New throttle body - Limp Mode
- Thread starter mikelouf2
- Start date
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You may want to see what OBD code(s) are in the system. Put a good bi-directional scanner on it and when it goes into limp mode write down the code(s) and take a look at the freeze frame data if you can.
drdave81
Full Access Member
Let's back up. What made you replace the throttle body? What brand part did you use?
rockola1971
Full Access Member
When you say its "going into limp mode", what do you actually mean? Check engine light flashing? Or is it on steadily? Does the instrument cluster readout say "reduced engine power mode"?
I put on a new throttle body when I first start it light will come on for the throttle body sensor and it make it go into limp mode also getting po300 code a few times I keep driving it with the scanner to that throttle body relearn itself.
There is a known issue with the TB wires right where they connect to the TB. The wires inside the plastic jacket can break and although they look fine on a visual inspection the copper wiring inside can have a break. You should replace the pigtail and solder the wires together and use heat shrink so they don’t corrode, just in case. There is a TSB on it but I can’t find it. Amazon or most auto parts stores have the pigtails. Here’s a link to a discussion on it. If you search on TYF you can also find mention of it.
Tonyrodz
Resident Resident
Also check your grounds. Especially the driver's side frame, right near the running board. A known issue, especially for guys in the rust belt.
Ditto. Why the replacement, and what brand part?
Got on Amazon put it making noise every time. I put the way on going to return it and get the AC Delco. They have on there
I put a new plug on I think the Amazon junk. It keeps make noise every time I put the key on or when I hit the gas pedal going to return it and get the acdeco they have on there
Tonyrodz
Resident Resident
Electrical noise? Did you replace 1 wire at a time? Since they're all white wires--not color coded. What brand tb did you get?
Yes 1 wire at a time. I took the throttle body off I put the old one back I can getting run put is running rough. Acdeco throttle body is coming in a few days
Check the seller on Amazon even if it says it's an ac delco. A lot of fakes out there. Personally I would only buy online from rockauto or a gm website. I'd rather pay more then be ticked off when the new part doesn't work or work as advertised.
Ok thanks I check into it
