Failed emissions need to fix some stuff

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Failed emissions need to fix some stuff

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Blazer Forum >> Mechanical & Maintenance >> General Tech Help >> 2nd Gen (1995-2005) Tech >> Failed emissions need to fix some stuff

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Failed emissions need to fix some stuff - 7/2/2008 2:38:58 PM

Spartan66

Posts: 48
Joined: 5/29/2008
Status: offline

ok so i brought my 1998 Blazer LS to get it thru the emissions inspections and i failed. The results show im running codes P0452 and P1870. They said i failed because the 452 code which reads Evaporative Emission System Pressure Sensor/switch Low. I dont have a whole lot of cash to spend on a mechanic (since i still need to register the vehicle by friday before i get charged more.. which sucks..) So i was wondering if this is something i can fix myself. It just seems like something needs to be replaced and im no mechanic but i know my way around a car so im pretty confident in my ability to do it and save the money.

Post #: 1

RE: Failed emissions need to fix some stuff - 7/2/2008 6:13:06 PM

swartlkk

Posts: 13665
Joined: 5/1/2005
From: Waterloo, NY
Status: online

Here ya go on the codes:
P0452 Explained
P1870 Explained

Have a read through them and ask any questions you may have about them.

_____________________________

Kyle-

2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto

(in reply to Spartan66)

Post #: 2

RE: Failed emissions need to fix some stuff - 7/2/2008 8:45:14 PM

Spartan66

Posts: 48
Joined: 5/29/2008
Status: offline

Ok starting with the 452 it looks as if it could be pressure related. I did recently replace the gas cap because it was loose, could this be a condition to set off the code? As for the 1870 code, I didnt really understand it so i think im stuck to bringing it to a shop

(in reply to swartlkk)

Post #: 3

RE: Failed emissions need to fix some stuff - 7/3/2008 7:46:47 AM

guywm25

Posts: 64
Joined: 7/11/2006
From: Brook Park, OH
Status: offline

It doesn''t solve the problem, but what I did was stop by the closest AZ to the emissions testing station and ask them to clear the codes for me or that I would just have to rent the obdII tester to do it myself, they did oblige and passed my emissions test.

_____________________________

1998 blazer 4wd 4.3 vortec 4dr LS

(in reply to Spartan66)

Post #: 4

RE: Failed emissions need to fix some stuff - 7/3/2008 8:07:26 AM

swartlkk

Posts: 13665
Joined: 5/1/2005
From: Waterloo, NY
Status: online

Interesting. They must not plug in... When you clear the codes, it also resets the emissions monitors which requires a completed drive cycle (or many drive cycles) to go from "not ready" to "ready".

_____________________________

Kyle-

2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto

(in reply to guywm25)

Post #: 5

RE: Failed emissions need to fix some stuff - 7/3/2008 10:11:15 AM

Spartan66

Posts: 48
Joined: 5/29/2008
Status: offline

well... they did just plug into the computer they didnt hook me up to any sniffer.... I dont know I will see what i can do. Like i said i only have til friday til i have to register my car.

(in reply to swartlkk)

Post #: 6