High idle, high exhaust temp (Page 2/2)
Patrick FEB 21, 08:59 PM

quote
Originally posted by 84-barn_fresh:

I am just assuming the old guy that I bought it from did not mess with the timing...



Why would you assume that? Assume nothing when working on a car.


quote
Originally posted by 84-barn_fresh:

Can I check it without shorting the ALDL terminals?



No.
84-barn_fresh FEB 21, 08:59 PM
ogre I had a whole new fel pro gasket set. I did reuse the head bolts they felt a lot better than the first rocker arm bolt I tried taking to 75 ft lbs. Yeah I really suck, broke it off, then looked at the necked down portion and decided it should not have been my fault. I got the broken one out clean got a brand new oem bolt, and torqued that one and the rest only to like 55-60 beause I was nervous as hell. Probably should have replaced all of those too. Anyways valve train and everything sounds good. I think the oil was diluted from all the work I had been doing and thats why it knocked a bit. I changed it and did not hear anything when I ran it briefly after.

but it revs clean above 1500 seems like when the advance maybe kicks in, then sometimes idle will stay elevated around 2, sometimes idles clean above 1, and then cycles to a real low lumpy sub 1k and stumbles, had cut off twice, and had a few small backfires. but the exhaust is just screaming hot for no reason. I have just been letting it idle and give it little burps when it gets rough below 1k running it for maybe a minute or less. So my point is that it's running the same as before I took it apart. I really should check compression again. Have to go get a tester again. Need to return their vacuum gauge anways. ahhhh Fiero why do you do this too me l=

Thanks for keeping me sane both of you. I have been working my ass off on this car and it's not giving me any love.

to the other questions, yes I know I should not assume anything. I should know better by now, been working on cars for 35 years, and bought and sold over 40 cars all running better when I sold them. Life is complicating things and making it really difficult to stay focused, I should be better at diagnosing and repairing the right stuff the first time. But I seem to be getting worse which is depressing. Wanted this to be a fun quick project for my kid who paid for it. It was a mistake, he has no idea how much time and how many parts I have replaced. Fuel pump, all new brakes was first then everything above, new alternator, have doubts about the ac comp and water pump, and I still have to replace a clutch line, a brake line, a caliper, rad fan, and hvac blower, and a hole in the coolant pipe.

[This message has been edited by 84-barn_fresh (edited 02-21-2023).]

Dukesterpro FEB 22, 09:36 AM
Welcome to Fiero ownership.

For me both my 84 and my 88 always get worse before they get better, I am currently chasing seeming ignition misfires on a 84 Fiero with every ignition component replaced Take a breath and just go one step at a time, keep bouncing ideas off the forum and keep it updated. Also make sure you inform us of all the issues with your car as I have learned some stuff can be more interconnected then you may realize. You might not hit your deadline, but the spunky little car will be worth it when its done.

A big concern I noticed it that you have a hole in your coolant line. If it big enough to leak when cold, its big enough to depressurize you coolant system hot, allowing the coolant to boil to early. Once the coolant starts boiling you engine is going to spike in temperature. Might be the source of your overheating problem. Fiero's are ridiculously sensitive to maladies in the coolant system. I learned the hard way myself. Also, what bleeding procedure did you use? You need to bleed them and bleed them and bleed them to make sure as much air as possible is out of the system.

I park the car on level ground. Fill. Close cap. Start engine and run for 15 seconds. Stop. Open Cap. Fill. Close Cap. Start engine and run for 15 seconds. etc. Usually takes about 5-10 minutes of the procedure before the car hold temperature.


Spoon MAR 02, 05:39 PM
Did you short terminal A & B on the ALDL connector and read the codes? A paper clip bent at the right angle works well for this.

ps: Don't use any of the pretty colored ones because they are insulated.

Spoon

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"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut