From: "Andre Garber" To: <80_series@sgiblab.sgi.com> Subject: Re: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Date sent: Tue, 23 Nov 1999 22:09:32 +0200 Send reply to: 80_series@sgiblab.sgi.com -----Original Message----- From: Mick Barson To: 80_series@sgiblab.sgi.com <80_series@sgiblab.sgi.com> Date: 23 November 1999 06:49 Subject: Re: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] >Ian B. wrote: > >> This is something I questioned a while ago. It seems 1HD-T's do use >> glowplugs in spite of being direct injected. The 1HD-FT's use the heater >> screen. >> >> Does anyone have a 1HD without glowplugs?. >> >> Ian B > > >Taking this thread further, does this heater screen ever wear out? or fail like >glow plugs. I realise its a heater element, but are they a reliable unit and >at what cost are they should it stop working? I have seen glow plugs fail but >the diesel still starts because of the others do the job, what happens if the >heater screen stops working, any way to bypass and still >start the diesel? > >Cheers >Mick (West Aussie) >1HD-FT Auto, >ickbar@southwest.com.au >http://www.southwest.com.au/~ickbar 1HD-FT and FTE do not have glow plugs, most likely because no space with 4 valves per cylinder... If one has Safari intercooler then no screen heater either ! Simply disconnected.. Most likely penalty is high emmisions initially. My personal experience is that my 1HD-FT with Safari intercooler has always started absolutely immediately. Worst temp here though is occasional minus 5-8 C on early winter morning. 1HD-T is still produced with LC100 for some African markets. ( Maybe others also ) Actually I have driven a LC100 variant with 1HD-T, a VX with all the trimmings, IFS skyhook Tems, leather, armrest cooler box, dual aircon etc etc. Dull performance though. ( No intercooler ) Andre Gangsters Paradise, South Africa HDJ80, 1HD-FT, OME, intercooler, snorkel, preluber, milemarker, HF VHF 29, EGT , 3rd batt, 4wd drawers, etc etc From: "Zeffer" To: <80_series@sgiblab.sgi.com> Subject: Re: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Date sent: Tue, 23 Nov 1999 23:03:56 -0000 Organization: Zeffinc-co Send reply to: 80_series@sgiblab.sgi.com ----- Original Message ----- From: Mick Barson > what happens if the heater screen stops working, any way to bypass and still > start the diesel? Hi all, The heater screen should work when the coolant temp. is below 40C/104F for a maximum of 90 seconds or until the coolant has reached the above temp. If the heater stops working, then unless the air temperature is well below freezing then it should still start normally but possibly with the symptoms described by Pieter. It is not the only cold aid on the 1HD-FTE. If the water temperature is cold a higher volume of fuel is injected. An intake air sensor does the same job. The increased fuel volume is not so much to aid cold starts but aids smooth running and driveability once fired up. A fuel temp. sensor is also fitted which allows higher fuel volumes at low revs. and, most importantly, at higher fuel temps, to maintain power output even when the fuel has expanded greatly. A fuel heater is also fitted to prevent waxing of the filter(s). A heater idle up switch is also fitted to my vehicle but apart from increasing the engine rpm. with the auto' in neutral, I don't know what it does. Neither do I know what the "viscous heater" pump does. This is belt driven with a magnetic clutch fitted and with two coolant pipes plumbed. I would be most grateful if someone could tell me its function. Another interesting feature of this engine is the intake air shut off valve which closes across the inlet manifold when the engine is shut down. This creates a vacuum in the cylinders so the engine comes to an immediate smooth stop with no rocking on its mountings [due to compression kick back]. Huw Williams aka. Zeffer zeffer[nospam]@totalise.co.uk To reply, remove "[nospam]" '98 100 diesel 1HD-FTE auto Active suspension VX trim moonroof,reverse sensor, tow bar. From: Couyant_George@emc.com To: 80_series@sgiblab.sgi.com Subject: RE: [80] 1HD-FTE notes Date sent: Thu, 25 Nov 1999 22:01:08 -0500 Send reply to: 80_series@sgiblab.sgi.com > They use a so called heat