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Need help my truck was efi and now been converted to machine

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Need help my truck was efi and now been converted to machine

Postby Shaneo12379 » Sat Nov 18, 2017 5:57 am

Hey there guys and girls so I got a little problem I had my isuzu wizard 4jg2 changed from a efi pump to a manual one and being auto it had a few problems now when I put it under load towing the boat it not changing gear and it's flashing trans lights
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Re: Need help my truck was efi and now been converted to mac

Postby geeves » Sat Nov 18, 2017 9:33 am

tps not set correctly. I would be surprised if a 96 wizard had efi????
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Need help my truck was efi and now been converted to mac

Postby stardog » Sat Nov 18, 2017 2:57 pm

A 96 wizard should be mechanical pump to start with unless its be changed at some stage or maybe the transmission is getting to hot towing do you have a after market trans cooler on it but like geeves said could be tps set wrong on it.
I have a after market trans cooler on my wizard and tow a 2 ton trailer and don't have any problems with it changing gears or trans lights on the dash.
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Re: Need help my truck was efi and now been converted to mac

Postby Shaneo12379 » Sat Nov 18, 2017 4:59 pm

Hey guys very sorry it's a 1998 and was a efi pump I have put a 2.5" exhust and 3" Air intake and 3" stainless steel snorkel also running a 4jx1 turbo and now done a mechanical pump and the gearbox not changing under load
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Re: Need help my truck was efi and now been converted to mac

Postby stardog » Sat Nov 18, 2017 5:18 pm

do you have kick down cable connected to I injector pump from the gearbox I don't know how the efi system is set up never seen one myself everything in Australia is 90-96 mechanical injection pumps.
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Posts: 847
Joined: Tue Nov 10, 2009 6:14 pm
Location: sydney nsw australia
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Vehicle: 94 mu was 3.1 turbo intercooled now 2.8td rodeo gear drive engine and intercooled and fuel delivery turned up 3" system from turbo 5 speed manual arb bullbar 13000 LB winch max winch snorkel HID headlights HID IPF spotlights blue led dash lights LOKKA front diff new bushes shocks all round 80 ch unden uhf sony xplode mp3 player back seats removed and storge system put in.
96 wizard 3.1 pretty stock for now but have plans intercooler bulbar winch snorkel.

Re: Need help my truck was efi and now been converted to mac

Postby geeves » Sun Nov 19, 2017 5:32 am

why did you lose the efi pump?
On the manual pump models the auto uses an ecu for speed control and not much else. gear changes are governed by tps voltage kick down cable and a speed pulse sent from the speedo. Later boxes had a full ecu doing everything but I dont know if this happened during the 4jg2 life cycle. Check the adjustment of the tps with a voltmeter check the adjustment of the kick down cable and hopefully things will be fixed
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Need help my truck was efi and now been converted to mac

Postby mudslinger » Sun Nov 19, 2017 5:34 pm

shane, the trans ecu needs a feed from the speed sensor which goes via the gauge cluster to the ecu. if the trans ecu isnt getiing a signal then it will cause your lights for the trans to flash and it wont change up past 3rd gear. what have you or gav done to it lol
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Re: Need help my truck was efi and now been converted to mac

Postby Shaneo12379 » Wed Nov 22, 2017 4:43 pm

Haha how did ya no gav did it. And it seems to be runing good now . It go in all the gears now . Still have the light flashing . But I had to adjust the tps a few times till I got it right but the only thing now is she u start it from cold or sitting for a wail it puffs out white smoke and misses for about 30 secs I going to look at getting it tuned soon by repowers
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Re: Need help my truck was efi and now been converted to mac

Postby mudslinger » Wed Nov 22, 2017 5:15 pm

i know everything haha, white smoke not good tho
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Re: Need help my truck was efi and now been converted to mac

Postby Shaneo12379 » Wed Nov 22, 2017 5:20 pm

Text me 0278411614 have a wee chat about it
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Re: Need help my truck was efi and now been converted to mac

Postby mudslinger » Wed Nov 22, 2017 5:39 pm

dont have a ph bro haha its broken fb me tomoro im off for the night
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Re: Need help my truck was efi and now been converted to mac

Postby Shaneo12379 » Wed Nov 22, 2017 6:12 pm

I would but I still not sure who u are or what's ya name haha u fb me
Shaneo12379
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