rough idle 91 3.1
03-16-2012, 11:55 AM
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Car: 83 Berlinetta
Engine: 2.8
rough idle 91 3.1
i posted a month abo about it not starting ...it was the ful pump....but now im having another problem.......it starts fine and runs good but as soon as it warms up it starts running like crap.....it didnt do this before
03-16-2012, 06:13 PM
#2
Re: rough idle 91 3.1
Egr valve might be sticking open, make a block off gasket out of a soda can & sandwich it between the valve & the gasket. Then drive it for a couple of days & see how it goes.
You might have a bad coolant temp sensor, it acts up when its hot. You'll need an ohm meter to check it.
You might have a heat related issue causing weak spark.
Any codes?
You might have a bad coolant temp sensor, it acts up when its hot. You'll need an ohm meter to check it.
You might have a heat related issue causing weak spark.
Any codes?
03-17-2012, 03:25 PM
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Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: rough idle 91 3.1
Plus check the idle control valve, AIR pump etc. etc. etc. etc. Sadly you'll probably just have to work your way through everything unless you've got specific codes.
04-13-2012, 08:51 PM
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Car: 83 Berlinetta
Engine: 2.8
Re: rough idle 91 3.1
ok i ulled the codes it threw....i got one for a tps and knock sensor.....could they be the problem?
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