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95
Nov 17, 2011 13:39:01 GMT -6
Post by twitch94 on Nov 17, 2011 13:39:01 GMT -6
tryin to figure out a issue im having. got a 95 suburban tbi 350 when its in park and neutral it idles smooth at about 1000 rpm. i push on the brake and put it into gear and it drops low and either dies or idle real low and ruff. any ideas i have replaced the IAC already checked the timing and just cant figure it out . thanks for the help.
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95
Nov 18, 2011 7:43:10 GMT -6
Post by CFSIII on Nov 18, 2011 7:43:10 GMT -6
Sounds like it could be a vacuum leak.
Disconnect the vacuum line at the booster and plug the line see if there is any change when on break and in gear, if not reconnect vacuum line. Be careful during this process because your breaks will be weak.
With booster connected you could also try spraying WD around the intake mating surfaces and below throttle body when in gear and on break. Hard to do by your self unless you have really long arms ;D, If idle picks up when spaying there is a vacuum leak.
You could check the fuel pressure. Maybe upon demand it is laking sufficient pressure.
These are all just guesses, good luck!
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95
Nov 22, 2011 17:39:49 GMT -6
Post by CFSIII on Nov 22, 2011 17:39:49 GMT -6
Hey twitch, I noticed that you have checked in from time to time.
Have you gotten the issue with the suburban fixed?
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