Big problem please help!
#1
02-22-2018, 09:32 AM
Big problem please help!
Wife was driving my h3 and it just turned off. The traction control crap came up and here is the list of crap I have done!
Replaced battery
Tested all coil packs
Checked all spark plugs
Performed a compression test on each cylinder
R&R computer
Tested all wires on engine harness
R&R injectors
R&R crank position sensor
R&R intake gaskets
Tested and R&R throttle body
R&R accelerator solenoid
Cleaned EGR valve
and still runs like crap!
requires you to give it gas just to start it, once you get it started you can bring it up to about 2000rmps and it starts to clear up. If you try and drive it you may make it three blocks and it goes into limp mode and turns off!
any ideas, please help
Replaced battery
Tested all coil packs
Checked all spark plugs
Performed a compression test on each cylinder
R&R computer
Tested all wires on engine harness
R&R injectors
R&R crank position sensor
R&R intake gaskets
Tested and R&R throttle body
R&R accelerator solenoid
Cleaned EGR valve
and still runs like crap!
requires you to give it gas just to start it, once you get it started you can bring it up to about 2000rmps and it starts to clear up. If you try and drive it you may make it three blocks and it goes into limp mode and turns off!
any ideas, please help
#3
02-22-2018, 01:57 PM
Wife was driving my h3 and it just turned off. The traction control crap came up and here is the list of crap I have done!
Replaced battery
Tested all coil packs
Checked all spark plugs
Performed a compression test on each cylinder
R&R computer
Tested all wires on engine harness
R&R injectors
R&R crank position sensor
R&R intake gaskets
Tested and R&R throttle body
R&R accelerator solenoid
Cleaned EGR valve
and still runs like crap!
requires you to give it gas just to start it, once you get it started you can bring it up to about 2000rmps and it starts to clear up. If you try and drive it you may make it three blocks and it goes into limp mode and turns off!
any ideas, please help
Replaced battery
Tested all coil packs
Checked all spark plugs
Performed a compression test on each cylinder
R&R computer
Tested all wires on engine harness
R&R injectors
R&R crank position sensor
R&R intake gaskets
Tested and R&R throttle body
R&R accelerator solenoid
Cleaned EGR valve
and still runs like crap!
requires you to give it gas just to start it, once you get it started you can bring it up to about 2000rmps and it starts to clear up. If you try and drive it you may make it three blocks and it goes into limp mode and turns off!
any ideas, please help
What is an accelerator solenoid?
I see you replaced the battery, but does it still have the OEM Crappy Azzed Battery Terminal Connectors? #1 cause of electrical gremlins for H3s and easy to rule out by hacking of the POS OEMs and replacing with a quality aftermarket set.
Might want to look over this thread and do some searching.
https://www.hummerforums.com/forum/h...what-do-33916/
Let us know if you need more help.
#4
02-22-2018, 10:27 PM
Wife was driving my h3 and it just turned off. The traction control crap came up and here is the list of crap I have done!
Replaced battery. ++++++ (NEW?)
Tested all coil packs +++++(how was this accomplished?)
Checked all spark plugs ++++++(brand?)
Performed a compression test on each cylinder +++++(compression on each?)
R&R computer (please elaborate???)
Tested all wires on engine harness +++++(elaborate????)
R&R injectors +++++(elaborate???)
R&R crank position sensor +++++(elaborate????)
R&R intake gaskets +++++(elaborate????)
Tested and R&R throttle body +++++(elaborate????)
R&R accelerator solenoid +++++(elaborate????)
Cleaned EGR valve +++++ No such animal +++++
and still runs like crap!
requires you to give it gas just to start it, once you get it started you can bring it up to about 2000rmps and it starts to clear up. If you try and drive it you may make it three blocks and it goes into limp mode and turns off!
any ideas, please help
Replaced battery. ++++++ (NEW?)
Tested all coil packs +++++(how was this accomplished?)
Checked all spark plugs ++++++(brand?)
Performed a compression test on each cylinder +++++(compression on each?)
R&R computer (please elaborate???)
Tested all wires on engine harness +++++(elaborate????)
R&R injectors +++++(elaborate???)
R&R crank position sensor +++++(elaborate????)
R&R intake gaskets +++++(elaborate????)
Tested and R&R throttle body +++++(elaborate????)
