3.4 swap bogs like crazy

Runnerfan · 08-17-2009, 01:09 PM

I just got the swap mostly finished, but when I give it some throttle it bogs at first then revs up(this is when parked). When I am driving(under load) if I give it more than a feathering of throttle it will just bog and never come out of it until I let off of the gas. I flipped my MAS incase I had it in backwards and unpluged it and it seemed to be doing the same thing. It had no codes until I unplugged the MAS. I am also running the stock 3.0 exhaust setup with the 2nd O2 sensor installed, would the stock exhaust create to much back pressure, could this be my problem?
Any help would be great thanks.

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904_runner · 08-17-2009, 01:14 PM

Okay lets trouble shoot..

Make sure all the grounds are the motor are completed.. If you are missing some grounds then it will not run properly.

I would check there first, you need all the sensors hooked up as well.

Runnerfan · 08-17-2009, 02:02 PM

I can't see any disconnected ground, off the top of my head I can think of 3 that are connected. I pulled the motor and trany out of a crashed donor, so I left everything plugged into the motor and pulled the wiring harnes out of the fire wall. I also have 2 more questions. Does the fuel pump run constantly on these or should it cycle when it pressures up? And since I put the new M/T in place of my A/T is there some more sensors I need to get from my donor? And I just cut the engine/body harness for the body harness plug, what all should I need to run back into that?

904_runner · 08-17-2009, 02:38 PM

Okay so we need a little more info..

WHat vehicle do you have? Year, trans, engine.
What did the donor come from? Year, trans,

vital22re · 08-17-2009, 03:05 PM

did you check the tune up on the motor?

Runnerfan · 08-17-2009, 03:20 PM

My 4Runner is a 92 A/T. I swaped out the motor and trans for a 96 4runner with a M/T. I have the donor sitting out back if there are any parts I need.

Runnerfan · 08-17-2009, 06:19 PM

Quote:

Originally Posted by vital22re

did you check the tune up on the motor?

All know is the spark plugs looked good.

Runnerfan · 08-17-2009, 06:23 PM

The igniter from my donor was destroyed so I got one on ebay. Are most 6 cyl igniters compatible around this year? I ask because a few of the wires were different colors, but I used my EWD from techinfo.com and the igniter was labeled.

Runnerfan · 08-17-2009, 09:18 PM

Does it matter what the wattage of the resistor is for the tach mod?

vital22re · 08-17-2009, 10:29 PM

are they the double ground electrode?-the spark plugs. Original plug wires?

904_runner · 08-18-2009, 10:13 AM

Quote:

Originally Posted by Runnerfan

Does it matter what the wattage of the resistor is for the tach mod?

10k-Ohm.

Bought a pack of 5 from radio shack for $1

Runnerfan · 08-18-2009, 10:50 AM

I was looking at radio shack's site and they have a few types of 10k ohm resistors that vary by wattage(1/4w,1/8w, 1/2w). So does the wattage not matter, because I can't find any info?

Runnerfan · 08-18-2009, 10:55 AM

Quote:

Originally Posted by vital22re

are they the double ground electrode?-the spark plugs. Original plug wires?

I don't really remember what they were. I was going to compare with my 3.0 plugs because I had just changed them, but the 3.4 plugs looked like they came right out of the box.

Wilko76 · 08-18-2009, 01:55 PM

I don't know what wattage resistor your supposed to use, but I used 1/2 watt (because thats all I could find at the time) and it works ok.

904_runner · 08-18-2009, 03:42 PM

Same here.

1/2 watt 5% tolerance 10k-ohm resistor.

Runnerfan · 08-31-2009, 05:21 PM

I think I found the original problem. I didn't have the wire hooked up that powers alot of the sensors. But now I have a different problem. It is hard to start when it is cold, it backfires and has no power, it has more power in low RPM's and revs very slow over 3000 RPM.

Runnerfan · 08-31-2009, 05:24 PM

Has anyone ever had proplems with pulling codes from the ECU? They kept on getting a error when I tried to get them. I checked and rechecked my plug wires and they are hooked up right.

Runnerfan · 09-05-2009, 01:53 PM

5 out of 6 plugs.
[IMG]

[/IMG]
Do they look dry to any one else?

Runnerfan · 09-05-2009, 01:54 PM

I will try and get a video up of the driving sounds and guages.

agusgus3 · 10-27-2009, 01:21 PM

Quote:

Originally Posted by Runnerfan

Has anyone ever had proplems with pulling codes from the ECU? They kept on getting a error when I tried to get them. I checked and rechecked my plug wires and they are hooked up right.

I have also experienced that issue. I'm going to the shop today again to try and get some codes... My 3.4 isn't even starting right now and the spark plugs are black and soaked...

vital22re · 10-27-2009, 02:18 PM

plugs look okay/clean to me. how do your plug wires look? you replace your fuel filter? as far as your obd2 port, are you running power to it on the purple wire? should be 7.5 amp fuse to it. that was my problem.

904_runner · 10-27-2009, 02:58 PM

How was your maf?

I have a k&N filter on mine and the damn oil sucks off the filter element and makes it run like crap.. Cleaned my maf and its good to go.

Runnerfan · 10-31-2009, 04:34 PM

I think the reason I was getting an error was because I had hot wired my STA wire on the ECU, so when I would turn on the key to get codes the ECU thought that I was trying to start it. That was also why it was running like crap, because my ECU thought that I was constantly trying to start it, which probably changed timing and what not.

