Massive loss of power
02-26-2013, 07:12 PM
#21
Registered User
@Gamefreakgc I seafoamed it and it didn't smoke much, then this morning when I pulled the O2 sensor, and last night when I finally got it to start up after the fuel filter feassco (spelling?) It smoked a little bit but nothing crazy. To be honest with you, I have yet to look at the oil. I am not going to touch her till tomorrow. Also, I agree with you I am feeling very swindled right now. I don't think he did it on purpose though he said it had sat for a good little while before he started to try to sell it.
Back to the trouble shooting, I pulled the O2 sensor and nothing changed. Was actually a little it of a struggle to stay running at first, but it leveled out and didn't make it 100 ft from the house and had to turn around and head back. Again, it took 4LO to make it up the driveway. I am ready to shoot this thing in the face. I am hoping all the stuff listed below will fix this thing.
I went to the parts store today and order all sorts of new goodies. I ordered a new head gasket, and everything required to change it, new timing belt and all associated gaskets and what not, and all the stuff to do the thermostat. I feel like I am so close to just rebuilding this thing. I am ready for her to run right. I have another question for y'all, I am going this far into it, should I just go ahead and pull the heads, and take them to a machine shop. How much would it cost me to have a valve job and all that jazz cost me, and would it actually be benificial to go ahead and do it now, or just to much.
Anyone in the Fort Walton Beach area feel LIke joining the suck feast that will ensue this weekend and helping out with all this good jazz? If so feel free to PM me, I will let you know what the plan is. There will be cheap beer in it for anyone brave enought to help. Wallet can't afford the good stuff. Keith Stone till this whole thing is over.
Back to the trouble shooting, I pulled the O2 sensor and nothing changed. Was actually a little it of a struggle to stay running at first, but it leveled out and didn't make it 100 ft from the house and had to turn around and head back. Again, it took 4LO to make it up the driveway. I am ready to shoot this thing in the face. I am hoping all the stuff listed below will fix this thing.
I went to the parts store today and order all sorts of new goodies. I ordered a new head gasket, and everything required to change it, new timing belt and all associated gaskets and what not, and all the stuff to do the thermostat. I feel like I am so close to just rebuilding this thing. I am ready for her to run right. I have another question for y'all, I am going this far into it, should I just go ahead and pull the heads, and take them to a machine shop. How much would it cost me to have a valve job and all that jazz cost me, and would it actually be benificial to go ahead and do it now, or just to much.
Anyone in the Fort Walton Beach area feel LIke joining the suck feast that will ensue this weekend and helping out with all this good jazz? If so feel free to PM me, I will let you know what the plan is. There will be cheap beer in it for anyone brave enought to help. Wallet can't afford the good stuff. Keith Stone till this whole thing is over.
I didn't say rip your engine apart to find out! This might fix your issue because it sounds like it might be a HG but it might not. You certainly can't make it any worse at this point though since it's hardly drivable. It's generally best to confirm an issue before working on it.That being said, search the forums on how to get the idle pulley and other components off. Some of those are installed at 120-250 lbs of torque... so they can be difficult to take off! You'll find some tips if you dig around a bit.
Also, while you are in there, I highly recommend adjusting your valves as well. This WILL improve performance since it makes sure each cylinder has the correct amount of air flowing in and out. Toyota recommends ever 90k miles. This is done by replacing or swapping the "shims", metal disks of varying sizes. Just be sure to check and double-check every measurement, it's a very exact science to get it right.
02-27-2013, 05:14 PM
#22
Registered User
Thread Starter
Join Date: Feb 2013
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
I didn't say rip your engine apart to find out! This might fix your issue because it sounds like it might be a HG but it might not. You certainly can't make it any worse at this point though since it's hardly drivable. It's generally best to confirm an issue before working on it.That being said, search the forums on how to get the idle pulley and other components off. Some of those are installed at 120-250 lbs of torque... so they can be difficult to take off! You'll find some tips if you dig around a bit.
Also, while you are in there, I highly recommend adjusting your valves as well. This WILL improve performance since it makes sure each cylinder has the correct amount of air flowing in and out. Toyota recommends ever 90k miles. This is done by replacing or swapping the "shims", metal disks of varying sizes. Just be sure to check and double-check every measurement, it's a very exact science to get it right.
I don't know if I agree with the head gasket being bad. I am going to assume that had I blown the head gasket, when I drained the oil, after driving the truck for about 80 miles, I would have seen some sort milkiness to it. I didn't see that. I have a strong feeling that there is going to be a ton of vacuum leaks some where or that some sensor is going bad. Could be wrong, but I am going at this whole thing kind of backwards.
I have high hope and expectation to have Fran, that is what I named her cross fitters should get it, up and running this weekend. If all goes well, maybe even in time to take the lady friend wheeling Sunday.
