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Toyodaaddict's 1980 Toyota "The Blue Truck"
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<blockquote data-quote="toyodaaddict" data-source="post: 1568198" data-attributes="member: 18655"><p>Having done everything I know to do over the last year, the engine has a couple strange issues with the idle I cant figure out and more importantly It has temperature issues. It gets Hot. </p><p></p><p> It generally runs between 180-190 on the street, sometimes hotter when pulling long steep hills. It goes up to 205+ up hill on logging roads. I've only had it on the trail once and it ran a pretty constant 185 crawling around. </p><p></p><p> 20+ degree temperature spikes just cruising logging roads cant be good. Another strange thing about it is the temp reacts to the position of the climate control switch for the heater. I DD a 22R and it runs steady 180-185 all day everyday.</p><p></p><p></p><p>I don't think the cooling system is the problem (assuming something isn't plugged up). </p><p></p><p>This is what Ive done to try and cool it down,</p><p></p><p>New 3 core radiator</p><p>radiator cap</p><p>Dual stage thermostat</p><p>fan shroud</p><p>fan clutch x2</p><p>water pump x2</p><p>All new hoses/Toyota hose clamps</p><p>Replaced heater valve (used part)</p><p>Verified no coolant loss</p><p></p><p>For the idle I replaced </p><p></p><p>o2 sensor (denso)</p><p>EGR is new (Toyota)</p><p>TPS is new (Toyota)</p><p>idle air control valve</p><p></p><p>The IACV fixed the constant idle fluctuation but now I have low (400rpm) idle on warm starts and sometimes when coming to a stop before reaching full running temp. </p><p></p><p>Another idle problem I cant figure out is when coming to a stop my idle drops to about 500 RPM then recovers to 950.</p><p></p><p><img src="https://i.imgur.com/v03gA7fm.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p> <img src="https://i.imgur.com/IsY1Acnt.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="https://i.imgur.com/e95Vqcxm.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="https://i.imgur.com/jWkCkG1m.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="https://i.imgur.com/TjTk00Rm.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="toyodaaddict, post: 1568198, member: 18655"] Having done everything I know to do over the last year, the engine has a couple strange issues with the idle I cant figure out and more importantly It has temperature issues. It gets Hot. It generally runs between 180-190 on the street, sometimes hotter when pulling long steep hills. It goes up to 205+ up hill on logging roads. I've only had it on the trail once and it ran a pretty constant 185 crawling around. 20+ degree temperature spikes just cruising logging roads cant be good. Another strange thing about it is the temp reacts to the position of the climate control switch for the heater. I DD a 22R and it runs steady 180-185 all day everyday. I don't think the cooling system is the problem (assuming something isn't plugged up). This is what Ive done to try and cool it down, New 3 core radiator radiator cap Dual stage thermostat fan shroud fan clutch x2 water pump x2 All new hoses/Toyota hose clamps Replaced heater valve (used part) Verified no coolant loss For the idle I replaced o2 sensor (denso) EGR is new (Toyota) TPS is new (Toyota) idle air control valve The IACV fixed the constant idle fluctuation but now I have low (400rpm) idle on warm starts and sometimes when coming to a stop before reaching full running temp. Another idle problem I cant figure out is when coming to a stop my idle drops to about 500 RPM then recovers to 950. [img]https://i.imgur.com/v03gA7fm.jpg[/img] [img]https://i.imgur.com/IsY1Acnt.jpg[/img] [img]https://i.imgur.com/e95Vqcxm.jpg[/img] [img]https://i.imgur.com/jWkCkG1m.jpg[/img] [img]https://i.imgur.com/TjTk00Rm.jpg[/img] [/QUOTE]
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