cleared engine lite NOW WHAT!
Thread Starter
Advanced
Joined: Jul 2004
Posts: 71
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From: Napierville Quebec
cleared engine lite NOW WHAT!
I have a 99 'vert with no mods except a B&B exhaust. Yesterday engine lite came on so figured i'd retrieve codes myself. Purchased an obd2 scanner today. ( This before i read thread on how to do it in cars dash )
Oh well too late! Surprise surprise. Had 8 dtc's as follows;
P1518
PO785
PO200
PO443
PO449
PO740
PO785
P1860
Sure the obd2 gave a description for each code ,but i'm not a rocket scientist !
I erased codes , lite is gone. Now what, will they reappear?
Can someone tell me if any of these codes are serious and if any of them could be related to the clicking noise coming from the dual climate control actuator in dash ? I tried resetting it by pulling fuse for 60 secs.
Oh well too late! Surprise surprise. Had 8 dtc's as follows;
P1518
PO785
PO200
PO443
PO449
PO740
PO785
P1860
Sure the obd2 gave a description for each code ,but i'm not a rocket scientist !
I erased codes , lite is gone. Now what, will they reappear?
Can someone tell me if any of these codes are serious and if any of them could be related to the clicking noise coming from the dual climate control actuator in dash ? I tried resetting it by pulling fuse for 60 secs.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
P1518 Throttle Actuator Control (TAC) Module Serial Data Circuit
P0785 3-2 Shift Solenoid Circuit Electrical
P0200 Injector Control Circuit
P0443 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit
P0740 TCC Enable Solenoid Circuit Electrical
P0785 3-2 Shift Solenoid Circuit Electrical
P1860 TCC PWM Solenoid Circuit Electrical
If you cleared the codes and they didn't come back, I would guess that someone powered up the car when things weren't all connected. Just watch it closely for a few days.
source:http://www.digitalcorvettes.com/foru...p/t-45541.html
The P1518 is the most serious issue there.
P0785 3-2 Shift Solenoid Circuit Electrical
P0200 Injector Control Circuit
P0443 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit
P0740 TCC Enable Solenoid Circuit Electrical
P0785 3-2 Shift Solenoid Circuit Electrical
P1860 TCC PWM Solenoid Circuit Electrical
If you cleared the codes and they didn't come back, I would guess that someone powered up the car when things weren't all connected. Just watch it closely for a few days.
source:http://www.digitalcorvettes.com/foru...p/t-45541.html
The P1518 is the most serious issue there.
Last edited by dgrant3830; Jun 19, 2008 at 11:52 PM.
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
Only if there is something going wrong. Drive the car for a day or two and check for any DTCs. If all is clear, then something freaked the system out. Usually when you have that many codes it's a sign that something upset the system. Usually if one or two reappear it means there is really something starting to fail.
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
Your A/C "problem" may have codes posted ..... but the OBD2 scanner won't read those. Use the DIC procedure to display ALL the codes in the car .... then post them.
I agree with dgrant3830 .... drive the car for a couple of days and see what (if anything) comes back.
I agree with dgrant3830 .... drive the car for a couple of days and see what (if anything) comes back.
Thread Starter
Advanced
Joined: Jul 2004
Posts: 71
Likes: 0
From: Napierville Quebec
AOLDCM AIRDCM BOFRA
B2252H B2253H U1096H
2202H 2283H 1064H
2206H 2285H 1016H
2208H U1064H C2110H
2282H C2115H
2284H
2262H
2264H
U1064H
As one can see there's alot of codes, but they are all " history " and none are related to the HVAC. The car runs great except for the actuator making awful noises from dash. Does any one have other ideas ? Yes i pulled # 27 fuse for 60 secs.
Well for now i erased all DTCs and will drive around a couple days weather permitting and see what happens.
Also how long before the system " cycles " though all its parameters ie; o2 sensor, smog/air pump, anti pollution crap etc. ?
Thread Starter
Advanced
Joined: Jul 2004
Posts: 71
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From: Napierville Quebec
ANYONE OUT THERE ??
PLEASSSE HELP.
COULD THE ACTUATOR BE CLICKING IF THE R134 GAS IS TOO LOW ?
THE A/C IS BLOWING COLD ON BOTH SIDES THOUGH. THE NOISE STARTED ONLY SINCE I ADDED A 12 OZ RECHARGE .
PLEASSSE HELP.
COULD THE ACTUATOR BE CLICKING IF THE R134 GAS IS TOO LOW ?
THE A/C IS BLOWING COLD ON BOTH SIDES THOUGH. THE NOISE STARTED ONLY SINCE I ADDED A 12 OZ RECHARGE .
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
R134 systems are not like the old R12. You can't just add refrigerant to it and go. I don't know if that is what you are hearing or not but have you checked to see if the compressor is turning on and off at the same time that you hear the clicking?
R134 systems need a specific amount of R134 based upon the local temperature at the time and the system requirements. Usually, it has to be done by a professional shop with the proper equipment.
R134 systems need a specific amount of R134 based upon the local temperature at the time and the system requirements. Usually, it has to be done by a professional shop with the proper equipment.
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Safety Car
Joined: Dec 2004
Posts: 3,526
Likes: 20
From: Santa Fe TX
R134 systems are not like the old R12. You can't just add refrigerant to it and go. I don't know if that is what you are hearing or not but have you checked to see if the compressor is turning on and off at the same time that you hear the clicking?
R134 systems need a specific amount of R134 based upon the local temperature at the time and the system requirements. Usually, it has to be done by a professional shop with the proper equipment.
R134 systems need a specific amount of R134 based upon the local temperature at the time and the system requirements. Usually, it has to be done by a professional shop with the proper equipment.
In other words, if someone knows how to do R12, then all they need are the new acceptable high pressure side and low pressure side readings when full - and a set of gauges.
You can even add it without gauges if you are sure it's low. As long as you don't turn the can upside down or rev the engine, then it won't suck too much (overfill).
If the system is completely empty, sometimes the compressor won't turn on (protection mechanism). The belt will always turn on the compressor, but if you look at the middle of the pulley, it only turns when the compressor kicks in. I click can also be heard on clutch engage/disengange. Then you have to suck the first can in by putting a vacuum on the system. Vacuum evaporates all the moisture as well, which is a good thing. Autozone rents vacuum pumps.
This may not be the "professional" way of doing it, but it's worked for me in the past on many cars.
Last edited by jedblanks; Jun 21, 2008 at 08:36 AM.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
I tried that on an Xterra that I had, using guages and the whole lot. But, I got too much in it and the overpressure switch was kicking it off. Apparently I didn't know enough, whereas back in the R12 days, it was easy.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The only things in the climate control system that would make noises are the:
Actuators: If there over driving or the gear is cracked (which would set DTCs)
Vacuum dampers moving
HVAC blower Motor. (Sometimes the squirrel cage rotor can get trash in it and make clicking noises that change with blower motor speed)
Something inside the HVAC ducts or air box blowing around. Does it change with fan speed???
Actuators: If there over driving or the gear is cracked (which would set DTCs)
Vacuum dampers moving
HVAC blower Motor. (Sometimes the squirrel cage rotor can get trash in it and make clicking noises that change with blower motor speed)
Something inside the HVAC ducts or air box blowing around. Does it change with fan speed???