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4jh1tc wont rev past 3000rpm

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4jh1tc wont rev past 3000rpm

Postby felixpower » Sun Jun 19, 2022 2:08 pm

hi guys
I am having a problem with my ra rodeo it wont rev past 3000 rpm when in neutrual or driving on the road, It drives fine in the lower revs but after 2500 rpm there is nothing, it will even do 100km/h empty but wont tow a load. It has given a code p0400 which is egr flow I have cleaned the egr valve and checked its operation its good. have replace evrv valve have replaced maf sensor. No change. have played with tps position because I cleaned the intake manifold and may have move it no change. I have also sprayed a little fuel through the evap port in front off the turbo with foot flat to the floor in neutral the revs still does not change it should rev up when I do this.
if its not modified its not mine
felixpower
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Re: 4jh1tc wont rev past 3000rpm

Postby geeves » Sun Jun 19, 2022 2:33 pm

Have you tried reseting the computer? Sorry dont know how. It may still think its faulty
Sanding your knuckles before starting work can help. That way you cant skin them
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geeves
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Re: 4jh1tc wont rev past 3000rpm

Postby felixpower » Sun Jun 19, 2022 3:30 pm

hi geeves yes we have done that its just disconnect the negative on the battery for a couple off mins
if its not modified its not mine
felixpower
Isuzu Baby
 
Posts: 28
Joined: Sat Oct 15, 2011 5:54 pm
Age: 39
Country: australia
City: burpengary
Vehicle: 91 isuzu mu 2.8 manual 2" lift 2" body lift 1" engine and fuel tank lift home made rock sliders bullbar and rear bar 3" inch exhaust intercooler remote oil cooler winch

Re: 4jh1tc wont rev past 3000rpm

Postby geeves » Mon Jun 20, 2022 4:39 pm

sensor for egr valve?
Sanding your knuckles before starting work can help. That way you cant skin them
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geeves
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Posts: 8787
Joined: Sun May 10, 2009 1:36 pm
Location: wellington
Age: 60
Country: NZ
City: Rangiora
Vehicle: 94 bighorn 4jg2
2004 Honda CRV


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