02-28-2013, 09:58 AM
#23
Registered User
That's a good attitude to have. At the very least, you now have a good knowledge of the make-up of a motor. And at least now you KNOW that the HG isn't going to fail anytime soon. Not that it necessarily would have but now you have the peace of mind.
I don't know of any sensor that would completely kill the power like in your case. If you have a vacuum leak that large, it would be very noticeable. I had several when I bought my truck and it actually gained power due to extra air flow, got slower when I fixed 'em!
If you're looking for sensors to check, grab a multimeter and check the ECT located on the water bypass behind the engine, the TPS on the throttle body, and check your VAFM to make sure it's measuring air intake correctly. You can find the specs on the link to the '93 service manual. These would be the most likely sensors to cause a power loss.
You can also double check your vacuum hoses are connected correctly here: http://personal.utulsa.edu/~nathan-b...74layoutan.pdf. They could be all mixed up and causing backpressure in the engine.
Also, search the forums for similar issues. You might find someone with an answer.
I don't know of any sensor that would completely kill the power like in your case. If you have a vacuum leak that large, it would be very noticeable. I had several when I bought my truck and it actually gained power due to extra air flow, got slower when I fixed 'em!
If you're looking for sensors to check, grab a multimeter and check the ECT located on the water bypass behind the engine, the TPS on the throttle body, and check your VAFM to make sure it's measuring air intake correctly. You can find the specs on the link to the '93 service manual. These would be the most likely sensors to cause a power loss.
You can also double check your vacuum hoses are connected correctly here: http://personal.utulsa.edu/~nathan-b...74layoutan.pdf. They could be all mixed up and causing backpressure in the engine.
Also, search the forums for similar issues. You might find someone with an answer.
02-28-2013, 01:16 PM
#25
Sounds to me like a fuel pump issue. I'd check to see what your fuel pressure is on the fuel rail. IMO your either getting to much or not enough. If your getting to much pressure then its the pressure regulator not enough would be fuel pump. Check those out and let us know something. I'd almost bet that's the problem. My moms 95 3.0 truck done this exact thing and it ended up being fuel pump.
03-03-2013, 06:05 AM
#26
Registered User
Thread Starter
Join Date: Feb 2013
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
Fuel tank is being dropped. I am going to actually have a helper today, should be nice. I will post pictures and the outcome both here and my build. Keep your fingers crossed yotatech, side question, do I have to prime the pump if I change it or are the pretty much self priming
03-03-2013, 07:54 AM
#28
Registered User
Join Date: Jan 2013
Location: Bellevue, Nebraska
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
My 89 runner had a loss of power a month ago, was driving me nuts, but it turned out to be the muffler. Don't know if that's been said, but once I Had a new one put on solves my problem.
03-03-2013, 02:32 PM
#29
Registered User
Thread Starter
Join Date: Feb 2013
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
I would be very sad if that was the case. I have a few small holes in mine, what exactly was wrong with yours.
On a side note, I now need to acquire a fuel pump sending unit. I was trying to removed mine, and ended up bending the out let line. There is nothing that seems to go according to plan with this damn truck. I did however get to drop the tank. The inside of that was nasty as all get out. feeling pretty confident that that may be the case.
On a side note, I now need to acquire a fuel pump sending unit. I was trying to removed mine, and ended up bending the out let line. There is nothing that seems to go according to plan with this damn truck. I did however get to drop the tank. The inside of that was nasty as all get out. feeling pretty confident that that may be the case.
03-03-2013, 02:40 PM
#31
Registered User
Join Date: Jan 2013
Location: Bellevue, Nebraska
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
That was it, just a bad muffler, apperntly it needs that backpressure. 2-3 gear I had to use for going up even slight inclines that before I could do easily in 4 or 5 , keep in mind I have a 22re.
03-03-2013, 02:46 PM
#32
Registered User
Join Date: Jan 2011
Location: North Carolina
Posts: 365
Likes: 0
Received 0 Likes
on
0 Posts
new tank, pump, and try to clean the lines. hope it turns out well! i know how you feel about everything going wrong. youll be happy you did it when it's running well though.
Last edited by yodafan93; 03-03-2013 at 02:48 PM.
03-03-2013, 03:57 PM
#37
If you really wanna replace it make me a offer I will sell ya one. It doesn't matter. I will tell ya mine have a little rust on them due to setting for awhile.
03-03-2013, 04:54 PM
#38
Registered User
Thread Starter
Join Date: Feb 2013
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
I am gonna look into that!!! A 90 degree compression fitting and I should be good!!!!
I broke the output on top of the hangar itself, I figure I cut it and add a small section of flared tube out and I should be good.
I broke the output on top of the hangar itself, I figure I cut it and add a small section of flared tube out and I should be good.
Last edited by jtderoo; 03-03-2013 at 05:37 PM.
Thread
Thread Starter
Forum
Replies
Last Post
Tacoma1313
95.5-2004 Tacomas & 96-2002 4Runners
2
08-17-2015 05:44 PM
