Morris

My S needs some service, missing badly, just wondered what to expect. I would guess it needs plugs, but on another fuel injected car I had, when it acted the same the injectors needed to be cleaned or replaced. Is that a common problem with the S? (any FI auto)
BTW I have about 45K miles. Other thoughts? Thanks.

CKit

Are you stock?

MAP whack?
Fuel injector cleaning helped me.
Changing plugs is super easy, only takes 15 minutes. Some of us FI guys change them every 3-5k miles for fun.

Morris

Yes bone stock.
What is MAP whack?
Did you clean the injectors yourself, or have it done? Any special tools needed? How long did it take?
Thanks.

thecbrman

does it miss only above 6k rpm? if it does, then u need to do the MAP whack. you'll see the map sensor right there by the throttle body. Use the back of a screw driver and gentle "whack" it. It should fix the problem. If it does in fact fix the problem, put a zip tie around it. There is a TSB for that particular problem. I had the same problem before, only above 6k rpm, did the map whack and fixed it. You should do a search on s2ki.

chris2k03

check your oil. ap1's are known to burn a lot of oil, 1 quart/1,000miles in some cases. my vtec was breaking up in high rpm because i was low on oil. if thats the case consider buying "krank vents" to correct the oil burning.

Elistan

, but re-seat the connector as well. In my experience that was more effective than tapping on the sensor.

mxt_77

^ Yep. The problem is with the connectors, not some internal sensor problem, so I think the best solution is to simply unplug the sensor and plug it back in securely.

To the OP, I think there's some info in the UTH FAQ about this, as well as info on a TSB. If you have a good relationship with your local service advisor, you might be able to get them to replace the MAP sensor with the upgraded part. Or you could 'rig' the device with a zip-tie (which is effectively all the new part is). I think that's documented in the FAQ thread, too.

RedY2KS2k

If it's missing badly, it should throw a CEL. What's the code(s)?

Morris

No CEL has lit. Don't know where to look for codes, but would there be codes if the CEL never lit?
Thanks for your ideas. I will try the connections today, and if I have to take it in, at least I have a bit of knowledge, rather than total ignorance.
(Also oil is not the problem, Chris2k03. I have had this S since the first weekend they were introduced in the US, so I am aware of oil consumption and VTEC/oil relationship. Thanks)

djpeak10

When you say missing, Is it going pop pop pop really fast, like it is not getting spark or fuel?