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Author Topic: Makeshift EGR tube repair  (Read 14997 times)

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TopNotch

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Makeshift EGR tube repair
« on: October 18, 2019, 10:53:53 am »
For some time, my Formula has been idling a bit fast, and giving an occasional SES light, and the code is idle air control. Turns out my EGR tube is cracked. I have a new Fiero Store braided EGR tube on order, but for now, I did a makeshift repair. I wrapped it with aluminum HVAC tape, and put a hose clamp around the tape. It's idling fine now.

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Fierofool

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Re: Makeshift EGR tube repair
« Reply #1 on: October 18, 2019, 11:08:42 am »
Good fix.  I would have expected air to still be pulled in around the spirals of the tube.  If that should happen, probably some JB Weld smeared around the area to fill the depressions in the spirals then apply the HVAC tape would fix it. 
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TopNotch

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Re: Makeshift EGR tube repair
« Reply #2 on: October 18, 2019, 11:44:00 am »
The EGR tube is actually corrugated, not spiral. The ridges are parallel, and in this case, the crack is at the top of a ridge. So the tape and hose clamp seem to be sealing it OK for now.
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Fierofool

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Re: Makeshift EGR tube repair
« Reply #3 on: October 18, 2019, 03:47:56 pm »
I always thought it was spiral.  I have a Rodney 85-87 and an 88 on the shelf and plan to replace mine when I install my stainless vacuum lines.  That will happen whenever I upgrade my injectors. 
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GTRS Fiero

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Re: Makeshift EGR tube repair
« Reply #4 on: October 18, 2019, 06:21:03 pm »
I have Rodney's braided tube.  My original was fine, but I replaced the tube, anyway.
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TopNotch

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Re: Makeshift EGR tube repair
« Reply #5 on: November 07, 2019, 10:18:57 am »
I finally got my ordered new EGR tube last Saturday, and put it in. The old one was still leaking some after the makeshift fix. It turned out that the gasket between the tube and the EGR was also bad. The car idles much better now, and also seems to run better and is getting better gas mileage.
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GTRS Fiero

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Re: Makeshift EGR tube repair
« Reply #6 on: November 07, 2019, 05:58:12 pm »
How do you like the TFS EGR tube?
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TopNotch

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Re: Makeshift EGR tube repair
« Reply #7 on: November 07, 2019, 06:00:50 pm »
Quote from: GTRS Fiero on November 07, 2019, 05:58:12 pm
How do you like the TFS EGR tube?
I like it. I had put one on the '86 SE I used to have and ran it until I sold it to my brother. No problems.
My other brother has the car now, and  has re-engined it, so I don't know if he still has the tube.
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GTRS Fiero

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Re: Makeshift EGR tube repair
« Reply #8 on: November 07, 2019, 06:04:30 pm »
I like the look, and the quality.  I should enclose mine in a heat sheath, but haven't.  I'm running Rodney's, which is similar, but not quite as nice.  No one else (that I've seen) has Rodney's.
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TopNotch

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Re: Makeshift EGR tube repair
« Reply #9 on: November 08, 2019, 10:03:10 pm »
Quote from: GTRS Fiero on November 07, 2019, 06:04:30 pm
I should enclose mine in a heat sheath, but haven't.
I wrapped mine with heat wrap, held in place with zip ties.

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GTRS Fiero

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Re: Makeshift EGR tube repair
« Reply #10 on: November 08, 2019, 10:09:24 pm »
Do the zip ties hold up to the heat?
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GTRS Fiero

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Re: Makeshift EGR tube repair
« Reply #11 on: November 09, 2019, 10:15:02 am »
What would happen, if the stock EGR tubing was replaced with a piece of tubing that is used for flexible gas tubing, such as to a dryer?  The tubing looks very similar.
« Last Edit: November 09, 2019, 10:41:29 am by GTRS Fiero »
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TopNotch

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Re: Makeshift EGR tube repair
« Reply #12 on: November 09, 2019, 10:37:29 am »
Quote from: GTRS Fiero on November 09, 2019, 10:15:02 am
What would happen, if the stock EGR tubing was replaced with a piece of tubing that is used for flexible gas tubing, such as to a dryer.  The tubing looks very similar.
Someone on Ebay used to sell a kit for that. It came with a short length of gas tubing and all the hardware needed to make an EGR tube from it. That kind of tubing has thinner walls than stock EGR tubing, so I don't suppose it would last very long. But you could go to the hardware store and get more if it broke.
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GTRS Fiero

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Re: Makeshift EGR tube repair
« Reply #13 on: November 09, 2019, 10:41:14 am »
I'm also fairly certain that it wasn't meant to take as much heat.

As I think about this, if it were thinner, it should not have as much mass, and should not get as hot.
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scottb

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Re: Makeshift EGR tube repair
« Reply #14 on: November 09, 2019, 10:55:31 am »
If made from the same material, each will get just as hot but the thinner one will transfer the heat faster
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