Home » Public Forums » GMCnet » Holley EFI Throttle Position Sensor
| Holley EFI Throttle Position Sensor [message #366019] |
Mon, 09 August 2021 13:42  |
rjw
Messages: 697
Registered: September 2005
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I might need to purchase a "Holley EFI Throttle Position Sensor" for my Howell EFI. Does anyone know the model# of the Holly Throttle body in Howell's 455 GMC kit, or a part number for the Throttle Position Sensor used in the kit?
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366029 is a reply to message #366019] |
Mon, 09 August 2021 17:08  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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Fastest way is to call Howell and they should be able to supply them.
We generally keep couple,
On Mon, Aug 9, 2021 at 11:42 AM RJW wrote:
> I might need to purchase a "Holley EFI Throttle Position Sensor" for my
> Howell EFI. Does anyone know the model# of the Holly Throttle body in
> Howell's 455 GMC kit, or a part number for the Throttle Position Sensor
> used in the kit?
>
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum
> system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
> heaters.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Applied/GMC
jimk@appliedairfilters.com
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366035 is a reply to message #366029] |
Mon, 09 August 2021 19:16 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Speaking of which: I noticed yesterday, in my land/sea container shed, a
box containing the Holley throttle body I replaced with a Rochester when I
installed the Cad 500 -- 'cause it probably couldn't have supplied gas fast
enough for the Cad. Does it have any value to anyone? Make me an offer...
Ken H.
On Mon, Aug 9, 2021 at 6:08 PM Jim Kanomata wrote:
> Fastest way is to call Howell and they should be able to supply them.
> We generally keep couple,
>
> On Mon, Aug 9, 2021 at 11:42 AM RJW wrote:
>
>> I might need to purchase a "Holley EFI Throttle Position Sensor" for my
>> Howell EFI. Does anyone know the model# of the Holly Throttle body in
>> Howell's 455 GMC kit, or a part number for the Throttle Position Sensor
>> used in the kit?
>>
>> --
>> Richard
>> 76 Palm Beach
>> SE Michigan
>> www.PalmBeachGMC.com
>>
>>
>> Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum
>> system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
>> heaters.
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
>
>
> --
> Jim Kanomata ASE
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.gmcrvparts.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: Holley EFI Throttle Position Sensor [message #366051 is a reply to message #366019] |
Tue, 10 August 2021 09:43 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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rjw wrote on Mon, 09 August 2021 14:42I might need to purchase a "Holley EFI Throttle Position Sensor" for my Howell EFI. Does anyone know the model# of the Holly Throttle body in Howell's 455 GMC kit, or a part number for the Throttle Position Sensor used in the kit?
Upon further review (thanks DuckDuckGo), it appears that the TPS I need is a standard GM part for lots of GM Throttle Body EFI vehicles. Not real expensive at less than $50 and available today at numerous auto parts stores.
Thanks to all that responded to my query.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366053 is a reply to message #366035] |
Tue, 10 August 2021 09:55 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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Senior Member |
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Ken Henderson wrote on Mon, 09 August 2021 20:16Speaking of which: I noticed yesterday, in my land/sea container shed, a
box containing the Holley throttle body I replaced with a Rochester when I
installed the Cad 500 -- 'cause it probably couldn't have supplied gas fast
enough for the Cad. Does it have any value to anyone? Make me an offer...
Ken H.
Ken,
I'm interested in the Holly throttle body. I tried to email you, but both addresses I had bounced. I'll try PM.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: Holley EFI Throttle Position Sensor [message #366107 is a reply to message #366097] |
Fri, 13 August 2021 12:05 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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George Beckman wrote on Thu, 12 August 2021 21:08It's a TH39:
Standard Motor Products TH39 Throttle Position Sensor
George,
That's it! Bought one from O-Reilly's for less than $50. But a bad TPS is probably not the cause of my random rough running engine problems.
While reviewing some recent data logs with WhatsUp I see that I have Malfunction Code 23 which is IAT LO. That code did not trigger the SES light so I didn't notice it until I pulled up the "Malfunction Codes" screen during playback.
I added a Intake Air Temperature sensor to my system over 10 years ago. I don't remember how I obtained the IAT sensor I installed.
I'm guessing that it's a standard GM part like the TPS.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: Holley EFI Throttle Position Sensor [message #366111 is a reply to message #366107] |
Fri, 13 August 2021 13:51 |
Bill Van Vlack
Messages: 419
Registered: September 2015
Location: Guemes Island, Washington
Karma: 14
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Check for a loose connection at the IAT. Dump your datalog to a csv file (WUD, under 'Analysis') and look at IAT temps. I think 'LO' means an open, or 0 degrees. I don't think the IAT is in play during closed loop since in CL fueling is controlled by NB02 or WB02. In open loop, intake air temp is used to determine the weight of air in the injector pulse width calculations.
