Rich AFRs
05-29-2018, 07:32 AM
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Rich AFRs
Hey guys, my Crx randomly started running very rich. One day it was running fine, and the next morning it was running 10AFRs regardless if I'm cruising or boosting. I tried swapping my Hondata into another ecu already, but not loading my tune into another hondata motherboard. Fuel pressure is good. I haven't swapped wideband sensors yet, but it definitely smells rich. We've measured temps on each exhaust tube and they are all fairly uniform, so it doesn't appear to be injectors. Any other suggestions or ideas?
My set up is a 90 Crx with turbo LS Vtec. Ecu is Hondata s300 v3. Injectors are ID 1000s
thanks!! I would love to get her back on the road.
My set up is a 90 Crx with turbo LS Vtec. Ecu is Hondata s300 v3. Injectors are ID 1000s
thanks!! I would love to get her back on the road.
05-29-2018, 10:17 AM
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Re: Rich AFRs
That's awesome! What town do you live in?
I need to check which one. I believe I have an Omni 3 bar. I have had one go out on me before. So definitely worth checking
I need to check which one. I believe I have an Omni 3 bar. I have had one go out on me before. So definitely worth checking
05-29-2018, 10:52 AM
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Re: Rich AFRs
I live in Medford. Are you sure it’s a real Omni map sensor. I tuned a car recently that had a fake Omni map sensor and it was bad, we had to just run a stock map sensor instead. The fake one had a smaller Omni logo vs the real one.
05-29-2018, 11:21 AM
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Re: Rich AFRs
Ok awesome! Do you ever go to the car meets or races down there? I definitely plan on going to the autox and hopefully drag strip once it's running again.
It ought to be real, I don't recall which website I ordered it from. I'll take a look at that logo next time I have a chance.
It ought to be real, I don't recall which website I ordered it from. I'll take a look at that logo next time I have a chance.
05-29-2018, 11:46 AM
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Re: Rich AFRs
Yeah I run at the drag strip some, don’t really go to many meets tho.
The fake omni map sensor was reading 10” or vacuum at idle when the boost/vac gauge read 21”. I knew something was wrong when I had to pull 70% fuel to get it to start haha.
The fake omni map sensor was reading 10” or vacuum at idle when the boost/vac gauge read 21”. I knew something was wrong when I had to pull 70% fuel to get it to start haha.
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05-29-2018, 12:36 PM
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Re: Rich AFRs
Ok I got ya! Well maybe I'll see you around. What is your car like? I'll need to keep an eye out.
Yes that's exactly what my old one did when it went bad. I checked it since this issue arose and it's spot on with my boost gauge.
Yes that's exactly what my old one did when it went bad. I checked it since this issue arose and it's spot on with my boost gauge.
05-29-2018, 12:40 PM
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Re: Rich AFRs
https://honda-tech.com/forums/forced...-time-3319179/
So you just checked and you map sensor is reading correctly?
05-29-2018, 03:00 PM
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Re: Rich AFRs
Wow, very nice looking build!! I really like your backdoor Intercooler set up. That turned out great.
what times have you ran so far?
No I haven't checked it recently. I just checked it after it started having the issue and it looked normal then. But it's been sitting for a couple months while I was out of town.
I won't be able to check it again for a few days. Its at a friend's shop now.
what times have you ran so far?
No I haven't checked it recently. I just checked it after it started having the issue and it looked normal then. But it's been sitting for a couple months while I was out of town.
I won't be able to check it again for a few days. Its at a friend's shop now.
05-29-2018, 03:18 PM
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Re: Rich AFRs
Wow, very nice looking build!! I really like your backdoor Intercooler set up. That turned out great.
what times have you ran so far?
No I haven't checked it recently. I just checked it after it started having the issue and it looked normal then. But it's been sitting for a couple months while I was out of town.
I won't be able to check it again for a few days. Its at a friend's shop now.
what times have you ran so far?
No I haven't checked it recently. I just checked it after it started having the issue and it looked normal then. But it's been sitting for a couple months while I was out of town.
I won't be able to check it again for a few days. Its at a friend's shop now.
Ok well something had to of changed. How long was it sitting? Could be an injector or 2 sticking open, do the plugs look to be burning the same? Who tuned the car originally?
05-29-2018, 04:30 PM
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Re: Rich AFRs
You're welcome! Dang you were so close to breaking 10s!! I bet you will no problem now. How do you like e85 so far? Is that 50hp at the same boost level? And is that flex fuel or strictly e85 tune? I've been debating going flex fuel.
I don't know what could have changed. I was in Roseburg and it had not had any issues. Then I went to visit a friend in grants pass and the next morning it would only run 10AFRs.
