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> Check Engine Light On Gearbox Change Faulty, Help?
evac
post Oct 27 2007, 01:21 AM
Post #1


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Location: Dandenongs Vic
Drives: 92 Magna
My 92 2.6 Magna check engine light comes on after a couple of minutes and the transmission hangs on and only changes into third at 70 k and top at 90k It also cuts out on sharp bends. Any answers would be appreciated
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gurnick
post Oct 27 2007, 03:18 AM
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Location: New Zealand
Drives: 1999 Mitsubishi Legnum VR4
Hey mate,
Have you tried removing the negative lead from the battery for a minute or two, then reconecting it and driving the vehicle nicely for about 10-15 ks. While doing that, you have to go through the gears slowly, and if you have a trip-tronic gearbox, make sure you use those gears, and change around the 2500 rpm mark, if not drive your auto like a manual. I have had gearbox troubles with my VR4, and after changing the lock-up solenoid, i did the above information, and now it works like a charm.
Hope this healps?!
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chain rattle
post Oct 27 2007, 05:28 PM
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Magna Buff
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Drives: 1989 TN .SE magna wagon



as long as the motor and auto have been serviced
next

may be a faulty TPS (on the throttle body )


ICU comptuter controller (engine management for efi
rhs passenger side of the foot well

the TCU location unknown

if auto oil is light red and you have forward and reverse it is no a mechanical problem with the box

only electronic
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evac
post Oct 27 2007, 09:45 PM
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Location: Dandenongs Vic
Drives: 92 Magna
Thanks. I will try another TPS tomorrow. The light used to go out when I cleaned all the terminals- (they were green) and wriggled the terminal to the TPS but this does not work anymore. I have disconnected the battery over night for no result.
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chain rattle
post Oct 28 2007, 01:08 AM
Post #5


Magna Buff
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Drives: 1989 TN .SE magna wagon



think you found the prob ...good luck
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evac
post Oct 28 2007, 11:07 AM
Post #6


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Drives: 92 Magna
Changed the TPS for no result. The car runs fine even though the check engine light is on but it only changes gear by road speed not load or throttle position. This only happened after I cleaned all the terminals (Yes they are very clean) so I assume its electrical
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chain rattle
post Oct 28 2007, 02:43 PM
Post #7


Magna Buff
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TCU faulty not torque converter

or check air flow meter/ o2 sensor

something simple
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evac
post Oct 28 2007, 10:07 PM
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Location: Dandenongs Vic
Drives: 92 Magna
I think I have found the fault. Loom is faulty near the connector plug on the TCP. If I wriggle the wires a bit the light goes out and the trans changes correctly. I will solder a new plug and wiring in today.
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chain rattle
post Oct 29 2007, 01:09 AM
Post #9


Magna Buff
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Member No.: 19,697
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Location: Brisbane Australia
Drives: 1989 TN .SE magna wagon



good work
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