Bill Van Vlack
'76 Royale; Guemes Island, Washington; Twin bed, full (DS) side bath, Brazilian Redwood counter and settee tops,455, 6KW generator; new owner a/o mid November 2015.
[Updated on: Fri, 13 August 2021 14:31] Report message to a moderator |
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366112 is a reply to message #366111] |
Fri, 13 August 2021 14:11 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
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I don't use an IAC at all, the light is flashing all the time.
I doubt thats a problem.
________________________________
From: Bill Van Vlack
Sent: Friday, August 13, 2021 1:51 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Re: Holley EFI Throttle Position Sensor
Check for a loose connection at the IAC. Dump your datalog to a csv file (WUD, under 'Analysis') and look at IAT temps. I think 'LO' means an open, or
0 degrees. I don't think the IAT is in play during closed loop since in CL fueling is controlled by NB02 or WB02. In open loop, intake air temp is
used to determine the weight of air in the injector pulse width calculations.
--
Bill Van Vlack
'76 Royale; Guemes Island, Washington; Twin bed, full (DS) side bath, Brazilian Redwood counter and settee tops,455, 6KW generator; new owner a/o mid
November 2015.
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: Holley EFI Throttle Position Sensor [message #366117 is a reply to message #366111] |
Fri, 13 August 2021 15:35 |
rjw
Messages: 697
Registered: September 2005
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Bill Van Vlack wrote on Fri, 13 August 2021 14:51Check for a loose connection at the IAT. Dump your datalog to a csv file (WUD, under 'Analysis') and look at IAT temps. I think 'LO' means an open, or 0 degrees. I don't think the IAT is in play during closed loop since in CL fueling is controlled by NB02 or WB02. In open loop, intake air temp is used to determine the weight of air in the injector pulse width calculations.
I feel a bit stupid here. I have not fooled with my EFI with EBL for close to 10 years and as it turns out my mind is not the steel trap that it once was.
I think I set the code when I had the air cleaner off (unplugged the IAT) and turned the ignition key to ON. Now I have no idea how to reset the code now that the IAT connector was reattached.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366118 is a reply to message #366114] |
Fri, 13 August 2021 15:41 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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The whoops is all mine, I meant the IAT, I have an IAC
Dang TLA's
________________________________
From: Bill Van Vlack
Sent: Friday, August 13, 2021 2:39 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Re: Holley EFI Throttle Position Sensor
Keith V wrote on Fri, 13 August 2021 14:11
> I don't use an IAC at all, the light is flashing all the time.
Whoops! should have said 'IAT'; fixed it above.
I'm surprised it idles without an IAC; or did you mean IAT? :d
--
Bill Van Vlack
'76 Royale; Guemes Island, Washington; Twin bed, full (DS) side bath, Brazilian Redwood counter and settee tops,455, 6KW generator; new owner a/o mid
November 2015.
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366119 is a reply to message #366117] |
Fri, 13 August 2021 16:15 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Hey, Richard, welcome to the Old Codgers' Club. Sure glad to finally have
some company here!
Ken H.
On Fri, Aug 13, 2021 at 4:35 PM RJW wrote:
> Bill Van Vlack wrote on Fri, 13 August 2021 14:51
>> Check for a loose connection at the IAT. Dump your datalog to a csv file
> (WUD, under 'Analysis') and look at IAT temps. I think 'LO' means an
>> open, or 0 degrees. I don't think the IAT is in play during closed loop
> since in CL fueling is controlled by NB02 or WB02. In open loop, intake air
>> temp is used to determine the weight of air in the injector pulse width
> calculations.
>
> I feel a bit stupid here. I have not fooled with my EFI with EBL for
> close to 10 years and as it turns out my mind is not the steel trap that it
> once was.
>
> I think I set the code when I had the air cleaner off (unplugged the IAT)
> and turned the ignition key to ON. Now I have no idea how to reset the code
> now that the IAT connector was reattached.
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum
> system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
> heaters.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366159 is a reply to message #366119] |
Sun, 15 August 2021 11:42 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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Ken Henderson wrote on Fri, 13 August 2021 17:15Hey, Richard, welcome to the Old Codgers' Club. Sure glad to finally have
some company here!
