My 85 GT with stock 2.8(has headers)will start up and run like crazy. But,if i set at a drive thru,or wait with thd motor running with the boss-lady is in the store,first,my "check engine "light comes on,then,when i go to pull out,the motor quits w/i several seconds. If i let it cool down for 15 minutes or so, it starts right up. Ignition module in distributor? Thoughts?
Do you have any wrap applied to the headers (more specifically, the exhaust crossover), or any other form of heat barrier mounted to protect the distributor/ICM?
[This message has been edited by Patrick (edited 01-28-2020).]
Do you have any wrap applied to the headers (more specifically, the exhaust crossover), or any other form of heat barrier mounted to protect the distributor/ICM?
No sir. And,when i checked the temperature of the distributor, it was 190f
No sir. And,when i checked the temperature of the distributor, it was 190f
Considering that 195°F is the thermostat temperature, I wouldn't expect the distributor to be any less with a fully warmed up engine. However, I suspect the base of the distributor (where the ICM is mounted) is a whole lot hotter.
[This message has been edited by Patrick (edited 01-28-2020).]
Considering that 195°F is the thermostat temperature, I wouldn't expect the distributor to be any less with a fully warmed up engine. However, I suspect the base of the distributor (where the ICM is mounted) is a whole lot hotter.
I will put some heat shielding in tomorrow, plus my new icm,and let you know my results. Thanks
Any '85-'87 Fiero with a V6 came with a trunk blower. It draws cool air from the passenger side rear wheel well area and blows through two aluminum tubes at the alternator and coil/distributor. It turns on whenever the rad fan comes on.
Has headers? Likely other changes you don't know or mention....
Like often is missing Heat Shield(s) protect the dist etc. If gone then exhaust heat things a lot more then should and even w/ engine blower on will still heat more. That thin metal block IR from Exhaust lighting up everything behind it.
Engine electronics part like ICM often takes more heat then most other normal things but when you read 190°F the Part sees much higher In It and will stop working until cools or never again.
Most car electronics are Not like current PC CPU/GPU that slows down for high heat before will crash.
Replacing ICM and rest of the dist electrics likely will have same problem w/o proper heat shields even w/ best heat grease, blower rewired on full time, etc. Note that Engine Blower, Rad Fan, and even the Heater Blower isn't made to run all the time. More so at full speed. Heater blower only last better because when on full time is often at low speeds.
Heat grease for ICM is good but matters what type used. "Liquid metal" and a few others eat Aluminum parts easy and often not just where you applied them. In Fiero V6 can eat the Dist and entire Intake is Aluminum.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Has headers? Likely other changes you don't know or mention....
Like often is missing Heat Shield(s) protect the dist etc. If gone then exhaust heat things a lot more then should and even w/ engine blower on will still heat more. That thin metal block IR from Exhaust lighting up everything behind it.
Engine electronics part like ICM often takes more heat then most other normal things but when you read 190°F the Part sees much higher In It and will stop working until cools or never again.
Most car electronics are Not like current PC CPU/GPU that slows down for high heat before will crash.
Replacing ICM and rest of the dist electrics likely will have same problem w/o proper heat shields even w/ best heat grease, blower rewired on full time, etc. Note that Engine Blower, Rad Fan, and even the Heater Blower isn't made to run all the time. More so at full speed. Heater blower only last better because when on full time is often at low speeds.
Heat grease for ICM is good but matters what type used. "Liquid metal" and a few others eat Aluminum parts easy and often not just where you applied them. In Fiero V6 can eat the Dist and entire Intake is Aluminum.
Wow. Gettin new wrinkles in my brain tonight!!! Lol. I thought that the headers/no shielding could be the culprit. No fan in motor compartment as far as i can tell. But,as soon as daylight hits tomorrow I'll be under the motor compartment and see what's up. Y'all are excellent help. Thanks
That's no surprise... as it's referred to as a trunk blower for good reason.
quote
Originally posted by Patrick:
Any '85-'87 Fiero with a V6 came with a trunk blower. It draws cool air from the passenger side rear wheel well area and blows through two aluminum tubes at the alternator and coil/distributor. It turns on whenever the rad fan comes on.
[This message has been edited by Patrick (edited 01-28-2020).]
85-86-87 Trunk/Engine blower is often deleted by fools think they know better then GM. Should be under right side trunk carpet w/ 2 outlet tubes on engine bay for dist and alt.
GM spent money on X part(s) for a very good reason otherwise GM Bean counters would crap all over this. Yes, 88 Fiero V6 didn't have it but GM also change other parts too like new CS130 alt w/ 2 fans, One you see, One internal, and is better then SI in many ways.
Even if there... Runs only w/ Rad Fan On unless someone rewired it and/or rad fan circuit. If Coolant system works right and weather is cool/cold then rad fan often won't turn on w/ car parked/stop w/ engine at idle for a few minutes.
If you had engine vents block w/ snow or no wind might heat up faster. Anything making air move can slow down convention heating but doesn't really affect Exhaust IR flooding things w/ missing shields. See https://www.fiero.nl/forum/Forum2/HTML/141784.html
Related Example: Starter and solenoid often don't have them from factory but many last longer w/ one. More so w/ Fiero get Exhaust IR from top and the cat. Even when car is off... Cat and engine takes time to cool and heats the starter etc until then. Many stop a store for a few minutes then won't start because of this. shield block a lot of IR so won't heat up so much.
(Edit to correct blower years.)
[This message has been edited by theogre (edited 01-29-2020).]
86-87 Trunk/Engine blower is often deleted by fools think they know better then GM. Should be under right side trunk carpet w/ 2 outlet tubes on engine bay for dist and alt.
GM spent money on X part(s) for a very good reason otherwise GM Bean counters would crap all over this. Yes, 88 Fiero V6 didn't have it but GM also change other parts too like new CS130 alt w/ 2 fans, One you see, One internal, and is better then SI in many ways.
Even if there... Runs only w/ Rad Fan On unless someone rewired it and/or rad fan circuit. If Coolant system works right and weather is cool/cold then rad fan often won't turn on w/ car parked/stop w/ engine at idle for a few minutes.
If you had engine vents block w/ snow or no wind might heat up faster. Anything making air move can slow down convention heating but doesn't really affect Exhaust IR flooding things w/ missing shields. See https://www.fiero.nl/forum/Forum2/HTML/141784.html
Related Example: Starter and solenoid often don't have them from factory but many last longer w/ one. More so w/ Fiero get Exhaust IR from top and the cat. Even when car is off... Cat and engine takes time to cool and heats the starter etc until then. Many stop a store for a few minutes then won't start because of this. shield block a lot of IR so won't heat up so much.
Ok. I've opened the lid to the engine compartment, and,i see a 1"tube connected to the "trailing edge",of the motor compartment, coming out of the "leading edge "of the storage area, located on the right side,and it makes a "u-turn"and appears to be pointed at the alternator.. But!!!. Nothing going to my distributor. I can see what appears to be hangers on the rear wall. Can anyone send me a picture of what I'm needing? TIA
