Kain
3/4 ton status
Exhaust leak will make systemic "hey too much air add more fuel! " look at plugs they don't lie....
CK5
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my holley sniper story from the start --- UPDATE : the story END'S NOW !
- Thread starter sweetk30
- Start date
stock tbi exhaust manifolds in real good shape with o2 in driver side . brand new y-pipe with 2 brand new donuts showing no black leaks or feeling air leaking .
engine coolant to air temp is way off on dead cold engine . showing 18-22 degree colder on intake air temp over coolant.
have to pull a few plugs and look i guess.
engine coolant to air temp is way off on dead cold engine . showing 18-22 degree colder on intake air temp over coolant.
have to pull a few plugs and look i guess.
Kain
3/4 ton status
I didn't think my exhaust was leaking until pulled plugs ,Fitech showed 14.3 afr
Plugs where black
Plugs where black
i even used gaskets from heads to manifolds .
look what just popped up ...... same problem as me .
wow some of these guys are dumb as a box of rocks .
it dont need to read that low . . . .
what a noob . . . next guy sets him stright .
Car hasn't been started in 2 days. its around 30 degrees out side. turned key on and CTS is reading 52 degrees and MAT is reading 32 degrees. why would the CTS be so far off?
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Ulises Martinez Engine blocks hold heat so thete may be a temp difference. Mine was 10 degrees off today
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Like · 1h
Kevin Nice Coolant is not going to change temperature as rapidly as the air temp!
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Like · 1h
Ulises Martinez Atmospheirc temp vs surface or subject will alwayd vary
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Like · 1h
Daniel Gillean so 2 days isnt long enough for the coolant to be the same as the outside air?
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Like · 1h
Kevin Nice Daniel Gillean I’m just saying if temp recently changed that could be why! I don’t know you circumstances. Also Possibly cts may have different limits.
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Like · 1h
Daniel Gillean temp dropped yesterday about 20 degrees, its been about 16 hours since it dropped
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Like · 1h
Kevin Nice Daniel Gillean I’m thinking it’s the limits of the coolant temperature sensor. No need to read any lower.
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Like · 1h
Ryan Hedge That’s false. They go to -40 and there’s several reasons why it needs to read lower than 52 deg.
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Like · 20m · Edited
Ulises Martinez Thermal dynamics vary
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Like · 1h
Ulises Martinez Same reason the frost line is X amount of inches beneath the surface.
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Michael Wiggett Is the car outside, or in a garage?
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Like · 1h
Daniel Gillean car is outside just under carport.
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Like · 1h
Rodger Fromm I would guess possibly the lower limit of the temp sensor?
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Like · 45m
Alan Reinken Ecu is junk just went through this on a customer car replacing sniper unit fixed the issue. Same exact symptoms as you’re experiencing.
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Like · 42m
Ulises Martinez I ecu freezes at cold temps I let it run then shut the car off and fire it up again
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Like · 41m
wow some of these guys are dumb as a box of rocks .
it dont need to read that low . . . .
what a noob . . . next guy sets him stright . Car hasn't been started in 2 days. its around 30 degrees out side. turned key on and CTS is reading 52 degrees and MAT is reading 32 degrees. why would the CTS be so far off?
"}">LikeCommentShare
Comments
Ulises Martinez Engine blocks hold heat so thete may be a temp difference. Mine was 10 degrees off today
Manage
Like · 1h
Kevin Nice Coolant is not going to change temperature as rapidly as the air temp!
Manage
Like · 1h
Ulises Martinez Atmospheirc temp vs surface or subject will alwayd vary
Manage
Like · 1h
Daniel Gillean so 2 days isnt long enough for the coolant to be the same as the outside air?
Manage
Like · 1h
Kevin Nice Daniel Gillean I’m just saying if temp recently changed that could be why! I don’t know you circumstances. Also Possibly cts may have different limits.
Manage
Like · 1h
Daniel Gillean temp dropped yesterday about 20 degrees, its been about 16 hours since it dropped
Manage
Like · 1h
Kevin Nice Daniel Gillean I’m thinking it’s the limits of the coolant temperature sensor. No need to read any lower.
Manage
Like · 1h
Ryan Hedge That’s false. They go to -40 and there’s several reasons why it needs to read lower than 52 deg.
Manage
Like · 20m · Edited
Ulises Martinez Thermal dynamics vary
Manage
Like · 1h
Ulises Martinez Same reason the frost line is X amount of inches beneath the surface.
Manage
Like · 1h
Michael Wiggett Is the car outside, or in a garage?
Manage
Like · 1h
Daniel Gillean car is outside just under carport.
