Turn off the AC controls (Omit for 2000-01 model)
11 Allow the engine to idle for 5 minutes
12 Turn off the engine for 15 seconds
08-11-2005, 09:38 AM
#5
Moderator
iTrader: (11)
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,604
Likes: 0
Received 6 Likes
on
6 Posts
Problem is, resetting the PCM has removed the
learning that was done, to adapt to something
not right (see SES light). Blank the learning and
the car runs like it's messed up, because it is
somehow.
Best to read the code before killing it, they are
informative.
I would start by cleaning the MAF of the built
up K&N oil/dust. Blow a whole can of QD contact
cleaner (Home Depot electrical dept) through it,
all angles, get it to where the stuff runs off clear
(drip onto paper towel shows no more oil stains).
learning that was done, to adapt to something
not right (see SES light). Blank the learning and
the car runs like it's messed up, because it is
somehow.
Best to read the code before killing it, they are
informative.
I would start by cleaning the MAF of the built
up K&N oil/dust. Blow a whole can of QD contact
cleaner (Home Depot electrical dept) through it,
all angles, get it to where the stuff runs off clear
(drip onto paper towel shows no more oil stains).
08-11-2005, 01:25 PM
#6
On The Tree
Join Date: Feb 2004
Location: Atlanta
Posts: 185
Likes: 0
Received 0 Likes
on
0 Posts
Is it a good idea to reset your PCM after something like a header install? My SES light has been on since I installed my pacesetters (obviously cause i'm running rich), would it do me any good to reset the PCM?