Joe at Treal performance tuned last December if I recall.
I don't know what could have changed. I was in Roseburg and it had not had any issues. Then I went to visit a friend in grants pass and the next morning it would only run 10AFRs.
Joe at Treal performance tuned last December if I recall.
05-29-2018, 04:40 PM
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Re: Rich AFRs
And we tested the heat on each exhaust runner. If an injector was sticking it should be way lower temps. So not completely ruled out, but I don't think the injectors are the issue.
05-29-2018, 04:46 PM
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Re: Rich AFRs
You're welcome! Dang you were so close to breaking 10s!! I bet you will no problem now. How do you like e85 so far? Is that 50hp at the same boost level? And is that flex fuel or strictly e85 tune? I've been debating going flex fuel.
I don't know what could have changed. I was in Roseburg and it had not had any issues. Then I went to visit a friend in grants pass and the next morning it would only run 10AFRs.
Joe at Treal performance tuned last December if I recall.
I don't know what could have changed. I was in Roseburg and it had not had any issues. Then I went to visit a friend in grants pass and the next morning it would only run 10AFRs.
Joe at Treal performance tuned last December if I recall.
That is strange man. Maybe your tune got corrupted or something idk. Maybe try to upload your tune again. That’s good it was tuned by a legit tuner tho. Really weird man, without logging it myself and seeing all the sensor readings I’m not sure at the moment haha.
05-29-2018, 05:15 PM
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Re: Rich AFRs
Wow that's such a big increase! I've heard nothing but good things about e85. How much power are you making now with e85?
i believe all I need is to check my fuel pump or get a new e85 compatible pump and then get a flex fuel sensor.
I have tried reflashing my tune again and my old tune for the heck of it. Nothing makes a difference. I'm going to meet up with Langford on Thursday, if you know him. He's going to go over the tune and see if he has any luck adjusting it. I'm just trying to get some other ideas gathered before then. He doesn't have much time to spare lol
i believe all I need is to check my fuel pump or get a new e85 compatible pump and then get a flex fuel sensor.
I have tried reflashing my tune again and my old tune for the heck of it. Nothing makes a difference. I'm going to meet up with Langford on Thursday, if you know him. He's going to go over the tune and see if he has any luck adjusting it. I'm just trying to get some other ideas gathered before then. He doesn't have much time to spare lol
05-29-2018, 08:14 PM
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Re: Rich AFRs
Wow that's such a big increase! I've heard nothing but good things about e85. How much power are you making now with e85?
i believe all I need is to check my fuel pump or get a new e85 compatible pump and then get a flex fuel sensor.
I have tried reflashing my tune again and my old tune for the heck of it. Nothing makes a difference. I'm going to meet up with Langford on Thursday, if you know him. He's going to go over the tune and see if he has any luck adjusting it. I'm just trying to get some other ideas gathered before then. He doesn't have much time to spare lol
i believe all I need is to check my fuel pump or get a new e85 compatible pump and then get a flex fuel sensor.
I have tried reflashing my tune again and my old tune for the heck of it. Nothing makes a difference. I'm going to meet up with Langford on Thursday, if you know him. He's going to go over the tune and see if he has any luck adjusting it. I'm just trying to get some other ideas gathered before then. He doesn't have much time to spare lol
I’m not familiar with Langford. Is he a local tuner? Hopefully he can help you out. Im curious to know what you find out man.
05-30-2018, 12:29 PM
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Re: Rich AFRs
That is awesome! You're definitely putting down some good power. How much does your car weigh? I'm hoping to hit 400 down the road once I get bigger cams/intake/exhaust turbine housing.
Yep he owns a shop and does tuning. He's pretty dang good! Just busy. I'll let you know if I figure it out.
Yep he owns a shop and does tuning. He's pretty dang good! Just busy. I'll let you know if I figure it out.
05-30-2018, 12:49 PM
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Re: Rich AFRs
That is awesome! You're definitely putting down some good power. How much does your car weigh? I'm hoping to hit 400 down the road once I get bigger cams/intake/exhaust turbine housing.
Yep he owns a shop and does tuning. He's pretty dang good! Just busy. I'll let you know if I figure it out.
Yep he owns a shop and does tuning. He's pretty dang good! Just busy. I'll let you know if I figure it out.
06-02-2018, 01:23 PM
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Re: Rich AFRs
I finally found the problem. One of the wideband wires down near the exhaust had somehow gotten severed. Runs well now!
And it sounds like before too long he should be getting his friends Dynapack dyno
And it sounds like before too long he should be getting his friends Dynapack dyno
06-02-2018, 05:26 PM
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Re: Rich AFRs
That would be awesome if he gets a dyno. I’ll definitely make the trip up there when he does.
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