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'04 GC "Very small emissions leak" code
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04-20-2009, 10:43 AM
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#1 | |
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Registered User
1997 TJ Wrangler
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'04 GC "Very small emissions leak" code
Wifes '04 GC Laredo, bone stock 2wd 4.0 auto. CE Light came on a few weeks ago, I plugged the "diagnoser" in and got 2 codes that read something about "very small emissions/evap leak". I basically ignored them and turned them off, but it came on again this weekend. I plugged in again, and got the same codes. I'm thinking if its a "very small" vacuum leak then I may never find it. I was thinking it may be the gas cap (it's one of those OEM caps that "clicks" before it gets tight, so you really don't know how tight it is) but I doubt very seriously that I'd be that lucky. We haven't noticed any changes in fuel economy, power, etc... Any suggestions? Thanks for all input.
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04-20-2009, 12:01 PM
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#2 |
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Registered User
1997 XJ Cherokee
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tighten down the gas cap, make it click a few times. The code will be on there for a few start ups (probably about 8 start ups). Thats the first thing to check when you get that code.
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04-20-2009, 12:34 PM
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#3 |
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Registered User
2002 WJ
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I've had this twice so far -- neither time was simply the gas cap.
 Both times it was a pinhole leak in one of the lines near the gas tank. I couldn't locate it on my own, but that shop that did apparently used some smoke method.
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'02 WJ: 4.7L, 5", 231HD w/SYE, 35's, Clayton's, locked, chopped & armor '06 XK: 65th Anniversary Edition '98 XJ: Stolen www.endlessmtnfab.com |
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04-20-2009, 05:28 PM
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#4 | |
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Registered User
1994 YJ Wrangler
Join Date: Jul 2006
Location: West Valley City, Ut
Posts: 2,247
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Quote:
Most of the time that series of engine codes is tripped by a bad gas cap, so if your 2004 still has the OEM cap, it might be time for a replacement.
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04-20-2009, 06:38 PM
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#5 |
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Registered User
2001 WJ
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Maybe try switching brands of gas. It worked for me.
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