Losing power at 2k rpm.

Cakes · 06-13-2012, 09:00 PM

What's up everyone? I have a little problem at the moment that's driving me crazy!

Alright so just picked up an 87 N/A auto, that has been sitting for about a good 7 months. Bought it cheap, an lets just say I got what I payed for. The day after I picked it up I started going through an cleaning/ inspecting what it further needed to get it going till I do a swap. Replaced the cam seals, plugs, wires, exhaust manifold gasket (previous one was blown), an flushed everyhting. Oh also did a thorough inspection of all the lines, obviously. Buuut I screwed up somewhere around cleaning the TB an took off the TPS, after thinking I had set it up properly it doesnt rev past 2k with the pedal but will with the throttle wide open manually, takes a little time though. Afterwards sounds like it wants to stall out under 500, then rises back to 7-800 an idles fines. Actually does everything fine till it hits 2k

I've checked this over and over again an can not seem to get it right. I'm at a lose and would like another opinion or two.

Damn almost forgot I have 41 popping up, so is that a new TPS? or am I retarded and can't calibrate it right? I dont see how it could be a short, and I'm pretty the ECU is fine.

cre · 06-14-2012, 01:25 AM

Code 41 is a hardware fault, not related to anything you can calibrate. If you're certain the wiring and ECU are sound then yes a new TPS would be called for. Testing information for the TPS is covered in the TSRM in the EFI section under Throttle Body.

Cakes · 06-14-2012, 02:14 AM

Awesome thank you greatly for the advice Cre. I'll grab a new one and see what happens. Just wanted to make sure before buying something I didn't need.

cre · 06-14-2012, 04:07 AM

Test yours, don't just go and blindly buy one.

06-13-2012, 09:00 PM	#1
Cakes Stock Join Date: Jun 2012 Location: Las Vegas Posts: 2	Losing power at 2k rpm. What's up everyone? I have a little problem at the moment that's driving me crazy! Alright so just picked up an 87 N/A auto, that has been sitting for about a good 7 months. Bought it cheap, an lets just say I got what I payed for. The day after I picked it up I started going through an cleaning/ inspecting what it further needed to get it going till I do a swap. Replaced the cam seals, plugs, wires, exhaust manifold gasket (previous one was blown), an flushed everyhting. Oh also did a thorough inspection of all the lines, obviously. Buuut I screwed up somewhere around cleaning the TB an took off the TPS, after thinking I had set it up properly it doesnt rev past 2k with the pedal but will with the throttle wide open manually, takes a little time though. Afterwards sounds like it wants to stall out under 500, then rises back to 7-800 an idles fines. Actually does everything fine till it hits 2k I've checked this over and over again an can not seem to get it right. I'm at a lose and would like another opinion or two. Damn almost forgot I have 41 popping up, so is that a new TPS? or am I retarded and can't calibrate it right? I dont see how it could be a short, and I'm pretty the ECU is fine.

06-14-2012, 01:25 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Code 41 is a hardware fault, not related to anything you can calibrate. If you're certain the wiring and ECU are sound then yes a new TPS would be called for. Testing information for the TPS is covered in the TSRM in the EFI section under Throttle Body. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-14-2012, 04:07 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Test yours, don't just go and blindly buy one. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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06-14-2012, 02:14 AM	#3
Cakes Stock Join Date: Jun 2012 Location: Las Vegas Posts: 2	Awesome thank you greatly for the advice Cre. I'll grab a new one and see what happens. Just wanted to make sure before buying something I didn't need.