Ken H.
> I feel a bit stupid here. I have not fooled with my EFI with EBL for
> close to 10 years and as it turns out my mind is not the steel trap that it
> once was.
>
> I think I set the code when I had the air cleaner off (unplugged the IAT)
> and turned the ignition key to ON. Now I have no idea how to reset the code
> now that the IAT connector was reattached.
[color=blue]> --
[color=blue]> Richard
Ken,
It's finally happening, I'm old enough to be a member of the "Old Codgers' Club". I'm not sure that I am happy about that, but at least I am still around to be annoyed by that fact.
Thanks for the warm welcome!
Richard
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366160 is a reply to message #366159] |
Sun, 15 August 2021 11:50 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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How old is that, anyway? Asked he who just finished erecting a 10' x 14'
gazebo on the patio.
Jim Hupy
Salem, Oregon
On Sun, Aug 15, 2021, 9:42 AM RJW wrote:
> Ken Henderson wrote on Fri, 13 August 2021 17:15
>> Hey, Richard, welcome to the Old Codgers' Club. Sure glad to finally
> have
>> some company here!
>>
>> Ken H.
>>
>>
>>> I feel a bit stupid here. I have not fooled with my EFI with EBL for
>>> close to 10 years and as it turns out my mind is not the steel trap
> that it
>>> once was.
>>>
>>> I think I set the code when I had the air cleaner off (unplugged the
> IAT)
>>> and turned the ignition key to ON. Now I have no idea how to reset
> the code
>>> now that the IAT connector was reattached.
[color=teal]>> > --
[color=teal]>> > Richard
>
> Ken,
> It's finally happening, I'm old enough to be a member of the "Old Codgers'
> Club". I'm not sure that I am happy about that, but at least I am still
> around to be annoyed by that fact.
>
> Thanks for the warm welcome!
> Richard
>
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum
> system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
> heaters.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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| [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366161 is a reply to message #366160] |
Sun, 15 August 2021 13:15 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Jim,
I don't know the official age, but I THOUGHT I was well qualified at 84.
Then, during a routine visit to the doctor a couple of weeks ago I met an
87 yo there for a similar routine visit -- he's still laying bricks!!! So
now, I'm back to "Young Whippersnapper" status. That gazebo sounds like
you're even moreso! Hallelujah!
Ken H.
On Sun, Aug 15, 2021 at 12:50 PM James Hupy wrote:
> How old is that, anyway? Asked he who just finished erecting a 10' x 14'
> gazebo on the patio.
> Jim Hupy
> Salem, Oregon
>
> On Sun, Aug 15, 2021, 9:42 AM RJW wrote:
>
>> Ken Henderson wrote on Fri, 13 August 2021 17:15
>>> Hey, Richard, welcome to the Old Codgers' Club. Sure glad to finally
>> have
>>> some company here!
>>>
>>> Ken H.
>>>
>>>
>>>> I feel a bit stupid here. I have not fooled with my EFI with EBL
> for
>>>> close to 10 years and as it turns out my mind is not the steel trap
>> that it
>>>> once was.
>>>>
>>>> I think I set the code when I had the air cleaner off (unplugged the
>> IAT)
>>>> and turned the ignition key to ON. Now I have no idea how to reset
>> the code
>>>> now that the IAT connector was reattached.
[color=royalblue]>>> > --
[color=royalblue]>>> > Richard
>>
>> Ken,
>> It's finally happening, I'm old enough to be a member of the "Old
> Codgers'
>> Club". I'm not sure that I am happy about that, but at least I am still
>> around to be annoyed by that fact.
>>
>> Thanks for the warm welcome!
>> Richard
>>
>> --
>> Richard
>> 76 Palm Beach
>> SE Michigan
>> www.PalmBeachGMC.com
>>
>>
>> Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum
>> system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
>> heaters.
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Re: Holley EFI Throttle Position Sensor [message #366177 is a reply to message #366161] |
Mon, 16 August 2021 13:23 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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Senior Member |
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Ken Henderson wrote on Sun, 15 August 2021 14:15Jim,
I don't know the official age, but I THOUGHT I was well qualified at 84.
Then, during a routine visit to the doctor a couple of weeks ago I met an
87 yo there for a similar routine visit -- he's still laying bricks!!! So
now, I'm back to "Young Whippersnapper" status. That gazebo sounds like
you're even moreso! Hallelujah!
Ken H.
That sounds much better, the "Young Whippersnapper", vs the "Old Codgers' Club".
Pencil me in for the "Young Whippersnapper" club!
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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