Manage
Like · 1h
Rodger Fromm I would guess possibly the lower limit of the temp sensor?
Manage
Like · 45m
Alan Reinken Ecu is junk just went through this on a customer car replacing sniper unit fixed the issue. Same exact symptoms as you’re experiencing.
Manage
Like · 42m
Ulises Martinez I ecu freezes at cold temps I let it run then shut the car off and fire it up again
Manage
Like · 41m
guys on f-b page are now saying they should be within 2-3 * of each other . also the say it should be -40* and +260* when testing unpluged and shorted . . . . well mine shows low errr and never gives a high .
only posting this stuff to keep track of it for my self and others fallowing and or searching later .
only posting this stuff to keep track of it for my self and others fallowing and or searching later .
pulled 2 plugs per side per bank .
plugs #1 & #3 driver side
and
plugs #2 & #4 pass side
so i got a mix of both sides and both halfs of the duel plane intake . other than burrning a tad bit of oil on the outer metal threaded ring section from being a brand new engine breaking in the porcelain section was still some white mostly tan and 1 or 2 had a tiny brown spot on the tan .
i am using acdelco rapid fire #14 plugs with the msd dist / blaster 2 coil and 8.8mm msd wires .
she has only gone threw 1/2 qrt of oil in the first around 200 miles and i topped it off and it hasn't lost any i can tell since then and i am close to the 500 mile mark for the first oil change and dump the 30w break in oil high zinc content and phosphorus levels AKA ZDDP stuff.
plugs #1 & #3 driver side
and
plugs #2 & #4 pass side
so i got a mix of both sides and both halfs of the duel plane intake . other than burrning a tad bit of oil on the outer metal threaded ring section from being a brand new engine breaking in the porcelain section was still some white mostly tan and 1 or 2 had a tiny brown spot on the tan .
i am using acdelco rapid fire #14 plugs with the msd dist / blaster 2 coil and 8.8mm msd wires .
she has only gone threw 1/2 qrt of oil in the first around 200 miles and i topped it off and it hasn't lost any i can tell since then and i am close to the 500 mile mark for the first oil change and dump the 30w break in oil high zinc content and phosphorus levels AKA ZDDP stuff.
little update on the temp sensor stuff . they emailed me back and said the same thing as they told this guy on the f-b page . i copy and pasted it here same as what they sent me basically .
holley tech team on f-b : Air and coolant temperature will not necessarily match, even after sitting for a while. Thermal dynamics can be confusing, but is really worth researching. Ambient temperature of 2 different materials can be 2 different values in the same climate.
another guy on f-b calling this answer bogus basically like me : In all fairness...if it's 30* outside and the car has been sitting for 2 days in said temp...the cts should be reading pretty darn close to 30. Not 20* higher.
in the years i was in a shop as a prof tech / mechanic i didn't do a lot of diagnostic computer stuff but i did my fair bit of it . and factory stuff was WAY CLOSER than the stuff holley is trying to shove down our mouth .
i fired off a email back to the tech guy and specifically typed out my points of concern and said fire this off to who ever and get back to me with a SOLID answer and here is my personal cell phone #
i also told them in under or at 500 miles i have gone threw 80 gal of gas that's 6.25 mpg average people !
my old gm tbi got better mileage with the same gears in the same axles and 35" or 38" tires under it over my skinny 33" tires . i am glad i did 2 tanks at this point or i would be stopping for fuel every other trip out almost over my old truck with 1 20 gal tank .
i even told them i am so un-trusting of this unit i have a tow truck company phone # in my cell phone for when it will break down on me . and i will be out a daily driver and how will i plow my driveway i would then have to hire out to be done .
i feel like this guy in the video that was posted up . https://ck5.com/forums/threads/wow-what-a-disgraceful-unethical-dodge-dealership.335860/
i think i need to find a nice fuel pressure regulator to take the 60-65psi and drop it to 5-7 psi range for a edelbrock carb to get me by for the rest of the winter season .
and i will NOT buy a holley / earl's / mr.gasket / quick fuel / nos unit since there all holley owned brands .
holley tech team on f-b : Air and coolant temperature will not necessarily match, even after sitting for a while. Thermal dynamics can be confusing, but is really worth researching. Ambient temperature of 2 different materials can be 2 different values in the same climate.
another guy on f-b calling this answer bogus basically like me : In all fairness...if it's 30* outside and the car has been sitting for 2 days in said temp...the cts should be reading pretty darn close to 30. Not 20* higher.
in the years i was in a shop as a prof tech / mechanic i didn't do a lot of diagnostic computer stuff but i did my fair bit of it . and factory stuff was WAY CLOSER than the stuff holley is trying to shove down our mouth .
