Glowing red hot exhaust manifold/ coolant gushing from radiator fill-up neck!!!

dgee509 · 04-15-2011, 04:18 AM

I haven't tried that, but I had good throttle response last night before I put the new plugs, wires, distributor cap, and rotor button on... wouldn't that indicate the GPS was functioning properly?

dgee509 · 04-15-2011, 04:49 AM

That was supposed to say tps instead of GPS... LOL. Stupid smart phone! Anyway, I discovered another piece to the puzzle... After taking out my thermostat, I ran the car and it is still very sluggish. This time though, I found that my exhaust manifold was literally glowing red! Stopped up cat? If so, why would that affect my coolant flow? Is there something more serious going on here? Any input would be greatly helpful...

Sonyps307 · 04-15-2011, 05:06 AM

Check timing I rebuild my motor and the distributor was off a few teeth. it run but like crap and I have a aftermarket header and two pipes was glowing red.

dgee509 · 04-15-2011, 05:20 AM

Thanks a lot, that helps a ton...

btwilson86 · 04-15-2011, 06:12 AM

Merged your 2 threads on the same topic

87hilux7mge · 04-16-2011, 08:54 AM

a glowing manifold is waaaaay advanced, ur running super lean basically. actually your fuel just isnt burning all the way, then its flowing into the manifold and being burnt there. do some tuning, check your dizzy. ur prolly reaching full advance at 2000 rpms or so, getting crappy burn rate readings from the 02 sensor, not to mention conflicting signals from the other sensors, and ur computer cant compensate the timing accordingly. get that right or say bye bye to your exhaust valves.

this would also explain the over heating, as u are essentially flash boiling your coolant, and possibly creating more air pockets in the passages. get a new thermostat, check you timing, make sure its dead on (retard a few * if anything) then purge your coolant system.

hit back with results.

04-15-2011, 06:12 AM	#5
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Merged your 2 threads on the same topic __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

04-16-2011, 08:54 AM	#6
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	a glowing manifold is waaaaay advanced, ur running super lean basically. actually your fuel just isnt burning all the way, then its flowing into the manifold and being burnt there. do some tuning, check your dizzy. ur prolly reaching full advance at 2000 rpms or so, getting crappy burn rate readings from the 02 sensor, not to mention conflicting signals from the other sensors, and ur computer cant compensate the timing accordingly. get that right or say bye bye to your exhaust valves. this would also explain the over heating, as u are essentially flash boiling your coolant, and possibly creating more air pockets in the passages. get a new thermostat, check you timing, make sure its dead on (retard a few * if anything) then purge your coolant system. hit back with results. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

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04-15-2011, 04:18 AM	#1
dgee509 Stock Join Date: Apr 2011 Location: killen, al Posts: 16	I haven't tried that, but I had good throttle response last night before I put the new plugs, wires, distributor cap, and rotor button on... wouldn't that indicate the GPS was functioning properly?

04-15-2011, 04:49 AM	#2
dgee509 Stock Join Date: Apr 2011 Location: killen, al Posts: 16	That was supposed to say tps instead of GPS... LOL. Stupid smart phone! Anyway, I discovered another piece to the puzzle... After taking out my thermostat, I ran the car and it is still very sluggish. This time though, I found that my exhaust manifold was literally glowing red! Stopped up cat? If so, why would that affect my coolant flow? Is there something more serious going on here? Any input would be greatly helpful...

04-15-2011, 05:06 AM	#3
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	Check timing I rebuild my motor and the distributor was off a few teeth. it run but like crap and I have a aftermarket header and two pipes was glowing red.

04-15-2011, 05:20 AM	#4
dgee509 Stock Join Date: Apr 2011 Location: killen, al Posts: 16	Thanks a lot, that helps a ton...