97 7.3, raw diesel and ect issues - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 10-11-2019, 11:51 PM Thread Starter
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97 7.3, raw diesel and ect issues

Hey, I have a 1997 F250 7.3. Its had a pretty hard life. It smokes white on startup (raw diesel, not coolant) and now does it almost all the time as its getting colder here in Saskatchewan.

I hooked it up to my elm327 scanner and FORscan.
My ects went up ok until about 50*celsius (122*F) and then it all of a sudden said -160*C
I imagine the other reading that always says -40 is the one i shouldn't be reading.

I have two screenshots of the gauges.

Error codes were
P0470
P1212
P1211
and then my battery light came on before i shut it off.
The oil temps were too low to run a cylinder contribution test.

What do you guys think?
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post #2 of 5 (permalink) Old 10-12-2019, 04:04 AM
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Re: 97 7.3, raw diesel and ect issues

Kyle,

I have seen this same thing happen with my setup. FORScan with a compatible reader. I have heard that the ECT is not really "hooked" up in our trucks. There is an engine coolant sensor, but it is only used for the gauge. The PCM is primarily looking at the engine oil temp EOT PID.

Cj

1997 F350 CCLB 7.3, Eaton Fuller RTO-6610, 4x4, 3.54, otherwise stock
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post #3 of 5 (permalink) Old 10-12-2019, 04:27 PM Thread Starter
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Ok, thanks. My temp gauge in the cluster has never worked since I got the truck. I assumed it was the stepper motor.
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post #4 of 5 (permalink) Old 10-12-2019, 05:03 PM
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Re: 97 7.3, raw diesel and ect issues

Hes correct, the PCM does not monitor ECT. The sensor strictly goes to the dash.

Any values you see will be false, unless you're looking at EOT.


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1996 Cali F350 CCFB, 7.3 PSD, 2wd SAS, w/ 380,000 miles.
New Motor at 352,000, DieselSite Legendary Trans at 356,000 and many more
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post #5 of 5 (permalink) Old 10-14-2019, 04:07 PM Thread Starter
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Ok, thanks. Any idea about the codes? I'm just wondering if the codes could be related or seperate. I replaced the ipc sensor with a cheap Amazon one and it made no difference. My original was leaking through the connector.
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