Bought a '85 T-type, help me spend my money!

[baby6]

25 psi? did i miss something? i hope not...no....NO!!!

 

[Wahoo]

223* on a 75* day.......just driving around.....AFTER repeatedly hitting 25psi on a hot air with no alky or E-85....?? Smells like a more serious problem.....time for a coolant level check, compression check, plug check......possible "stretched" head gasket or worse...??

I checked coolant level and it was fine. Oil looks clean too, maybe the exhaust is restrictive?

 

[Wahoo]

I should check the plugs, what do people reccommend?

 

[turbonut85]

Restricted exhaust would have the opposite effect....boost would be limited to a low amount. The car should not run that hot on such a cool day. There is a problem that needs to be found. Plugged radiator, stuck t stat, bad water pump, something. Just for laughs, I'd still do a compression test while you're checking the plugs.

 

[Wahoo]

Plugged cat?

Doesn't feel slow or fast but not abnormally slow.

 

[turbonut85]

If the cat was plugged, you wouldn't be able to get the boost above 12-15 psi at all. The cooling system has an issue causing the high coolant temps. The exhaust has nothing to do with the engine running hot. You need to figure out why it's running so hot before anything....and stop boosting the car until you get the engine temp under control. If you keep bouncing the car off 20+ pounds of boost...youre gonna pop a headgasket(best case scenario) or drive over the crank...) Next step would be to reroute all the vac lines according to the vac line diagram on the shroud...(if your emissions sticker is missing, someone can post a pic of theirs...or I will when I get home tonight.) after all this...and along with a new wastegate actuator...you should be able to get the boost under control and then be able to figure out how the car reacts.

 

[Wahoo]

Maybe the t stat is bad and is not opening fully. Can I just remove the t stat? It's on the intake id imagine?

 

[Wahoo]

Installed the f-body radiator today, went smoothly. Coolant hoses and tranny lines connected fairly easily. It's high 70's today, cars running consistantly at 176-189 degrees now so its working a lot better!

My check engine light is on for code 13 bad or slow reacting O2 sensor. I think this happened from me being stupid increasing fuel pressure without a fuel pressure gauge.... Stupid 4an fittings that aren't at my local parts stores!

I just want to confirm, turning the Allen key lefty will decrease fuel pressure, and turning it righty will increase?


My car is running pig reach now making black smoke if I give 1/4 or more throttle. The Int and blm say 150

I don't know if this is from my fuel pressure or would a bad O2 sensor do this?

The CC was almost stuck on the same number for awhile then it started to go up slowly from 4-10 counts and then finally by 30-40.

I hope I can save the o2 sensor by decreasing fuel.

 

[turbonut85]

Make sure the o2 sensor is plugged in. I'd swap back to the stock fuel pressure regulator until you get a fuel pressure gauge installed. Reset the ecm (unplug the orange connector on the positive bat cable) Then see where the BLM is.

 

[Wahoo]

Make sure the o2 sensor is plugged in. I'd swap back to the stock fuel pressure regulator until you get a fuel pressure gauge installed. Reset the ecm (unplug the orange connector on the positive bat cable) Then see where the BLM is.

I had a spare o2 in the trunk, so I removed the old one which was black, and installed the new one, I backed the Allen key on the adj fuel regulator out 1.5 turns, reset the ECM and the o2 code was gone and the int was 128ish and blm 130ish at idle. Just gonna let it sit until I can get the 4an fitting to female 1/8 to check the fuel pressure.

At least the car runs a heck of a lot cooler, safe to say nothing wrong with it running at 180ish? Still stock clutch fan.

 

[Wahoo]

Think I can use brake clean and clean the old o2 so it will work again?

 

[turbonut85]

A new o2 sensor is only $20....I wouldn't even mess with one that has been fouled. Not worth the risk. BLM at 130 isn't too bad...so long as it stays there...

 

[Wahoo]

We'll since I believe I turned the fuel pressure down but don't have a good way to tell its gonna be parked until I can get my gauge on the fuel rail to check.

Thanks for all the help, these cars nickel and dime ya for sure lol

 

[turbonut85]

Nickel and dime is an understatement....lol. Good plan on the fuel pressure. Did you check all the vac line routing?

 

[Wahoo]

Nickel and dime is an understatement....lol. Good plan on the fuel pressure. Did you check all the vac line routing?

I checked most of them, how would you put a zip tie on the line that goes under the turbo? Or even the one on the back of the intake behind the turbo?

I replaced a lot of important lines, and made sure the map sensor gets pressure from the manifold and the fuel pressure regulator also gets it from the manifold. Any lines that seemed loose I replaced.

 

[turbonut85]

1st step(s) of working on a hot air:
1. Remove fan shroud (upper and lower)
2. Remove clutch fan
3. Get stool
4. Climb said stool and get into the engine bay using the steering box as a step and the coil pack as a balance point to get in.
5. Perform work (after climbing in and out several times to get the tools you need)

 

[usetaboost]

Sounds like too much work

 

[turbonut85]

You can eliminate steps 1&2 if you convert to dual electric fans....

 

[baby6]

Step 6, pull out Hotair motor and convert to Intercooled.

 

[turbonut85]

Step 6, pull out Hotair motor and convert to Intercooled.

Only if you're a quitter.....