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View Full Version : Very Rough Idle..Sometimes???


toyin'
04-01-2007, 08:17 AM
Hey, Im new here, as I'm sure you all know....I have a question about my '89 4runner....Sometimes, when stopped, It get a real low and rough idle, almost being starved of either gas or air...not sure....I've check the mass air flow and the egr and still doing it....It's very intermitent, ran the computer for codes and got a rich run code....Im kinda' confused, not sure what to check next, done plugs and wires, full tune up....HMMM.......am I having a blond moment???:confused0006:

NeoAnderson
04-01-2007, 08:44 AM
Hit it with a stick.......[f]





:D

highwaystar
04-01-2007, 07:17 PM
what motor?

V6 Idles Very very low at like 600 rpm

I noticed you have a body lift, is it new? maybe a gas line got kinked while lifting body?

hilander
04-01-2007, 08:22 PM
I had problems with my brake booster. It made the truck idle low sometimes.

sj-x 500
04-01-2007, 08:28 PM
turn in the idle screw

StillRYE
04-02-2007, 08:18 AM
mine did the same thing when I had my foot on the brake try pumping the brake and see if thats whats causing it

toyin'
04-02-2007, 12:43 PM
Hit it with a stick.......[f]





:D

I've hit it with lots of sticks, trees and rocks, nothing seems to work!:dontknow:

In The Zone
04-02-2007, 12:49 PM
o2 sensor

Stetson
04-02-2007, 04:56 PM
4CYL??? , THE COMPUTER IS NOT REFERENCING IDLE - CHECK YOUR TPS, COOLANT TEMP SENSOR, SENSOR SWITCH, IF ITS A V6 OR EVEN A 4CYL FOR THAT MATTER, DO A COMPRESSION TEST, IVE SEEN IT A NUMBER OF ENGINES HAVING POOR IDLE CONDITIONS WHEN THE HEAD GASKET BEGINS TO FAIL. (BUT NO OTHER SIGNS EG COOLANT IN OIL, WHITE SMOKE ETC.)

Redneck_04
04-02-2007, 07:16 PM
tps thats what was wrong wit my freinds

toyin'
04-02-2007, 08:55 PM
4CYL??? , THE COMPUTER IS NOT REFERENCING IDLE - CHECK YOUR TPS, COOLANT TEMP SENSOR, SENSOR SWITCH, IF ITS A V6 OR EVEN A 4CYL FOR THAT MATTER, DO A COMPRESSION TEST, IVE SEEN IT A NUMBER OF ENGINES HAVING POOR IDLE CONDITIONS WHEN THE HEAD GASKET BEGINS TO FAIL. (BUT NO OTHER SIGNS EG COOLANT IN OIL, WHITE SMOKE ETC.)

No other signs...no oil in coolant, no smoke..any color, compression is good, haven't checked the o2 or tps...today the idle has started sticking at a high rpm sometimes, rev it and it comes down, rough idle still, but not when driving, just when in neutral, stopped...I guess i'll just start with the tps, it's cheep....thanx for the help.[36]

toyin'
04-02-2007, 08:58 PM
what motor?

V6 Idles Very very low at like 600 rpm

I noticed you have a body lift, is it new? maybe a gas line got kinked while lifting body?

It had the lift when I bought it and it was runnin' fine up till a week ago. It's a 4cyl...with variable idle....lol:p