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Loss of power uphill (troubleshooting help)

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Old 03-11-2012, 07:39 PM
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Loss of power uphill (troubleshooting help)

Ok so I have a 93 4runner with a 3vz-E(v6) engine. automatic. 4wd

A few weeks ago it started having trouble going uphill. Im talking it wont go over 15-30 mph on anything steeper than a few 5deg incline. It'll do this then suddenly full power will come back then a few seconds later it'll lose power again. pushing down on the accelerator does nothing when its doing this. no CEL.

Ive been trying to troubleshoot this for a few weekends now. I pulled codes and came back with nothing. So I downloaded the FSM and went through it looking for ideas.

so far I've checked the TPS, timing, fuel pump, fuel pressure regulator, distributor, coil, wires, plugs, EGR and i even tried a little voodoo ritual involving throwing chicken bones at it. still no luck.

Any of you had a similar experience or have any idea what else i should check?
Thanks in advance.
Old 03-11-2012, 08:43 PM
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Well it sounds a little like electrical. Did the transmission kick down? to a lower gear? what does the transmission do when this is happening?
Old 03-12-2012, 07:23 PM
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sounds like a tranny problem
Old 04-19-2024, 04:09 AM
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Same thing happening

Originally Posted by nouseforaname1246
Ok so I have a 93 4runner with a 3vz-E(v6) engine. automatic. 4wd

A few weeks ago it started having trouble going uphill. Im talking it wont go over 15-30 mph on anything steeper than a few 5deg incline. It'll do this then suddenly full power will come back then a few seconds later it'll lose power again. pushing down on the accelerator does nothing when its doing this. no CEL.

Ive been trying to troubleshoot this for a few weekends now. I pulled codes and came back with nothing. So I downloaded the FSM and went through it looking for ideas.

so far I've checked the TPS, timing, fuel pump, fuel pressure regulator, distributor, coil, wires, plugs, EGR and i even tried a little voodoo ritual involving throwing chicken bones at it. still no luck

Any of you had a similar experience or have any idea what else i should check?
Thanks in advance.
did you ever figure out what this issue was.. mine is doing the exact crap.. wasnt the FI preaaurw damper either.. smh
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