Random shut offs

[billyblunk3]

Hey guys. So I have a 2000 sr5. It has roughly 223k. A few months ago the fuel pump failed. Had a local shop put a new one in from Toyota along with the fuel sender and new fuel filter. Once that was done, the truck started to have some hard take offs like jolting and rocking the truck like a bucking bronco. It started doing that around half a tank of fuel. I've always run 91 in my vehicles. Sometimes when you do a hard take off, it will just shut off. Just replaced the spark plugs and wires with OEM. Timing is correct. What can my issue be?

 

[foxrider56]

Hey guys. So I have a 2000 sr5. It has roughly 223k. A few months ago the fuel pump failed. Had a local shop put a new one in from Toyota along with the fuel sender and new fuel filter. Once that was done, the truck started to have some hard take offs like jolting and rocking the truck like a bucking bronco. It started doing that around half a tank of fuel. I've always run 91 in my vehicles. Sometimes when you do a hard take off, it will just shut off. Just replaced the spark plugs and wires with OEM. Timing is correct. What can my issue be?

EfI relay? go into the fuse block under the hood and switch the relays of the EFI and rear taillights see if it fixes the problem

 

[ltsr]

Hey guys. So I have a 2000 sr5. It has roughly 223k. A few months ago the fuel pump failed. Had a local shop put a new one in from Toyota along with the fuel sender and new fuel filter. Once that was done, the truck started to have some hard take offs like jolting and rocking the truck like a bucking bronco. It started doing that around half a tank of fuel. I've always run 91 in my vehicles. Sometimes when you do a hard take off, it will just shut off. Just replaced the spark plugs and wires with OEM. Timing is correct. What can my issue be?

Have you checked for codes? if so, what were your findings?

 

[billyblunk3]

I was doing more reading and I'm going to switch the relay tomorrow morning before I drive around. No codes at all. I have a scan gauge hooked up and I've tried running codes with my snap on diagnostic tool.

 

[billyblunk3]

I'm still having this issue. I dropped the vehicle off to a local shop and the mechanics can't figure it out. I put a new efi relay in and nothing changed. The truck is not bringing up any CEL codes. The hard take offs seem to be happening when the truck is at operating temperature and it also feels like it loses some power when at operating temperature. Any ideas?

 

[a216vcti]

I'm still having this issue. I dropped the vehicle off to a local shop and the mechanics can't figure it out. I put a new efi relay in and nothing changed. The truck is not bringing up any CEL codes. The hard take offs seem to be happening when the truck is at operating temperature and it also feels like it loses some power when at operating temperature. Any ideas?

TPS or a loose vacuum hose? I just fixed a 4 month issue by tightening the hose clamp around my air intake tube connection at the throttle body.

You may want to spray carb cleaner around the vacuum hoses while it's running to find any changes in idle indicating a leak.