99 alero wont stay running - Engine Troubleshooting


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99 alero wont stay running

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mjungier
New User

May 14, 2008, 3:37 PM

Post #1 of 5 (2460 views)

99 alero wont stay running	Sign In

I have a 99 alero and for a while now it will turn over, but it usually wont stay running unless i feather the gas and once it do it enough, it seems to hook up or whatever and it stays running. i've had problems that i would be driving for 5 min then come to a light and brake and it would just stall.. so sometimes i have to drive it with 2 feet one keeping the rpms past 1000 and the other used to brake. it usually starts NORMAL when its cold but when its warm i have to feather the gas like i said above. i bought it like 2 years ago and when i bought it the dealer put in a new fuel pump so i dont know. help is appreciated.. thanks

Double J
Veteran / Moderator
Double J profile image

May 14, 2008, 7:28 PM

Post #2 of 5 (2456 views)

Re: 99 alero wont stay running	Sign In

I would start with getting the Fuel Pressure checked with a Fuel Pressure Gauge.
Sounds like your describing a Fuel Pump fault.
Fuel pressure should be between 41-47 PSI

Any check engine light coming on?
Have computer checked for trouble codes as well.

Let us know

Jim

mjungier
New User

May 15, 2008, 6:50 AM

Post #3 of 5 (2450 views)

Re: 99 alero wont stay running	Sign In

My one friend tried that and he said the fuel pressure was reading good. I've tired a new MAF sensor and a MAP sensor and neither were the problem. The light is on because the 02 sensor is (bad) I guess because I currently dont have a cat converter, which was removed because we thought that would be the problem. I just have a straight pipe so its not even connected.

mjungier
New User

May 24, 2008, 4:22 AM

Post #4 of 5 (2426 views)

Re: 99 alero wont stay running	Sign In

Tom Greenleaf
Ultimate Carjunky / Moderator
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May 24, 2008, 8:20 AM

Post #5 of 5 (2423 views)

Re: 99 alero wont stay running	Sign In

What was the fuel pressure reading? Put the converter and o2 sensor back on now as that wasn't the trouble and confuses the situation now if not even plugged in.........

T

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