R&R accelerator solenoid +++++(elaborate????)
Cleaned EGR valve +++++ No such animal +++++
and still runs like crap!
requires you to give it gas just to start it, once you get it started you can bring it up to about 2000rmps and it starts to clear up. If you try and drive it you may make it three blocks and it goes into limp mode and turns off!
any ideas, please help
Please provide more indepth information
#5
02-23-2018, 09:29 AM
Big problem please help
ok everything you see that I R&R I replaced new the coil packs I replaced each one at a time and on the computer that is the engine computer on the fire wall and again I have a California model and yes it has an EGR valve most have this plugged off and they have coused lots of problem for people if they have a carbon build up. Every code that my snap- on code reader sent me to I checked and replaced just wanting the problem to go away. On the compression test every cylinder was around the same 170. I can say one thing she will run great one day again.
#6
02-23-2018, 10:43 AM
ok everything you see that I R&R I replaced new the coil packs I replaced each one at a time and on the computer that is the engine computer on the fire wall and again I have a California model and yes it has an EGR valve most have this plugged off and they have coused lots of problem for people if they have a carbon build up. Every code that my snap- on code reader sent me to I checked and replaced just wanting the problem to go away. On the compression test every cylinder was around the same 170. I can say one thing she will run great one day again.
#7
02-23-2018, 12:10 PM
they have an egr "system" that uses an orfice to control air volume not the old type valve that stuck! it does the same thing.
#8
02-23-2018, 01:06 PM
From the official GM Press Release upon launch of the 3.7L:
"VVT enhances performance and improves emissions by regulating the timing of the opening and closing of the exhaust valves. With VVT, camshaft lobe profiles are selected to enhance power, torque and engine smoothness, and the valve timing is optimized for the camshaft at different rpm levels by the PCM. VVT also eliminates the need for external exhaust gas recirculation (EGR) and contributes to improved emissions. With VVT, the exhaust valves' timing can be adjusted to "retard" the exhaust cam, thereby creating internal EGR. These leftover gases are recycled into the next burn cycle, improving emissions and engine performance."
It all happens inside the motor electronically controlled through the PCM using VVT. The exhaust gases never escape, they just linger within the upper cylinder and head until the next ignition cycle and that condition continues and is slowly reduced (the exhaust cam is advanced) by the PCM until the vehicle reaches full operating temp.
Technology killed the EGR valve.
#9
02-24-2018, 12:05 PM
Big problem please help
You are thinking of crankcase ventilation, not EGR.
From the official GM Press Release upon launch of the 3.7L:
"VVT enhances performance and improves emissions by regulating the timing of the opening and closing of the exhaust valves. With VVT, camshaft lobe profiles are selected to enhance power, torque and engine smoothness, and the valve timing is optimized for the camshaft at different rpm levels by the PCM. VVT also eliminates the need for external exhaust gas recirculation (EGR) and contributes to improved emissions. With VVT, the exhaust valves' timing can be adjusted to "retard" the exhaust cam, thereby creating internal EGR. These leftover gases are recycled into the next burn cycle, improving emissions and engine performance."
It all happens inside the motor electronically controlled through the PCM using VVT. The exhaust gases never escape, they just linger within the upper cylinder and head until the next ignition cycle and that condition continues and is slowly reduced (the exhaust cam is advanced) by the PCM until the vehicle reaches full operating temp.
Technology killed the EGR valve.
From the official GM Press Release upon launch of the 3.7L:
"VVT enhances performance and improves emissions by regulating the timing of the opening and closing of the exhaust valves. With VVT, camshaft lobe profiles are selected to enhance power, torque and engine smoothness, and the valve timing is optimized for the camshaft at different rpm levels by the PCM. VVT also eliminates the need for external exhaust gas recirculation (EGR) and contributes to improved emissions. With VVT, the exhaust valves' timing can be adjusted to "retard" the exhaust cam, thereby creating internal EGR. These leftover gases are recycled into the next burn cycle, improving emissions and engine performance."
It all happens inside the motor electronically controlled through the PCM using VVT. The exhaust gases never escape, they just linger within the upper cylinder and head until the next ignition cycle and that condition continues and is slowly reduced (the exhaust cam is advanced) by the PCM until the vehicle reaches full operating temp.
Technology killed the EGR valve.