HELP Fan wont turn on and O2 sensor code-FIXED
HELP__________________________HPDE car is Over heating/O2 sensor code___________________________HELP
Thanks everyone fixed it
jumped fan
02 a open from engine wire harness to ECU
NEW INFO 09/24/09 11 pm PST
HPDE Cars specs
1988 Honda CRX Si
D16a6
PROBLEM
1. Fan does not turn on so car over heats when idling.
Running water
Stock radiator
think of by passing and making a toggle switch.
2. O2 sensor code 1 - replaced it still get code and resetted the ECU and check grounds and connections.
TESTED
Fan - OK - jump with battery turned on
ECT - OK - heated up car and unplugged and tested for resistance, but the ohms jumped up and down is this normal.
Grounds - OK - but I am going to check again
Relay - hooked up battery to C and D and checked resistance on A and B side of Relay got some resistance to 0.00.
02 - OK - get volatage when warmed up and checked all connections.
Fuel Regualtor - OK - seems ok replace with another need to get a fuel press test gauge.
QUESTIONS
- I am fixing the O2 sensor and I realize the the O2 sensor wire is supposed to be white but mine is black is this normal and I am in the process of getting a ETM
I am in the process of checking all connections any suggestion would be greatly appreciated.
Need to upgrade to aluminum radiator oversized.
Thanks
Charles
562-219-1144
Thanks everyone fixed it
jumped fan
02 a open from engine wire harness to ECU
NEW INFO 09/24/09 11 pm PST
HPDE Cars specs
1988 Honda CRX Si
D16a6
PROBLEM
1. Fan does not turn on so car over heats when idling.
Running water
Stock radiator
think of by passing and making a toggle switch.
2. O2 sensor code 1 - replaced it still get code and resetted the ECU and check grounds and connections.
TESTED
Fan - OK - jump with battery turned on
ECT - OK - heated up car and unplugged and tested for resistance, but the ohms jumped up and down is this normal.
Grounds - OK - but I am going to check again
Relay - hooked up battery to C and D and checked resistance on A and B side of Relay got some resistance to 0.00.
02 - OK - get volatage when warmed up and checked all connections.
Fuel Regualtor - OK - seems ok replace with another need to get a fuel press test gauge.
QUESTIONS
- I am fixing the O2 sensor and I realize the the O2 sensor wire is supposed to be white but mine is black is this normal and I am in the process of getting a ETM
I am in the process of checking all connections any suggestion would be greatly appreciated.
Need to upgrade to aluminum radiator oversized.
Thanks
Charles
562-219-1144
Last edited by civichb20; Sep 25, 2009 at 11:29 PM.
toggle switch 
its because of the wetter water too.
get a better radiator too, when i got an alluminum radaitor my motor stayed a tad cooler than the stock one.
are you able to disable the o2 sensor?

its because of the wetter water too.
get a better radiator too, when i got an alluminum radaitor my motor stayed a tad cooler than the stock one.
are you able to disable the o2 sensor?
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Road Racing / Autocross & Time Attack
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Sep 26, 2009 05:14 PM