screen, a heat element in the air intake (never use > a startspray to get it going , there will just And the heating screen isn't there to help starting. It's there to assist the throttle response and idle speed right after starting. Cheers gc '97 HDJ80 - Melbourne Oz Date sent: Thu, 25 Nov 1999 22:29:29 +1100 To: 80_series@sgiblab.sgi.com From: Terence J Leeder Subject: Re: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Send reply to: 80_series@sgiblab.sgi.com At 12:41 23/11/99 +0800, you wrote: > >Taking this thread further, does this heater screen ever wear out? or fail like >glow plugs. I realise its a heater element, but are they a reliable unit and >at what cost are they should it stop working? I have seen glow plugs fail but >the diesel still starts because of the others do the job, what happens if the >heater screen stops working, any way to bypass and still start the diesel? > >Cheers >Mick (West Aussie) >1HD-FT Auto, >ickbar@southwest.com.au >http://www.southwest.com.au/~ickbar > G'Day Mick, The heater screen as used by Toyota is a very reliable system. Should it fail or a component that operates the heater screen fail I reckon you would still start a direct injection diezel in OZ with ease without it. It dosn't get very cold here unless your down the snow country amidst a blizzard. The only other issue if the heater fails is a slightly rougher warm up time. Stop worrying, go the step 6 and forget it! Regards TJL Sydney OZ From: Couyant_George@emc.com To: 80_series@sgiblab.sgi.com Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Date sent: Fri, 26 Nov 1999 08:45:00 -0500 Send reply to: 80_series@sgiblab.sgi.com > fail or a component that operates the heater screen fail I reckon you > would > still start a direct injection diezel in OZ with ease without it. It > dosn't > get very cold here unless your down the snow country amidst a blizzard. > The only other issue if the heater fails is a slightly rougher warm up > time. Not even that Terry. I haven't noticed any difference in starting or cold performance down to -5deg C. I did away with the heater screen after the first service. It's quite restrictive. Cheers gc '97 HDJ80 - Melbourne Oz From: "Willem-Jan Markerink" To: 80_series@sgiblab.sgi.com Date sent: Mon, 29 Nov 1999 18:36:15 +0100 Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Send reply to: 80_series@sgiblab.sgi.com On 26 Nov 99 at 8:45, Couyant_George@emc.com wrote: > > fail or a component that operates the heater screen fail I reckon you > > would > > still start a direct injection diezel in OZ with ease without it. It > > dosn't > > get very cold here unless your down the snow country amidst a blizzard. The > > only other issue if the heater fails is a slightly rougher warm up time. > > > Not even that Terry. I haven't noticed any difference in starting or cold > performance down to -5deg C. I did away with the heater screen after the first > service. It's quite restrictive. Can I 'defuse' it to see what happens at colder temperatures? Or does it rely on a fuse for more than just this item? Any plugs to pull? And in what order of magnitude is this extra restriction? How thick are the wires, or how dense the gaze? Could you feel a difference? -- Bye, Willem-Jan Markerink The desire to understand is sometimes far less intelligent than the inability to understand [note: 'a-one' & 'en-el'!] From: Couyant_George@emc.com To: 80_series@sgiblab.sgi.com Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Date sent: Mon, 29 Nov 1999 18:25:33 -0500 Send reply to: 80_series@sgiblab.sgi.com > Can I 'defuse' it to see what happens at colder temperatures? You could if you had a 1HD-FT. The 1HD-T doesn't get one (well not here in Aus). You guys get EGR to keep things warm. Cheers gc '97 HDJ80 - Melbourne Oz From: "Andre Garber" To: <80_series@sgiblab.sgi.com> Subject: Re: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Date sent: Tue, 30 Nov 1999 02:59:15 +0200 Send reply to: 80_series@sgiblab.sgi.com -----Original Message----- From: Willem-Jan Markerink To: 80_series@sgiblab.sgi.com <80_series@sgiblab.sgi.com> Date: 29 November 1999 09:24 Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] > Can I 'defuse' it to see what happens