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Map 2 check please, been running 2 years and now have issues

R

Reldas

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As the title states i have had the JB4 installed on MAP 2 for about 2 years now and have had zero issues. Now i am often getting CEL on hard acceleration and even sometimes complete shut down (all dash lights come on and engine struggles). I have been turning the car off for a while and then back on and everything has been fine but i would like the issue resolved.

Today i got a CEL while hard accelerating and i got a safety 2 shutdown in JB4 (AFR lean) which has never happened before. I am thinking it might be sparkplugs dying?? i got them from burger and gapped them myself but after 2 years maybe they are dying idk.

If someone could help out that would be great.
 

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Sounds like plugs. I see most people change the HKS at 10K-15K miles... Denso's seem to go even faster.
 
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Reldas said:
ill hold off until i heard from someone that can read logs, dont want to replace them if i dont have to or its not needed.
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Likely old plugs. Your timing in #3 is starting to pull to much on higher boost. Also your afr2 is going way out of wack on higher boost this is likely causing the shutdown. Pull a couple of the easy plugs and take a look.
 
cncBilly said:
Likely old plugs. Your timing in #3 is starting to pull to much on higher boost. Also your afr2 is going way out of wack on higher boost this is likely causing the shutdown. Pull a couple of the easy plugs and take a look.
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Terry from burger thinks is might be a failed o2 sensor, so i might check those out as well.
 
Last edited:
Reldas said:
Terry from burger thinks is might be a failed o2 sensor, so i might check those out as well.
Click to expand...
Mr. T is the expert. I would go down the path he suggests first. Keep us posted pls. Cheers.
 
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