i fired off a email back to the tech guy and specifically typed out my points of concern and said fire this off to who ever and get back to me with a SOLID answer and here is my personal cell phone #
i also told them in under or at 500 miles i have gone threw 80 gal of gas that's 6.25 mpg average people !
my old gm tbi got better mileage with the same gears in the same axles and 35" or 38" tires under it over my skinny 33" tires . i am glad i did 2 tanks at this point or i would be stopping for fuel every other trip out almost over my old truck with 1 20 gal tank .i even told them i am so un-trusting of this unit i have a tow truck company phone # in my cell phone for when it will break down on me . and i will be out a daily driver and how will i plow my driveway i would then have to hire out to be done .
i feel like this guy in the video that was posted up . https://ck5.com/forums/threads/wow-what-a-disgraceful-unethical-dodge-dealership.335860/
i think i need to find a nice fuel pressure regulator to take the 60-65psi and drop it to 5-7 psi range for a edelbrock carb to get me by for the rest of the winter season .
and i will NOT buy a holley / earl's / mr.gasket / quick fuel / nos unit since there all holley owned brands .
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If it helps, I can check the IAT and CTS reported temps on my truck when I get home. Give you some concrete numbers. Truck has sat in the same spot for weeks, in the shade (like there has been any sun for days)...no chance there is a heat differential from it running. 
I can't imagine that passive cooling is very efficient for the IAT, since the intake tract is rubber/plastic, and it's behind the throttle plates, so I would think reported temp would be close to ambient. I can also record the ambient temp, although I don't particularly trust those cheapy thermometers to be super precise.
I can't imagine that passive cooling is very efficient for the IAT, since the intake tract is rubber/plastic, and it's behind the throttle plates, so I would think reported temp would be close to ambient. I can also record the ambient temp, although I don't particularly trust those cheapy thermometers to be super precise.
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i have had this same IR temp gun for years and she seemes to be spot on . this is way before the influx of super cheep units . its a raytek brand unit from prob 15 years ago .
and fyi is IAT not IAC . . .
and fyi is IAT not IAC . . .
Smartass. But correct.
But they seem to think that the difference in reported temperatures between the two sensors is "normal", correct? And your IR says otherwise. But I thought maybe you would be able to tell them that other GM sensors don't have the same differential, or we might find they do. And how well they line up with ambient temps.
But correct.But they seem to think that the difference in reported temperatures between the two sensors is "normal", correct? And your IR says otherwise. But I thought maybe you would be able to tell them that other GM sensors don't have the same differential, or we might find they do. And how well they line up with ambient temps.
my sniper handheld shows iat = intake air temp 32* / cts = coolant temp sensor 52* / truck body is 32* / air temp outside is 32* / truck hasnt started in over 24hr's .
then today i fired it up in the shop after being inside over night and it was 52* iat / 72* cts / air temp 52* / truck body 52* .
there unit is NOT reading correct / computer program is not programed correct / something is not correct . and even using 2 known good tbi ecm coolant temp sensors i for a 3-4* shift closet to the same readings matching was it .
then today i fired it up in the shop after being inside over night and it was 52* iat / 72* cts / air temp 52* / truck body 52* .
there unit is NOT reading correct / computer program is not programed correct / something is not correct . and even using 2 known good tbi ecm coolant temp sensors i for a 3-4* shift closet to the same readings matching was it .
I was amused by the vacuum reading...
And yes, my voltage was a little low, blower motor running on low, and cold out! It cranks fine, though.
And yes, my voltage was a little low, blower motor running on low, and cold out! It cranks fine, though.
Here’s another reference for you. My K5 has been sitting for a week or more. Clt and Iat within 5*. These are standard gm sensors.
Kain
3/4 ton status
My Fitech coolant temp sensor was 20 to 30 deg off or more I changed it to oreilys house brand and it is spot on with temp gun
i understand this . but i have tested 3 sensors with the holley being 1 and 2 good used working tbi sensors . plus the fact is its a DEFECTIVE BRAND NEW SYSTEM i am NOT required to buy my own replacement for there crap parts quality or bad ecm system being off . ITS THE FACT I AM RIGHT over a 20 dollar sensor or a bad ecu in the unit who knows but i am NOT spending anymore of my money on this until they say whats wrong and fix it . i also have stopped trying to tune the unit anymore with the help of others as i think its a waste if its not reading correctly .
i have a item i am waiting for a price quote on and if its good then i am getting one and putting it on my truck !
and it will be so cool 
T
tenderfoot
Guest
Proflow 4?
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