HELP - weird running
06-09-2010, 11:01 AM
#1
Thread Starter
HELP - weird running
OK so I've put the S back to stock to make way for my Aston Martin V8VR
I think it suspects something is going on and has decided to play up!
It had an AEM ECU and a Modifry AP2 ECT on it. It also had a Visteon Racing radiator.
Those have all gone, the wiring is all back to stock and the stock radiator & ECU are on.
Oil level & coolant systems both topped up and fine.
So here's what happens!
Connect the battery and it starts fine
It throws three CEL's:
P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Input
P0123 Throttle Position (TP) Sensor Circuit High Input
It continues to run fine with a high idle (which I'm presuming is it learning the idel point).
It warms up and the idle settles but there is no reading on the dash coolant gauge.
There is +5v out of the ECU to the ECT sensor, only ~0.5V going back out to the dash though.
If I switch it off and try to restart it it will not fire and smells like it is flooding.
I disconnected the battery again and started over.
Exactly the same other than the idle does not settle.
It still will not restart the second time!
Any ideas or suggestions?
HELP!
I think it suspects something is going on and has decided to play up!
It had an AEM ECU and a Modifry AP2 ECT on it. It also had a Visteon Racing radiator.
Those have all gone, the wiring is all back to stock and the stock radiator & ECU are on.
Oil level & coolant systems both topped up and fine.
So here's what happens!
Connect the battery and it starts fine
It throws three CEL's:
P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Input
P0123 Throttle Position (TP) Sensor Circuit High Input
It continues to run fine with a high idle (which I'm presuming is it learning the idel point).
It warms up and the idle settles but there is no reading on the dash coolant gauge.
There is +5v out of the ECU to the ECT sensor, only ~0.5V going back out to the dash though.
If I switch it off and try to restart it it will not fire and smells like it is flooding.
I disconnected the battery again and started over.
Exactly the same other than the idle does not settle.
It still will not restart the second time!
Any ideas or suggestions?
HELP!
anyone?
06-11-2010, 08:08 AM
#4
Why not on the UK forum?
Have you checked the connections and ECU connections?
Sounds like a wiring issue (intially)
It will learn the idling point very quickly only after a few stops at a junction etc.
06-11-2010, 10:06 AM
#5
Thread Starter
Wider audience here, was going to link to this from the UK.
I suspect a problem with the remade connections after taking the AEM out
I'm going to remake them and then work through the Workshop manual diagnostics
06-12-2010, 10:46 AM
#6
Thread Starter
Went through the workshop manual diagnosis for the thrown codes
Nothing wrong with the sensors or the cables
Decided to unplug the O2 sensors as both have been on the exhaust with no power whist I had the blower on!
Voila only O2 heater codes and normal running
Plugged the secondary back in, nothing changed
Hopefully I've cracked it and just need to replace the primary O2
Nothing wrong with the sensors or the cables
Decided to unplug the O2 sensors as both have been on the exhaust with no power whist I had the blower on!
Voila only O2 heater codes and normal running
Plugged the secondary back in, nothing changed
Hopefully I've cracked it and just need to replace the primary O2
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