at colder temperatures? > Or does it rely on a fuse for more than just this item? > Any plugs to pull? > > And in what order of magnitude is this extra restriction? > How thick are the wires, or how dense the gaze? > Could you feel a difference? On the RHD model HDJ80 where the loom comes thru the fire wall, in proximity of the test connector there is a inline connector, single way meant for this purpose, ie make heater screen inoperative. It is quite distinctive, wire comes out of loom to connector and back into loom. It is the drive from emission cpu to the contactor that connects +ve to the screen heater. The wire color is black/orange, it is present in LHD and RHD, however might be in a different position on LHD. Andre Gangsters Paradise, South Africa HDJ80, 1HD-FT, OME, intercooler, snorkel, preluber, milemarker, HF VHF 29, EGT , 3rd batt, 4wd drawers, etc etc Date sent: Tue, 30 Nov 1999 15:15:24 +1100 To: 80_series@sgiblab.sgi.com From: Terence J Leeder Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Send reply to: 80_series@sgiblab.sgi.com At 08:45 26/11/99 -0500, TJL you wrote: >> fail or a component that operates the heater screen fail I reckon >> you would still start a direct injection diezel in OZ with ease >> without it. It dosn't get very cold here unless your down the >> snow country amidst a blizzard. >> The only other issue if the heater fails is a slightly rougher >> warm up time. >> >[GC Says]Not even that Terry. I haven't noticed any difference in starting or cold >performance down to -5deg C. I did away with the heater screen after the >first service. It's quite restrictive. > >Cheers >gc > >'97 HDJ80 - Melbourne Oz > > Hmmmm, Interesting GC, What did you replace the gap with? Did you have a spacer made up? Regards TJL Sydney OZ 1997 White GXL 1HD-FT TD, Manual, In Dash "Cup holder", Twine'd ARB Turbo Timer, ARB Comp, Kaymar'ed,TJM'ed, Heller'ed, Warn'ed, Safari'ed,OME'ed,Garmin GPS,Wiring upgrade, Radios 27 MHz,UHF,HF. Still a wish list for more. "Like, an Intercooler!" mailto:tjleeder@sia.net.au From: Couyant_George@emc.com To: 80_series@sgiblab.sgi.com Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Date sent: Tue, 30 Nov 1999 10:03:28 -0500 Send reply to: 80_series@sgiblab.sgi.com > Hmmmm, Interesting GC, What did you replace the gap with? > Did you have a spacer made up? Yes, made one up out of aluminum. That hit the rubbish bin (dust bin for the English language impaired ;-) when the intercooler was fitted. Spewing because it took me a while to make. Cheers gc '97 HDJ80 - Melbourne Oz Date sent: Fri, 03 Dec 1999 12:06:17 +1100 To: 80_series@sgiblab.sgi.com From: Terence J Leeder Subject: RE: [80] 1HD-FTE notes NOW Glow plugs/Heater screen [chat] Send reply to: 80_series@sgiblab.sgi.com At 18:36 29/11/99 +0100, you wrote: >On 26 Nov 99 at 8:45, Couyant_George@emc.com wrote: > >> > fail or a component that operates the heater screen fail I reckon you >> > would >> > still start a direct injection diezel in OZ with ease without it. It >> > dosn't >> > get very cold here unless your down the snow country amidst a blizzard. The >> > only other issue if the heater fails is a slightly rougher warm up time. >> > >> Not even that Terry. I haven't noticed any difference in starting or cold >> performance down to -5deg C. I did away with the heater screen after the >> first service. It's quite restrictive. > >Can I 'defuse' it to see what happens at colder temperatures? >Or does it rely on a fuse for more than just this item? >Any plugs to pull? > >And in what order of magnitude is this extra restriction? >How thick are the wires, or how dense the gaze? >Could you feel a difference? Willem the easiest way of testing is to disconnect the large wire that goes onto the heater element. cover the wire terminal so it won't short out and test away. As far as the restriction I suppose you will need to remove it and see for yourself. Good luck Regards TJL Sydney OZ 1997 White GXL 1HD-FT TD, Manual, In Dash "Cup holder", Twine'd ARB Turbo Timer, ARB Comp, Kaymar'ed,TJM'ed, Heller'ed, Warn'ed, Safari'ed,OME'ed,Garmin GPS,Wiring upgrade, Radios 27 MHz,UHF,HF. Still a wish list for more. "Like, an Intercooler!" mailto:tjleeder@sia.net.au