Honda Prelude Forum

Honda Prelude Forum (http://www.preludezone.com/)
-   General Tech Talk (http://www.preludezone.com/general-tech-talk/)
-   -   Need prelude help! (http://www.preludezone.com/general-tech-talk/60398-need-prelude-help.html)

Ateroattos 12-07-2016 12:44 PM

Need prelude help!
 
I just bought a 98 prelude type sh, I went to go change the O2 sensor and it was rough taking it out, I got the one on the catalytic converter out but it messed up the threading on that hole. The O2 was so messed up once out and I can't put a new one in, what should I do. The car also when turned on starts revving on its own and I don't know why, I think it's because the catalytic converter doesn't have an that O2 sensor know but I'm not sure. Can anyone help.

TypeT 12-07-2016 01:31 PM

Re: Need prelude help!
 
there are tools to make new threads or then weld new nut for it there ....or change whole cat

is that revving new symptom?

Ateroattos 12-07-2016 02:33 PM

Re: Need prelude help!
 
Quote:

Originally Posted by TypeT (Post 801872)
there are tools to make new threads or then weld new nut for it there ....or change whole cat

is that revving new symptom?


Thanks for responding, I'll look into the threading tool, and the revving started after I couldn't put a new O2 sensor.

TypeT 12-08-2016 04:12 AM

Re: Need prelude help!
 
could be because of that.

can you plug the hole with anything?

now its not really wise to drive - your a/f rations are messed up without that sensor

Ateroattos 12-08-2016 01:13 PM

Re: Need prelude help!
 
I could find something to plug it, and I'm trying to drive a lot less at the moment because of it

Ateroattos 12-08-2016 07:33 PM

Re: Need prelude help!
 
Ok so I took it to a muffler shop and they fixed the catalytic converter problem so the engine code for that went off, but it is still auto revving, the guy said the code it has is the map sensor it's like p108. Would that be the only problem or could it also be something else?.

TypeT 12-09-2016 02:07 AM

Re: Need prelude help!
 
could be also air leak

Ateroattos 12-17-2016 11:54 PM

Re: Need prelude help!
 
It might be an air leak but I cleaned the iacv and it is still idle surging, but when I disconnect the iacv the surging atops, does that mean I need a new iacv?

TypeT 12-18-2016 05:41 AM

Re: Need prelude help!
 
did you bleed the coolant?

Ateroattos 12-18-2016 02:03 PM

Re: Need prelude help!
 
No I haven't yet should I?

TypeT 12-19-2016 01:38 AM

Re: Need prelude help!
 
of course

Ateroattos 12-22-2016 05:04 PM

Re: Need prelude help!
 
I also should mention that after I drive a while the idle surge stops and it starts to rough idle, and when it does it feels like when I put in glass it doesn't want to flow through till I floor it. I cleaned the idle air control valve and I saw that the gasket was kinda bad, could that be the reason?

And I will bleed and replace the coolant today

Ateroattos 01-23-2017 09:52 PM

Re: Need prelude help!
 
OK so I changed the map sensor, the idle air control valve, the map sensor, and cleaned the egr valve, I can't seem to get this idle surge to leave.

TypeT 01-24-2017 01:35 AM

Re: Need prelude help!
 
quick check list

Quote:

Originally Posted by TypeT (Post 696165)

usually these things fix bad idle or/and hesitations:

- new spark plugs & wires
- new distributor cap & rotor
- new air/fuel filters
- clean injectors/iacv/egr/fitv
- bleed the coolant
- new pcv
- adjust valves and ignition
- adjust idle from tb's screw and throttle cable
- check does sensors work properly: map, iat and tps (and try calibrating tps)
- then check wires, connectors and hoses

check o2 sensors and vacuum/exhaust leaks (check all the seals - IM/header/TB gaskets, injector seals, maybe even buy valve cover gasket set...)
check timing. after that: double check timing

clogged cat might you give some trouble as well (usually when driving) - check cats condition

those are basic maintenance as well.


Ateroattos 03-10-2017 02:08 PM

Re: Need prelude help!
 
What it ended up being was everything internally was carbed up and clogged, I took it to a mechanic and they took the engine apart.and cleaned everything out,

New problem is now it's idles really low and I have no idea what it is

TypeT 03-11-2017 02:31 AM

Re: Need prelude help!
 
pay more attention ^

Quote:

Originally Posted by TypeT (Post 696165)
- adjust idle from tb's screw and throttle cable


Ateroattos 03-28-2017 12:00 PM

Re: Need prelude help!
 
Everything works fine now I fiddled with the idle air adjustment screw so it's fine now, thank you for the help.


All times are GMT -4. The time now is 05:37 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96