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Author Topic: My Misc Fiero issues  (Read 125445 times)

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Fierofool

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Re: Misc Fiero issues
« Reply #300 on: May 15, 2019, 09:54:39 pm »
Yeah, what I meant is that you don't want to install a new cam with old lifters.  You want cam and lifters to wear and lap in together. 
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There are three kinds of men:

1.    The ones that learn by reading.
2.    The few who learn by observation.
3.    The rest of them have to pee on the electric fence and find out for themselves.    Will Rogers

GTRS Fiero

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Re: Misc Fiero issues
« Reply #301 on: May 15, 2019, 10:06:30 pm »
It will also get another new timing chain.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #302 on: May 25, 2019, 07:04:01 pm »
Went for a drive.  Of course, no AC.  Then the HVAC fan acted up.  It seems that's what's been making the water rushing sound.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #303 on: May 26, 2019, 01:04:13 pm »
As if no AC wasn't bad enough, today has not been my day.

Someone broke into my truck last night, and stole my Mentos.

Today, my Fiero will not idle, so I have to keep 1 foot on the gas.  Rather inconvenient.  While driving through the road destruction, the idle drops, so the engine dies.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #304 on: May 28, 2019, 10:10:48 pm »
Well, apparently the EGR leak caused the dying issue.  Ixm changine the EGR mount block to try to stop going through gaskets every 150 or so miles.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #305 on: June 08, 2019, 09:10:58 pm »
The large temp swings were caused by air in the coolant system.  So, progress.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #306 on: June 20, 2019, 09:22:26 pm »
I am debating going back to a distributor to solve some runability issues.  My hesitation is that there did not seem to be a problem for others in the club with a 7730 and DIS.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #307 on: June 27, 2019, 05:36:40 pm »
Well, my MAP sensor is whacko.  The voltage is all over the place, so the ECU is making the engine run pig rich.  Replaced the MAP sensor, no change.  Checking the wiring harness.
« Last Edit: July 01, 2019, 05:50:10 pm by GTRS Fiero »
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #308 on: June 27, 2019, 06:30:23 pm »
LOL!  My MAP sensor voltage is all over the map.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #309 on: July 01, 2019, 05:49:44 pm »
Well, tried 6 spare MAP sensors.  No change.  Lost more hair.  Put my MAP sensor on another Fiero.  That Fiero would not start.  Swapped MAP sensors back, other Fiero ran great.  Tried 7th MAP sensor on my Fiero.  My Fiero ran much better, but there are still idle issues.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #310 on: July 01, 2019, 06:56:52 pm »
Well, the idle issues were caused by the IAC, which was bad...again.  Rrgh!

Now on to the oil loss issues.
« Last Edit: July 02, 2019, 06:18:56 pm by GTRS Fiero »
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #311 on: July 02, 2019, 07:48:42 pm »
Apparently, oil in a running engine is under pressure.  The suspicion was that the distributor O-ring was leaking.  Maybe a quart every few hundred miles or so.  The thing is, there was no evidence of a leak, other than a puddle and missing oil.  So, the engine was running, and observation was in progress, when a geyser of oil suddenly erupted.  The O-ring is toast.  I guess it is safe to say that the leak is coming from the O-ring.
« Last Edit: July 06, 2019, 09:42:52 am by GTRS Fiero »
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #312 on: July 06, 2019, 09:42:24 am »
The Fiero is back together, but there may be an issue with the cat.  Hoping that a drive of several hours will clear this up, on the theory that the cat will get hot and burn out whatever is bothering it.
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #313 on: July 08, 2019, 08:37:16 pm »
Still tracing oil issues.  The next thing to check is the valve seals.  Will probably replace the seals, then the oil pressure sender.

The compression in each cylinder is between 175 & 180 PSI, so the rings appear to be tight.  3 PSI variance between cylinders would seem to be acceptable on a street car.

Replacing the plugs again.

Going to add a paper gasket to the "distributor".
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GTRS Fiero

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Re: Misc Fiero issues
« Reply #314 on: July 14, 2019, 09:13:42 pm »
Where my coolant tubes pass under the front crossmember, the tubes do not fit properly into the retainer.  There are rubber pieces on the tubes.  The retainer and clamps have been removed, but the dang tubes aren't cooperating.

My new AC dryer fell apart, meaning that the weld between the top and bottom came apart.  Annoying.  At least it wasn't installed yet.
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