i need help asap!!!

[racerx82989]

ok...so the 02 blazer is jacked up. :dammit:

It will start like shit. Runs then dies when i stop at a sign or red light. volt meter bonces around quickly from 13 to 14/15 when ideling. but runs fine when i crusing.

i changed the altrnotor and nothing changed.


what should i try now???

plugs are good and fuel pump was changes about a month or two ago

[crasher]

getting any codes?

[racerx82989]

Nope, no ses.

Could there be a code if the light wasn't on?

[MyFirstCamaro]

sounds like a fuel problem to me

[racerx82989]

well what should my next step be?

fuel pressure test?
where do i conect the gauage and what size hose end do i need?

[04SilveradoMykk]

Check your battery terminals / connections. Pay close attention to the computer ground. I've seen crazy charging problems due to corrotion on battery terminals, and crazy engine problems because of poor comp grounds. once I had a customer complain of something similar... I put her car on the charging system tester. The alt was putting out 18v, at idle. I automatically assumed something was up with the alt, I changed it. And the new alt immediately was putting out 18V. So next I checked bat terminals, a little corrosion but nothing I thought was alarming. I cleaned the terms anyway, wire brush & baking soda/water mix... Fixed the problem And her charging system went back to normal.

:dammit:

[racerx82989]

^^^ ok i'll check that out.

Thanks!

[racerx82989]

well every thing seamed ok but i cleaned it anyhow...problem has become less now after driving for two day with the new alternator on there. but every now and then the rpm's drop and bounce around when I'm stopped or in P.

[racerx82989]

well somehow its running great now lol...i'm sure its a ground some where so i'll go threw and check it out this weekend.

Thanks guys!