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1991 Toyota Pickup 4 cyl.


jcpike's Avatar
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07-24-02, 03:57 AM   #1  
jcpike
1991 Toyota Pickup 4 cyl.

Re: gas milage.
my pickup,(recently purchased) 4 speed automatic, 119,000 km. is only getting about 18 mpg combined city & highway. This seems low to me, the truck runs fine, except for it idles a little high.
Is there a adjustment to lower the rpms?
What could be causing the low gas milage?
Any help greatly appreciated
Cheers!
John

 
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07-24-02, 05:21 AM   #2  
Thats around the right mpg, also what exactly to you mean by it idles a little high

Larry

 
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07-24-02, 05:40 AM   #3  
jcpike
1991 Toyota Truck

Larry,
When the truck is started in the morning (cold) it revs high (say 1500-1800 rpms. no tach) at first, then gradually the rpms lower as the engine warms up.
But it seems to me that it is still idles high (1000rpms)
Hope this makes sense, when I drive the truck, and stop to park it when I put it in park from drive, the engine seems to increase in rpms.(up to approx. 1000)
Thanks
John

 
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07-24-02, 06:07 AM   #4  
Joe_F
Check the idle air control valve and throttle body for dirt/restrictions. This is a common problem. Make sure the PCV system is working and not clogged if so equipped.

 
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07-24-02, 07:02 AM   #5  
Dosen't have an ISC motor, just air bypass valve for high idle when cold. Their is a screw on the top of the throttle body to adjust warm idle speed

Larry

 
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