08-17-2009, 01:14 PM	#2 (permalink)
904_runner Registered User Join Date: Mar 2008 Location: Chico, California Posts: 3,782	Okay lets trouble shoot.. Make sure all the grounds are the motor are completed.. If you are missing some grounds then it will not run properly. I would check there first, you need all the sensors hooked up as well. __________________ Mike 1990 4runner: 3.4 swapped, 5-speed, sas'd, Rear leaf swap, Locked, 5.29's, 39.5" iroks on Beadlocks, Armor'd Longfields, Duals coming soon: My build thread http://www.yotatech.com/f152/904_run...thread-158746/ http://www.treadlightly.org/ http://www.pirate4x4.com/tech/billav...ery/index.html

08-17-2009, 02:38 PM	#4 (permalink)
904_runner Registered User Join Date: Mar 2008 Location: Chico, California Posts: 3,782	Okay so we need a little more info.. WHat vehicle do you have? Year, trans, engine. What did the donor come from? Year, trans, __________________ Mike 1990 4runner: 3.4 swapped, 5-speed, sas'd, Rear leaf swap, Locked, 5.29's, 39.5" iroks on Beadlocks, Armor'd Longfields, Duals coming soon: My build thread http://www.yotatech.com/f152/904_run...thread-158746/ http://www.treadlightly.org/ http://www.pirate4x4.com/tech/billav...ery/index.html

08-17-2009, 03:05 PM	#5 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 679	did you check the tune up on the motor? __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers

08-17-2009, 10:29 PM	#10 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 679	are they the double ground electrode?-the spark plugs. Original plug wires? __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers

08-18-2009, 03:42 PM	#15 (permalink)
904_runner Registered User Join Date: Mar 2008 Location: Chico, California Posts: 3,782	Same here. 1/2 watt 5% tolerance 10k-ohm resistor. __________________ Mike 1990 4runner: 3.4 swapped, 5-speed, sas'd, Rear leaf swap, Locked, 5.29's, 39.5" iroks on Beadlocks, Armor'd Longfields, Duals coming soon: My build thread http://www.yotatech.com/f152/904_run...thread-158746/ http://www.treadlightly.org/ http://www.pirate4x4.com/tech/billav...ery/index.html

08-17-2009, 02:02 PM	#3 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	I can't see any disconnected ground, off the top of my head I can think of 3 that are connected. I pulled the motor and trany out of a crashed donor, so I left everything plugged into the motor and pulled the wiring harnes out of the fire wall. I also have 2 more questions. Does the fuel pump run constantly on these or should it cycle when it pressures up? And since I put the new M/T in place of my A/T is there some more sensors I need to get from my donor? And I just cut the engine/body harness for the body harness plug, what all should I need to run back into that?

08-17-2009, 03:20 PM	#6 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	My 4Runner is a 92 A/T. I swaped out the motor and trans for a 96 4runner with a M/T. I have the donor sitting out back if there are any parts I need.

08-17-2009, 06:23 PM	#8 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	The igniter from my donor was destroyed so I got one on ebay. Are most 6 cyl igniters compatible around this year? I ask because a few of the wires were different colors, but I used my EWD from techinfo.com and the igniter was labeled.

08-17-2009, 09:18 PM	#9 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	Does it matter what the wattage of the resistor is for the tach mod?

08-18-2009, 10:50 AM	#12 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	I was looking at radio shack's site and they have a few types of 10k ohm resistors that vary by wattage(1/4w,1/8w, 1/2w). So does the wattage not matter, because I can't find any info?

08-18-2009, 01:55 PM	#14 (permalink)
Wilko76 Registered User Join Date: May 2009 Location: Wodonga, VIC, Australia Posts: 15	I don't know what wattage resistor your supposed to use, but I used 1/2 watt (because thats all I could find at the time) and it works ok.

08-31-2009, 05:21 PM	#16 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	I think I found the original problem. I didn't have the wire hooked up that powers alot of the sensors. But now I have a different problem. It is hard to start when it is cold, it backfires and has no power, it has more power in low RPM's and revs very slow over 3000 RPM.

08-31-2009, 05:24 PM	#17 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	Has anyone ever had proplems with pulling codes from the ECU? They kept on getting a error when I tried to get them. I checked and rechecked my plug wires and they are hooked up right.

09-05-2009, 01:53 PM	#18 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	5 out of 6 plugs. [IMG][/IMG] Do they look dry to any one else?

09-05-2009, 01:54 PM	#19 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	I will try and get a video up of the driving sounds and guages.

10-27-2009, 02:18 PM	#21 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 679	plugs look okay/clean to me. how do your plug wires look? you replace your fuel filter? as far as your obd2 port, are you running power to it on the purple wire? should be 7.5 amp fuse to it. that was my problem. __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers

10-27-2009, 02:58 PM	#22 (permalink)
904_runner Registered User Join Date: Mar 2008 Location: Chico, California Posts: 3,782	How was your maf? I have a k&N filter on mine and the damn oil sucks off the filter element and makes it run like crap.. Cleaned my maf and its good to go. __________________ Mike 1990 4runner: 3.4 swapped, 5-speed, sas'd, Rear leaf swap, Locked, 5.29's, 39.5" iroks on Beadlocks, Armor'd Longfields, Duals coming soon: My build thread http://www.yotatech.com/f152/904_run...thread-158746/ http://www.treadlightly.org/ http://www.pirate4x4.com/tech/billav...ery/index.html

10-31-2009, 04:34 PM	#23 (permalink)
Runnerfan Registered User Join Date: Jun 2009 Posts: 36	I think the reason I was getting an error was because I had hot wired my STA wire on the ECU, so when I would turn on the key to get codes the ECU thought that I was trying to start it. That was also why it was running like crap, because my ECU thought that I was constantly trying to start it, which probably changed timing and what not. __________________ 92 4Runner 3.4 Swaped Last edited by Runnerfan; 10-31-2009 at 04:36 PM.

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