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- 2nd Generation S-series (1995-2005) Tech (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/)

- - Chugging in firsg (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/chugging-firsg-98068/)

DonL	10-31-2018 08:02 PM

Chugging in firsg

So going from stop till about 2500-3000rpm in first, it chugs like it's getting ready to stall, then when it hit 3000, boom! Gone like a snot rocket!

Any ideas? I got a p0144( I believe, havent checked in a while), but it's the evap code. Done the carbon canister, sensor, and gone as far as changing the spider injector. I'm starting to think that its the gasket around the pump. I changed the pump about a year ago, and it's been coming up for about 7 months.

Mike.308

11-01-2018 03:59 PM

Post the fuel trims for idle and for 3k rpm. There could be many factors, like IAC, MAF, leaking injectors.... Way too many to shoot accurately nor to give a sense tip.

DonL	11-01-2018 08:57 PM

Will do, itll be a first for me, so it might take me a little. I have a busy schedule as well coming up, so hoping for before the end of the weekend.

DonL	12-16-2018 11:05 AM

DonL	12-16-2018 11:12 AM

Other pics of the reader
https://cimg9.ibsrv.net/gimg/blazerf...bf8035e302.jpg
https://cimg0.ibsrv.net/gimg/blazerf...2becd515d4.jpg

now these were all taken while engine light has been off... it's been off for a while now. It comes and goes with an evap code. I cant find anything, replaced the carbon box and sensor. Got a new gas cap. Checked the oring on the tank. I'm at a lost. My gas mileage is crap again. When I replaced the o2 sensor and cat, my mileage based back up to 425km/tank. City driving. Now its back down to 350-385km/tank.

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