My mk3 and its problems

ForcedTorque

ForcedTorque

Join the 92 Owners Group
Jul 11, 2005
6,099
2
38
58
Satsuma, Alabama, United States
starscream5000 said:
No, you don't need to "shut up", just try not to scare a new person on here with the first words coming out of your digital mouth to him being "it's a BHG". I know that's not exactly what you said, but if I where a new member on here seeking help and someone with a high post count says, "white smoke=BHG" then I would most likely assume that he/she is right. Then I would start researching the next steps to take to cure this BHG. It's very common get white smoke and bluish smoke confused between each other. An easier way to tell them apart would be to smell them.

Sorry if there was any hard feelings ;).
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No hard feelings Starscream.

The OP seemed to be very new to the Supra scene, and made his own diagnosis. The first few responses to the thread seemed to be jumping on to that and not thinking outside of that box. I was just throwing out another suggestion. I do my best to help when I can, but I try not to post anything that I'm not sure of. I don't like to post bad information, so that those who search later don't get bad info either.

Now it DOES seem that you may have told the wrong person to STFU. I admire the way you will help, no matter how often you post!
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
got the codes

my car gave these numbers: 22313451 in that order. I assume it's 4 different codes...
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
Well, Let me go clear the codes and check again. I knew the #34 turbo pressure would be off, because its pushing less boost than it is supposed to due directly to a bad turbo which I am aware of.

The 22 may be because of a leak in the coolant somewhere. I haven't found that yet, but I have noticed that my radiator isn't keeping the coolant. I do occasionally see some steaming out of the overflow valve on the radiator reservoir. I've been keeping up with that pretty close. It isn't overheating... Not until it runs out of coolant, which would take a couple days with normal driving, and I check it more often than that so it doesn't happen.

I have no clue why the 31 or 51 is in there at all, and I'd like a little input on what that could be. Come to think of it, there are a couple small hiccups here and there that might be caused by one of these.

Dad used a piece of copper pipe to couple the hoses and completely bypass the water valve assembly. I won't have a heater, but with the temperatures in the high 90s and me having a targa top, it wont be needed for a little while, we'll fix it when I find a replacement water valve assembly off of a parts car.

I drove it today so I have access to it. It ran pretty good all things considering. Oil pressure is at about 20psi at 2000rpms. The white smoke was abundant but mostly on lower RPMs and the exhaust had almost no white smoke in it after it warmed up.

And I didn't get a chance to get back out and work on it tonight. I'm going to have to check it again tomorrow.
 
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starscream5000

starscream5000

Senior VIP Member
Aug 23, 2006
6,359
0
36
Hot and Humid, KY
ForcedTorque said:
No hard feelings Starscream.
Now it DOES seem that you may have told the wrong person to STFU. I admire the way you will help, no matter how often you post!
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Maybe I should have added the ";)" into the first sentence of that post. The tone of voice or character of if can be hard to decifer on the internet with those emoticons, sorry :).

To the OP. You will typically want to resolve the issues of your codes in numerical order, but in this case you may want to take care of the code 51 as that's what most likely cutting off your performance right now.
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
starscream5000 said:
Maybe I should have added the ";)" into the first sentence of that post. The tone of voice or character of if can be hard to decifer on the internet with those emoticons, sorry :).

To the OP. You will typically want to resolve the issues of your codes in numerical order, but in this case you may want to take care of the code 51 as that's what most likely cutting off your performance right now.
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Well, like I said, I don't have a clue what may be causing it. Any suggestions?
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
Alright. I'm going to look into it. I drove it to work today (~5 minutes from home) and I remembered the little hiccups that I was talking about.

It ALWAYS takes two tries to start the car. It turns over just fine the first time, but won't ignite. Sometimes it takes three. It's rare that it'll start on first try. Usually only if its only been off for a minute or two. This seems to be relative to the temperature of the car.

One last thing, a while back I was going down the road and my throttle hung at about 7k. I immediately turned it off and got it off the road and opened the hood. Fooled around with things and noticed that the throttle was easy to get unhung, just open it all the way from under the hood and then let go and it all is peachy again, but it will hang if I push it so far (all done while the car is off, of course). I looked into it, it was a piece on the throttle linkage that had completely broken off. I paid $8 to toyota for it, but have yet to see it (backorder). To temporarily fix the problem, I put a hood pin ring on it that I got from Lowe's, it works just fine.
linkagecf3.jpg
 
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starscream5000

starscream5000

Senior VIP Member
Aug 23, 2006
6,359
0
36
Hot and Humid, KY
Are your VSV's hooked up properly? A fuel VSV not being hooked up may cause the starting issue you are describing due to heat soak, it's an Idea to check into. They are located underneath the intak manifold, they look like two little rectangular boxes with a port on each side for vacuum lines to go into. One's for fuel, the other's for EGR.
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
reset my codes, drove it up the street. pushed max boost once or twice, got it home/etc. Pulled new codes and I'm getting 22 and 51. Nothing more.

Also, it overheated due to human error. I got it off the road and all taken care of, but lets just say it had to do with me not tightening the clamp that clamps the hose onto the radiator. Yeah that's my fault. Anyone else think that's probably why I got the 22?

As for the 51, I'm still not sure what's up with that. Going to check that out when I get a chance to.
 
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3p141592654

3p141592654

90T
Oct 11, 2005
3,816
16
38
Thousand Oaks, CA
22 is a short or open in the coolant sensor circuit. This is why I asked if you had read the TSRM diagnostics pages. It will not be set because the car overheated.

Most likely you have a wiring problem between your sensor in the thermostat housing and the ECU. It will also cause hard starting since when 22 is set the ECU defaults to warm engine operation.
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
starscream5000 said:
Are your VSV's hooked up properly? A fuel VSV not being hooked up may cause the starting issue you are describing due to heat soak, it's an Idea to check into. They are located underneath the intak manifold, they look like two little rectangular boxes with a port on each side for vacuum lines to go into. One's for fuel, the other's for EGR.
Click to expand...

Haven't checked that yet. I'll get to that later. It's raining today, but I have a carport under which I keep my car.
 
D

deranged

1988 Turbo Supra
Jul 15, 2007
51
0
0
TN
Just tried to check the VSV's, but I can't quite get to them. What's the easiest way to get to em to make sure all's hooked up properly?
 
3p141592654

3p141592654

90T
Oct 11, 2005
3,816
16
38
Thousand Oaks, CA
Sounds like an intermittent wiring problem then. You should never see code 22, as it is a major malfunction of the sensor circuit. You will not get a code 22 from overheating.
 
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