11 replies to this topic

[wannacar]

Any help or suggestions would be great. I have read about the denatured alchol trick. Do you think it is worth a shot?

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[Swag Swag]

What kind of car? What year? Check engine light on?

[wannacar]

97 850 wagon, No CEL.

[850maybe]

wannacar, on 05 February 2012 - 05:17 AM, said:

97 850 wagon, No CEL.

Could be any number if things but the likely culprits are lean fuel mixture, dying catalytic convertor or oxygen sensors. How many miles?

[scumcity14]

not denatured..use isopropyl in less than a 1/4 tank. This will allow you to pass a tailpipe test only. It will not allow you to pass a visual and it will not fix any problems.

[wannacar]

scumcity14, on 05 February 2012 - 04:19 PM, said:

not denatured..use isopropyl in less than a 1/4 tank. This will allow you to pass a tailpipe test only. It will not allow you to pass a visual and it will not fix any problems.

I will try this first. How much should i use. Where can i get isopropyl.

[scumcity14]

wannacar, on 05 February 2012 - 09:21 PM, said:

I will try this first. How much should i use. Where can i get isopropyl.

From any drugstore etc..90%. clear not scented or anything. its common rubbing alcohol. use a 16-20 oz bottle on @ 4 gallons of gas. I have used this trick for almost 20 years and it worked even on old CIS Volkswagens

[wannacar]

should i drive it alittle before taking it in there? should it be hot or cold?

[T-5Bandit]

wannacar, on 06 February 2012 - 06:38 PM, said:

should i drive it alittle before taking it in there? should it be hot or cold?

Never take a car in for smog cold, the CAT needs to be hot to keep the NOX levels low. Drive it around on the freeway for a good 15 - 20 minutes to get the CAT hot, then take it straight to the smog shop. Try to minimize any long stops so the CAT doesn't cool down too much. .

[martins4432]

Hello I am having the same problem here in Cali ...Just wanted to know if your car passed with the isopropyl ? Thanks

[wannacar]

martins4432, on 28 February 2012 - 06:33 AM, said:

Hello I am having the same problem here in Cali ...Just wanted to know if your car passed with the isopropyl ? Thanks

No, my numbers went higher. Cant really explain why, someone here can probably help.

[martins4432]

I took my car to smog check to day with denatured alcohol and came out gross polluter.......Oh well putting a new Cat tomorrow...This SUCKS