Hello my name is Jason. I've owned my '92 TY for about 4 years and it has recently been giving me trouble. It has about 107000 miles and has developed a hesitation and likes to "hunt" while it is sitting and idleing. It also will sometimes just about die out when I try to accelerate. I am pretty mechanically inclined but the workings of the trucks is still a bit of a mystery to me. I would like to build another motor for it but I want to be sure the problem is corrected now before I start that project. I have tried advancing the timing a few and it ran great but I could only run 10 lbs of boost so it wouldn't knock. I have a intake, ATR street chip, and a cat back 3" exhaust with a Flowwmaster 2 chamber muffler. Can anyone help with some diagnostic tips. Thanx
New guy
- Thread starter Ty1173
- Start date
Welcome to the site.
Where to begin...
Ignition.
Ignition.
Ignition.
http://syty.net/faq.php
http://syty.net/new_faq.php
These will be a good place to start.
Hunting - I would also put money on a vaccuum leak somewhere.
Where to begin...
Ignition.
Ignition.
Ignition.
http://syty.net/faq.php
http://syty.net/new_faq.php
These will be a good place to start.
Hunting - I would also put money on a vaccuum leak somewhere.
Syclone#1992
SyTy.net Moderator
Re: New guy
Get rid of the ATR Chip and go back to stock too.
Ty1173 said:
Get rid of the ATR Chip and go back to stock too.
I checked ignition. Timing is at zero. Plugs and wires are good. No vacum leaks. Still having trouble with high boost. Anything over 10 lbs the truck shutters and surges. I've checked for codes and nothing. If I gradually apply throttle and bring boost slowly it usually is ok. If I mash the throttle I get severe knock and then heavy knock retard. I ran the truck on datamaster this weekend and need some guidence on definition and values of the readouts. I'm not sure what some of the things are and what the readings should be for a SYTY. thanx
TY1173 :banghead:
TY1173 :banghead:
TurboManiacal
Donating Member
Ty1173 said:
Just because you visually check the plugs does not make them "good". I'd go ahead and replace them to be safe. I will say though...to me your problem sounds like a fuel pump.
Tooky
Serious about performance
Something is horribly wrong. Don't floor your truck anymore until you find a cause. Your motor will blow in real short order operating under conditions like this. Do you have the correct MAP sensor for your chip? What fuel pump do you have? Has the fuel filter ever been changed? What are your MAT temperatures on Datamaster? Email me the file: tookycat@nconnect.netTy1173 said:
What spark plugs are you using? Hopefully they are one of these, in order of preference from best to decent: NGK UR6, NGK UR5, Autolite #23, ACDelco CR42TS.
TurboManiacal
Donating Member
TookyCat said:
You're just cruis'in for a bruis'in with that statement.
TookyCat said:
Yeah I know I was just sparatically punching it to see what different scenerios would have what results. I have the stock MAP w/ an ATR pit bull chip. Stock fuel pump and regulator, new fuel filter. The plugs are UR5's w/ Accel xtreme 9000 wires, Accel cap/rotor. Once I'm back to work I'll be getting new plugs, wires, and conrad cap/rotor. Wires & plugs I'm not sure about(brand). My MAT temps were 120 ish w/ O or- boost. Under boost around 93-94 degrees. I'm still waiting for the file from the tests. As far as the chip goes I've been running the ATR for about 3 years and have had no trouble before. So I beleive the problem is elsewhere.
TY1173 ::thumbsup::
92 black typhoon said:
The 'sensor' in the cche is just a coolant level sensor, not much of a sensor at all. It doesn't measure temperature, just a yes/no if coolant is present, and doesn't even work in the factory configuration.
The manifold air temp sensor is on the driver's side of the upper intake, measuring incoming air through the manifold.
just some clarification.
Will_in_China
Truckless Wonder
Sadly, these all sound possible.
Time for the old "Spring Cleaning" in my book, just to be safe.
I would do these, especially if they are factory:
Fuel Pump
IC Pump
I would check these if you just did them, replace otherwise.
I err on the side of just fuckin' replacing them and not ask questions.
Vacuum lines
Fuel Filter
Plugs
Wires
Cap
Rotor
Got an AFPR?
Glad to see you have a scantool!!!!
Post a link to the datamaster file somewhere public for the most help...
-Will
Time for the old "Spring Cleaning" in my book, just to be safe.
I would do these, especially if they are factory:
Fuel Pump
IC Pump
I would check these if you just did them, replace otherwise.
I err on the side of just fuckin' replacing them and not ask questions.
Vacuum lines
Fuel Filter
Plugs
Wires
Cap
Rotor
Got an AFPR?
Glad to see you have a scantool!!!!
Post a link to the datamaster file somewhere public for the most help...
-Will
TurboManiacal
Donating Member
TookyCat said:
Based on your tone...I'd assume 23's...I also know he ran on L35's.
http://www.syty.net/phpBB2/viewtopic.php?t=21515&highlight=mark+larson
So all things are not equal.
My fuel pump is still stock, just replaced the IC pump and ran new rubber lines. Plugs, wires, cap/rotor are coming. I also will check my fuel pressure, and vacum w/ a tester. I had a vacum line come loose the otherday and threw alot of codes. Once I found the leak and cleared the ECM it didn't throw anymore codes. What should the base fuel pressure be?? I've got a stock truck except the ATR pit bull chip. I know what to check for otherwise, it's just obtaining the tools I need to do it. What is an AFPR, I'm still new to some of this stuff.
TY1173 :banghead: :banghead:
TY1173 :banghead: :banghead: