change in weather

[tyfoo]

its been very cold here in n.y
the typhoon has been runing very good this winter.
the idle has been smooth - without the popping
the pinging has gone away at shifts and light throttle aceleration

yesterday it was in the upper 40's
and all hell went lose
piece of shit truck
im going to run it into a tree

 

[jwaller]

Re: change in weather

the pinging has gone away at shifts and light throttle aceleration

if you hear pinging the problem you have with your truck(being able to drive it) is going to fix itself very soon.

 

[GM TURBO]

Re: change in weather

if you hear pinging the problem you have with your truck(being able to drive it) is going to fix itself very soon.

I've also read this. It is the quickest way to a better motor. The fastest way to get there is to stay in boost till the pinging turns in to a loud clunking.

 

[tyfoo]

been fighting this pinging all last summer. last fall thought it was solved
know its warm again its back notice after it shifts a gear
everythings been changed on this truck

rough engine when starting out till it hits 2nd gear or the rpms are about 1800 rpm

it's done this from day one but went away alot this winter

 

[Divergent Lightning]

You might want to try a colder spark plug, or if that doesn't work, take the intake manifold off and give it a solid cleaning. That should help bunches.

 

[fiveoh]

eventhough i dont have one myself.....Get an alky inj. kit and your pinging prob will be solved. I had the same mentality you did last may when i burnt up my number 4 piston, well about 7,000 later i dont have the same opinions on running when it pings :evil:

 

[tyfoo]

did the intake gaskets and cleaning in aug
the plugs are the ur6 whats colder then that?

 

[TYTILIDIE]

Also make sure that you are using good gas and that you have good fuel pressure. If you have a fuel pressure gauge, take your hood off and duct tape it to the master cylinder and drive and see what it does. This is how I found out my FP wasnt pushing enough, at higher RPM, it would drop down to like 20 P.S.I.. That is a problem. When I would test it sitting in the garage, it would say 38-40 P.S.I.. I had the pinging also but took care of it immediately.

Mike

 

[Baja Resident]

that quote actually sounds like a haiku for these trucks:

"and all hell went lose
piece of shit truck
im going to run it into a tree"

:rotf:

 

[dgoodhue]

Get an alky inj. kit and your pinging prob will be solved.

IMO that is band aiding the problem... Fix the problem right the first time, I forget the whole story on this truck, does it need a motor? Have you done vacuum lines & FP yet?

 

[tyfoo]

first go the truck
idle rough with popping
iratic idle jumping up and down the rpm range
over boosting
no power
stalling

what ive done so far
tune up
plugs,wires, cap rotor
all gaskets from lower intake up
pvc valves
timed it
boost switch - (black box above turbo)
injectors
adjustable fuel presure regulator
cat
and exhaust back
adjust waste gate
many plugs-(found out that overboosting would kill plugs)
o2
map
coil
iac
with copper coil under cap and roter- (not the black box with plugs)
fuel filter
upper intake cleaner(the stuff that makes the truck fart really bad)
checked vacum - (leaking around butterfly)
checked top dead center
open computer looked at the chips(no clue if its stock) the # on datamaster shows stock.


i'll take a datmaster run tonight and get out

I did up the fuel alittle today. helped alittle but lost alot of power

I do have tranny promblems
would the tranny cause any thing?

were do I start???

 

[bezerk]

you might want to check the intercooler, if you have this problem while it''s warm outside.....

your best investment is Datamaster..
untill than, keep out of boost, or else you wil getyourselve in an engine rebuild...

 

[SeattleSy#1255]

1) what does your Volts look like? Alt. may be lagging.

2) fuel pump could be going and not keeping up?

3) Explain your method of timing (how you do it)?

4) I'd verify that chip you got for sure and verify the correct MAP sensor for that chip (2bar vs. 3bar).

5) what are your IAC temps before WOT and after a WOT blast?

6) are you running a alki setup that could be wired wrong and a pulsating groud is messing things up (example: SMC alky kit)

just a few things i didn't see mentioned. :wink:

 

[tyfoo]

checked the intercooler pump
works when I jump the a.b. terminal


when the fuel pressure gage is on it bleeds down quick
its not the injectors there new
or the fpr thats new
so its something in the tank

is there a valve in the tank?

I also notice that just before a shifts the engine is boged down like in a standard tranny
it's like a would put it in 5th gear instead of 2nd
this is when I hear the detonation the most
the blm on datamaster are sometimes red then green there not staying the same

ant sugestions?

 

[tyfoo]

checked the intercooler pump
works when I jump the a.b. terminal


when the fuel pressure gage is on it bleeds down quick
its not the injectors there new
or the fpr thats new
so its something in the tank

is there a valve in the tank?

I also notice that just before a shifts the engine is boged down like in a standard tranny
it's like a would put it in 5th gear instead of 2nd
this is when I hear the detonation the most
the blm on datamaster are sometimes red then green there not staying the same

ant sugestions?