coolant temp sensor
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Senior User
Joined: Jul 2009
Posts: 246
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From: Lynnwood, WA
coolant temp sensor
Checking my motor over with the ODB II scanner I found that my coolant sensor is not working right. at first it showed 500 degrees F and then after running for a bit it went down to 50 degrees F. Not likely since its an 80 degree day. The guage works on the dash fine.
So first questions is where is this sensor, it must be different then the guage sensor and second what would it be called. I can only find one coolant sensor at the autoparts store.
So first questions is where is this sensor, it must be different then the guage sensor and second what would it be called. I can only find one coolant sensor at the autoparts store.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
I'm guessing you have an automatic. The PCM doesn't monitor coolant temps, so you can't read them. The exception is the manual -- you CAN read coolant temps with that trans. Most of us watch oil temp anyway. Try looking at that one.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Junk. My ScanGauge does the same thing. If you absolutely HAVE to read coolant temps, there is a plug on the side of the waterpump where you can install a sensor and an external gauge, or if you put in a ScanGauge, you can read the sensor with it directly.
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Senior User
Joined: Jul 2009
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From: Lynnwood, WA
I don't need to, just trying to figure out why my truck runs so rich. Someone told me that the oil temp sensors can go out causing a "choke" like condition. When I was in there checking that sensor I noticed coolant and thought I would check that one as well.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Diesels control power by fuel alone. Because of that, the fuel/air ratio can vary by a huge amount compared to a gasser.
And I'm curious what you mean as well.
And I'm curious what you mean as well.
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Senior User
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From: Lynnwood, WA
after about 100 miles my fender behind the dually starts to turn black.
I can see smoke out of my mirror under any acceleration, and the entire freeway can see it if I WOT.
I can see smoke out of my mirror under any acceleration, and the entire freeway can see it if I WOT.
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Senior User
Joined: Jul 2009
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From: Lynnwood, WA
so here is more info
I have stage II split shot injectors installed. These are standard split shot with drilled out holes. I have had Bill from Powerhungry try to tune it but it just won't respond like it should.
He thinks one of my new injectors is weak and allowing it to pop early. Jim Rose said he would look them over if I pulled them but I am going to do a compression test first to rule that out.
Fuel pressure on the rail is 60 psi.
high pressure oil pressure is 500 idle and goes up to 2700 - 3100 under wot.
Boost hits about 22lbs at wot.
I installed one of those sever duty AIS systems and am really dissapointed. I think that is causing some of my pyro temp issues. Brand new filter pulls the meter 50% right away. The k&n never moved the meter at all.
I have stage II split shot injectors installed. These are standard split shot with drilled out holes. I have had Bill from Powerhungry try to tune it but it just won't respond like it should.
He thinks one of my new injectors is weak and allowing it to pop early. Jim Rose said he would look them over if I pulled them but I am going to do a compression test first to rule that out.
Fuel pressure on the rail is 60 psi.
high pressure oil pressure is 500 idle and goes up to 2700 - 3100 under wot.
Boost hits about 22lbs at wot.
I installed one of those sever duty AIS systems and am really dissapointed. I think that is causing some of my pyro temp issues. Brand new filter pulls the meter 50% right away. The k&n never moved the meter at all.
Smokin
Joined: Jun 2006
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Alright, that definitely adds another dimension.
I am unfamiliar with Stage II injectors and therefore extremely unqualified to help you. Does sound like an excessive amount of unburned fuel is getting dumped in there though.
How hot do your exhaust temps get? AIS...never heard of it. You mean AFE? You can switch over to a 6637 paper filter, its what the majority of us use for maximum airflow.
I am unfamiliar with Stage II injectors and therefore extremely unqualified to help you. Does sound like an excessive amount of unburned fuel is getting dumped in there though.
How hot do your exhaust temps get? AIS...never heard of it. You mean AFE? You can switch over to a 6637 paper filter, its what the majority of us use for maximum airflow.
Post Fiend
Joined: Feb 2007
Posts: 7,191
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From: Blairsville,Ga
I can't imagine the AIS being the problem.That's what I run ( think a few others do also) with no issues although I am mostly stock
I did have to open up some more intake air flow to keep it from pulling the filter minder down
I did have to open up some more intake air flow to keep it from pulling the filter minder down
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
The AIS doesn't flow as much as folks think, from what I've been observing. Now, you didn't say you had bigger injectors! But I think you need to start looking at a boost leak. Only getting 22psi from stage 2s is an issue. Are you running a stock turbo?? I'm not surprised at all that you're getting black smoke with stage 2s and only 22psi!
Thread Starter
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Senior User
Joined: Jul 2009
Posts: 246
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From: Lynnwood, WA
Alright, that definitely adds another dimension.
I am unfamiliar with Stage II injectors and therefore extremely unqualified to help you. Does sound like an excessive amount of unburned fuel is getting dumped in there though.
How hot do your exhaust temps get? AIS...never heard of it. You mean AFE? You can switch over to a 6637 paper filter, its what the majority of us use for maximum airflow.
I am unfamiliar with Stage II injectors and therefore extremely unqualified to help you. Does sound like an excessive amount of unburned fuel is getting dumped in there though.
How hot do your exhaust temps get? AIS...never heard of it. You mean AFE? You can switch over to a 6637 paper filter, its what the majority of us use for maximum airflow.
www.dpppower.com "For 1997-2003 7.3L Split Shot Power Stroke Injectors. Nozzle Upgrade adds approx. 50hp using
Brand New 80% Larger 7 hole Power Stroke nozzles."
AIS is Air Induction System, ford offers a super filter.
https://www.ford-trucks.com/article/...erstrokes.html
Thread Starter
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Senior User
Joined: Jul 2009
Posts: 246
Likes: 1
From: Lynnwood, WA
The AIS doesn't flow as much as folks think, from what I've been observing. Now, you didn't say you had bigger injectors! But I think you need to start looking at a boost leak. Only getting 22psi from stage 2s is an issue. Are you running a stock turbo?? I'm not surprised at all that you're getting black smoke with stage 2s and only 22psi!
The black smoke is only one symptom. hard cold starts, loping for a second to many seconds after it starts. milage around 10 towing or not. pyro runs about 800 no load and hits 1200 fast when pulling a hill with my small trailer.
I bought that AIS fender foam piece so I will cut a 3.5 inch hole in the side and see if that get the temps down and reduces the pull on the filter replacment meter. if that doesn't work I will build my own "cold air" system I guess.