Very low power, green key light blinking and CEL after timing belt change
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Very low power, green key light blinking and CEL after timing belt change
Hey everyone!
I am a subie guy, but a friend asked me to change his timing belt in his 2002 Honda Civic EX automatic. This is a 4 door with a 1.7l engine. Completely stock, no mods. Replaced with factory belt, factory tensioner, factory water pump, and factory bearing seals.
After running perfectly for around 20 miles, the car went into limp mode and wouldn't exceed 55 mph, according to the owner.
I tore it back down and ensured that the timing was still dead on, and it is.
I cannot get a reading from the OBDII port, all I get is a "Cannot connect" error.
I replaced both the crank position sensor and cam position sensor, the electronic load sensor, and ensured that all my bolts were tight and good.
I checked every single fuse in the vehicle to ensure that nothing was blown.
It seems to be running incredibly rich as well, but I am not sure.
Main symptoms: Slow to start. Green key light blinking. CEL light on. No ability to pull anything from OBDII. Sluggish and hesitant, doesn't like to rev high at all, no tachometer function, no coolant temp gauge function.
Help me out! I am unsure of where to go from here.
I am a subie guy, but a friend asked me to change his timing belt in his 2002 Honda Civic EX automatic. This is a 4 door with a 1.7l engine. Completely stock, no mods. Replaced with factory belt, factory tensioner, factory water pump, and factory bearing seals.
After running perfectly for around 20 miles, the car went into limp mode and wouldn't exceed 55 mph, according to the owner.
I tore it back down and ensured that the timing was still dead on, and it is.
I cannot get a reading from the OBDII port, all I get is a "Cannot connect" error.
I replaced both the crank position sensor and cam position sensor, the electronic load sensor, and ensured that all my bolts were tight and good.
I checked every single fuse in the vehicle to ensure that nothing was blown.
It seems to be running incredibly rich as well, but I am not sure.
Main symptoms: Slow to start. Green key light blinking. CEL light on. No ability to pull anything from OBDII. Sluggish and hesitant, doesn't like to rev high at all, no tachometer function, no coolant temp gauge function.
Help me out! I am unsure of where to go from here.
If you think a good mechanic is expensive, try hiring a bad one
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Re: Very low power, green key light blinking and CEL after timing belt change
The usual cause is the alternator bolts were left loose. This can fry the PCM.
Alternator may still be just fine.
Alternator may still be just fine.
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
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From: Midwest. Aiming about mid-chest
Rep Power: 517 Re: Very low power, green key light blinking and CEL after timing belt change
Read this:
http://www.underhoodservice.com/issu...ontentid=88560
Word-for-word copy of Hondas service info on this.
http://www.underhoodservice.com/issu...ontentid=88560
Word-for-word copy of Hondas service info on this.
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Read this:
http://www.underhoodservice.com/issu...ontentid=88560
Word-for-word copy of Hondas service info on this.
http://www.underhoodservice.com/issu...ontentid=88560
Word-for-word copy of Hondas service info on this.
I assured them that this wasn't possible, they disconnected the battery by itself and it tested fine.
I know that's vague, but do you think it's worth replacing the alternator, or going straight to the salvage yard and pulling a PCM from a similar car?
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
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From: Midwest. Aiming about mid-chest
Rep Power: 517 Re: Very low power, green key light blinking and CEL after timing belt change
I know that's vague,
and ensured that all my bolts were tight and good.
Seriously. I'm looking for the root cause of (what appears to be) the PCM failure.
I cannot get a reading from the OBDII port, all I get is a "Cannot connect" error.
do you think it's worth replacing the alternator
or going straight to the salvage yard and pulling a PCM from a similar car?
a friend asked me to change his timing belt
the car went into limp mode
I replaced both the crank position sensor and cam position sensor, the electronic load sensor,
Wow.
It seems to be running incredibly rich as well, but I am not sure.
Part of limp mode.
Main symptoms: Slow to start. Green key light blinking. CEL light on. No ability to pull anything from OBDII. Sluggish and hesitant, doesn't like to rev high at all, no tachometer function, no coolant temp gauge function.
All those come from the PCM that went brain dead.
the car went into limp mode
I replaced both the crank position sensor and cam position sensor, the electronic load sensor,
Wow.
It seems to be running incredibly rich as well, but I am not sure.
Part of limp mode.
Main symptoms: Slow to start. Green key light blinking. CEL light on. No ability to pull anything from OBDII. Sluggish and hesitant, doesn't like to rev high at all, no tachometer function, no coolant temp gauge function.
All those come from the PCM that went brain dead.
stealership for some Honda pros
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have you figured this out.? I have done my head gasket and timing 500km ago changed shift solenoid and cam sensor 300km ago. Now this morning i had every issue you explained.
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oem alt and. Just double triple checked everything and my alt bolts were a tad loose. Maybe this fried my ecu aswell. I see another thread where loose alt bolt was causing cam sensor code aswell. Will get new ecu flashed tomorrow hopefully
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https://honda-tech.com/forums/engine...uired-3295937/
Joined: Dec 2008
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From: TN
Rep Power: 366 Re: Very low power, green key light blinking and CEL after timing belt change
if you screw up the ECU it will be even more hassle.
Read the link i posted, most locksmiths nowadays have the tool to program the key
no need to tow to stealership. Just call the locksmith to find out if they can program your car
Read the link i posted, most locksmiths nowadays have the tool to program the key
no need to tow to stealership. Just call the locksmith to find out if they can program your car
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alternator, belt, blinking, change, civic, green, honda, key, light, low, power, replaced, replacement, tachoneter, timing
