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Replaced blown intercooler pipe, runs terribly NO BOOST LEAKS


yubh8tn
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1384/2000


Galant VR-4 org Post #: 1250747 posted 05/13/21 03:23 AM     Remind Me!  Send Private Message   Edit Post      
I know what you're thinking. I have a boost leak, you're gonna say. BUT I DONT. I tested and it's holding 20psi just fine. The problem is very weird because it is running rough on idle, runs fine at cruising speed, but bogs like i blew an intake pipe when I floor it and the turbo is spooling 1-2k rpms later than it did with the factory hose.

I replaced the pipe with a homemade radiator hose setup and it ran just fine except it took forever to spool, so I tested for leaks, it had one, and changed how I had it connected to the intercooler. Now its running terribly but holds boost. The check engine light comes on during pulls and there's a loud ticking sound that scales with RPMS near/around the intake manifold.

I know you guys can't do much without being with the car and seeing what I did, but any guesses would be appreciated. Thank you



Belize Green 1384/2000
1998 Integra


Edited by yubh8tn (05/13/21 03:25 AM)

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mooserage Galant VR4.org Administrator
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Galant VR-4 org Post #: 1250752 posted 05/13/21 04:17 PM     Remind Me!  Send Private Message   Edit Post      
By RPMS, do you mean the CAS?

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yubh8tn
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Galant VR-4 org Post #: 1250758 posted 05/13/21 09:14 PM     Remind Me!  Send Private Message   Edit Post      
By scales with RPMs I meant the ticking gets faster when I rev the car. Could the CAS cause that?



Belize Green 1384/2000
1998 Integra


Edited by yubh8tn (05/13/21 09:14 PM)

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CutlassJim
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Galant VR-4 org Post #: 1250760 posted 05/14/21 07:45 AM     Remind Me!  Send Private Message   Edit Post      
Did you leave a rag in one of the pipes?

Ticking sound could be the PCV valve clacking away. I used to get that at idle sometimes until I deleted it.



ALL DSM's are advanced and ALL Evo's retarded
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Edited by CutlassJim (05/14/21 07:47 AM)

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gvr4ever
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Galant VR-4 org Post #: 1250764 posted 05/14/21 01:26 PM     Remind Me!  Send Private Message   Edit Post      
Also sounds like horrible lifter tick. Double check oil level.

At your own risk. Unplug the knock sensor with SAFE boost, and see if it runs better.



1992 Nile black w/sunroof
15xK miles. 2nd owner since 1998

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yubh8tn
Member
1384/2000


Galant VR-4 org Post #: 1250768 posted 05/14/21 10:09 PM     Remind Me!  Send Private Message   Edit Post      
No rag!! lol. The knock sensor is brand new OEM but its from a 1.8L Galant, according to a few various sites they're the same though. On top of that I got it tuned with that knock sensor installed and there wasn't a problem until I messed with my intercooler pipe.

Oil level is fine but I could add a bit more, PCV valve is brand new but I guess it could be that.

I guess I didn't make myself clear, the ticking sound and CEL are new. They didn't start until I changed the intercooler pipe. I'm going to revert the pipe to the busted one that I taped together and see if it runs correctly again. If it does then I know the bogging and weird idle were due to how I connected the hosing. Hopefully the ticking and CEL go away with that fix....



Belize Green 1384/2000
1998 Integra


Edited by yubh8tn (05/14/21 10:12 PM)

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gvr4ever
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Galant VR-4 org Post #: 1250772 posted 05/15/21 06:35 AM     Remind Me!  Send Private Message   Edit Post      
Lifter tick can trip the knock sensor and enough knock can trip a CEL. Not saying that's what it is, but it could be a new symptom that is unrelated to your changes. Going back to how it was before you had a problem is a good choice, but I don't see how a IC and intake noise could be related. Hopefully something wasn't in the pipe that got sucked into the intake. Maybe do a compression check.



1992 Nile black w/sunroof
15xK miles. 2nd owner since 1998

Posts: 6017 | From: central Indiana | Member Since: 08/06/02 | IP: (184.170.166.66) | Report this post to a Moderator

yubh8tn
Member
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Galant VR-4 org Post #: 1250782 posted 05/16/21 01:34 AM     Remind Me!  Send Private Message   Edit Post   
I agree. We shall see! I'll post updates so if anyone has a similar issue they'll have some info.

Compression check is a good idea too.



Belize Green 1384/2000
1998 Integra

Posts: 135 | From: coeur d alene, idaho | Member Since: 08/21/19 | IP: (98.146.240.111) | Report this post to a Moderator


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