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DTC P1400

Tiny
DOCTORD453
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No my scan tool is a simple one. It doesn’t have two way data. Just DTC codes.
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Tuesday, September 24th, 2019 AT 8:01 PM
Tiny
ASEMASTER6371
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Can you get one to read live data?

Roy
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Tuesday, September 24th, 2019 AT 8:25 PM
Tiny
DOCTORD453
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I’m not sure. I can check about one. May take me a few days.
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Tuesday, September 24th, 2019 AT 8:38 PM
Tiny
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Okay, keep me updated.
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Tuesday, September 24th, 2019 AT 9:04 PM
Tiny
DOCTORD453
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Okay. Will do.
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Tuesday, September 24th, 2019 AT 9:44 PM
Tiny
ASEMASTER6371
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Thanks.

Roy
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Tuesday, September 24th, 2019 AT 9:56 PM
Tiny
DOCTORD453
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Thank you.
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Tuesday, September 24th, 2019 AT 9:57 PM
Tiny
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When you get the tool, give me the long term trim percentage readings at idle and at 1200 RPM.

Roy
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Wednesday, September 25th, 2019 AT 5:49 AM
Tiny
DOCTORD453
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Well, I can’t seem to locate a scan tool with live data at this time.
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Thursday, October 3rd, 2019 AT 11:26 AM
Tiny
DOCTORD453
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I can push the gas to the floor and it will only rev to about 3,000 rpm's.
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Thursday, October 3rd, 2019 AT 11:27 AM
Tiny
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Did you replace the cat converters?

Roy
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Thursday, October 3rd, 2019 AT 12:17 PM
Tiny
DOCTORD453
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Yes. The two front ones. The y pipe. Exhaust is strong coming out of muffler. There doesn’t seem to be any blockage through the exhaust.
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Thursday, October 3rd, 2019 AT 12:21 PM
Tiny
ASEMASTER6371
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Okay, that is determined by doing a back-pressure test. You insert a back pressure gauge in place of the upstream O2 sensor. Anything over 1.5 lbs at 1500 RPM is no good.

Also, check the fuel pressure. Low fuel pressure will limit fuel.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy
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Thursday, October 3rd, 2019 AT 1:22 PM
Tiny
DOCTORD453
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I don’t have a back pressure gauge. Is it possible the hoses connecting the DPFE sensor are switched? Something I read said that the hoses don’t line up straight with the ports they connect to. That the hoses cross before connecting to the sensor. I didn’t know if this was true or not? Being different size hoses, I thought they would only connect to the correct size ports for each respective hose.
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Tuesday, October 15th, 2019 AT 11:35 AM
Tiny
ASEMASTER6371
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No, to the hoses.

You can rent one or buy one for the testing.

The backpressure gauge is not expensive at all.

Roy
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Wednesday, October 16th, 2019 AT 10:59 AM
Tiny
DOCTORD453
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Okay. I’ll look into getting one.
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Wednesday, October 16th, 2019 AT 3:18 PM
Tiny
ASEMASTER6371
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Keep me updated.

Roy
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Wednesday, October 16th, 2019 AT 3:34 PM

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