1991 t4r

[mark10]

Hello everyone, I have a problem my son just bought a 1991 T4R with 200000 miles the top end been rebuilt have receipts.Ran great when he bought it couple days ago i took it for a ride and notice the oil pressure guage was reading low low and shaking at an idle.So i kept an eye out that day and the guage would go up and down then stayed down for the hour of driving around town. got it up to 55 or so and seem to run ok exept at an idle. Oil been change a week ago and oil is at the full mark. temp guage is in the middle not getting hot. What should i do or start at.

 

[xskydivingdudex]

just to let u no u could prob get more help if u posted in the classic 4runner threads since most of us here done have only 3rd gen 4runners ('96-'02)

 

[mark10]

just to let u no u could prob get more help if u posted in the classic 4runner threads since most of us here done have only 3rd gen 4runners ('96-'02)

Thanks sorry about that

 

[mark10]

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Hello everyone, I have a problem my son just bought a 1991 T4R with 200000 miles the top end been rebuilt have receipts.Ran great when he bought it couple days ago i took it for a ride and notice the oil pressure guage was reading low low and shaking at an idle.So i kept an eye out that day and the guage would go up and down then stayed down for the hour of driving around town. got it up to 55 or so and seem to run ok exept at an idle. Oil been change a week ago and oil is at the full mark. temp guage is in the middle not getting hot. What should i do or start at.

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Last edited by mark10; Today at 10:18 AM.

 

[fourwd1]

What engine?
Why was the top end rebuilt?
Have you checked to see if the ECM has stored any codes?
What does the exhaust look like?

 

[mark10]

T4r

What engine?
Why was the top end rebuilt?
Have you checked to see if the ECM has stored any codes?
What does the exhaust look like?

The guy we bought it from had it done,should of asked,300 engine,and the exhaust is clean,

 

[SanDiegoUndead]

Low oil pressure at idle is common in the 3.0L. However, it should rise when RPMs do.

As for rough idle, could be anything. Vaccum, Ignition, Exhaust, etc.

 

[mark10]

T4r

Low oil pressure at idle is common in the 3.0L. However, it should rise when RPMs do.

As for rough idle, could be anything. Vaccum, Ignition, Exhaust, etc.

Thanks for all your info.I was checking out the wire o the guage and it was loose so far its working.But running rough.i'm going to do some more looking under the hood.

 

[mark10]

another question where is the fuel filter located at.thanks for your help.

 

[90toytruck.]

fuel filter is drivers side frame rail under the truck as for the oil pressure mine gets really low at idle while running it picks up . as for ruff idle when was the last tune up done . could be a num of thing that could cause ruff idle

 

[mark10]

fuel filter is drivers side frame rail under the truck as for the oil pressure mine gets really low at idle while running it picks up . as for ruff idle when was the last tune up done . could be a num of thing that could cause ruff idle

Yah that is my next step. What kind of plugs and wires ? And the fuel filter is on the driver side. Are they easy to change anything i should know. Thanks for your help by the way.