check engine light

myslk230 · 06-30-2006

has anyones check engine light come on after installing a modified intake?

Pinoy Caloy · 05-25-2008

Yes after installing K&N filter, CEL came on w/ DTC PO422-423,442-443,453. Put new gas cap, cleared DTC but after few days came back on. Car runs good but CEL is irritating. Fellow members, I need your input.

**DesignoSLK** · 05-25-2008

Quote:

Originally Posted by Pinoy Caloy

Yes after installing K&N filter, CEL came on w/ DTC PO422-423,442-443,453. Put new gas cap, cleared DTC but after few days came back on. Car runs good but CEL is irritating. Fellow members, I need your input.

Are they the same error codes as before you reset them?

PAPA · 05-25-2008

After market filters can mess up the maf, if over oiled, ( so they claim )

Just may need the maf cleaned

But 170 does not really seem to like K&N and such.

Seem more hassle then their worth IMO

Pinoy Caloy · 05-27-2008

Tenks papa & kevin for your reply. CEL lite came on prior to installing K&N, but went off after filling up gas. Alt & batteries replaced, & radio did not work-code no good, WAIT was displayed on da screen. I cannot input newcode from radio-code.com (paid $28 and for new code). Reset & cleared CEL but came back on again after so manay days esp. after engine starts in da morning. I cleaned MAF w/ CRC maf cleaner, but didn't solve problem. I'm planning to buy da MAF insert from German Star as SLKman did and maybe it will clear CEL or put back stock filter. Tenks guys.

06-30-2006	#1 (permalink)
myslk230 Founding Member Join Date: Jun 2006 Location: US, alabama Vehicle: 1998 slk 230 kompressor Other Toys: 98 jaguar xj8 Posts: 131 Thanks: 0 Thanked 0 Times in 0 Posts	check engine light has anyones check engine light come on after installing a modified intake?

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05-25-2008	#2 (permalink)
Pinoy Caloy SLK World Junior Member Join Date: Apr 2008 Location: Hawaii Vehicle: 2003 SLK320 Sport Other Toys: 2003 CLK320, 1991 Lotus Elan Posts: 4 Country: Thanks: 0 Thanked 0 Times in 0 Posts	Yes after installing K&N filter, CEL came on w/ DTC PO422-423,442-443,453. Put new gas cap, cleared DTC but after few days came back on. Car runs good but CEL is irritating. Fellow members, I need your input.

05-25-2008	#4 (permalink)
PAPA SLK World Member Join Date: Nov 2006 Location: Gwent Vehicle: slk 320 Posts: 71 Country: Thanks: 1 Thanked 2 Times in 2 Posts	After market filters can mess up the maf, if over oiled, ( so they claim ) Just may need the maf cleaned But 170 does not really seem to like K&N and such. Seem more hassle then their worth IMO

05-27-2008	#5 (permalink)
Pinoy Caloy SLK World Junior Member Join Date: Apr 2008 Location: Hawaii Vehicle: 2003 SLK320 Sport Other Toys: 2003 CLK320, 1991 Lotus Elan Posts: 4 Country: Thanks: 0 Thanked 0 Times in 0 Posts	Tenks papa & kevin for your reply. CEL lite came on prior to installing K&N, but went off after filling up gas. Alt & batteries replaced, & radio did not work-code no good, WAIT was displayed on da screen. I cannot input newcode from radio-code.com (paid $28 and for new code). Reset & cleared CEL but came back on again after so manay days esp. after engine starts in da morning. I cleaned MAF w/ CRC maf cleaner, but didn't solve problem. I'm planning to buy da MAF insert from German Star as SLKman did and maybe it will clear CEL or put back stock filter. Tenks guys.

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