95 G20 Van Runs Like Crap When Hot

[tardis454]

I'm glad he got it too, it was a learning experience for both of us..

[MR P-BODY]

Temp sensor, $11

Says it runs like a champ.

Like I said... seen it many times and its a cheap fix(unless you
throw all sorts of parts at it until you change the temp sensor...
oh well... glad you got it

[anotheridiot]

I knew this too. Dammit, as many problems as that causes with fuel regulation I swear its gonna be the first thing I change every time.

[TheSilverBuick]

Doh!

[tardis454]

Sorta, but not before he added a fuel pump, tune-up, chopped the cat off...

[TheSilverBuick]

Yay, closure, cheap closure.

[tardis454]

Temp sensor, $11

Says it runs like a champ.

[SpiderGearsMan]

My friend has a 95 G20 van w/350. He tells me it fires up & runs OK when it's cold, but once it's warmed up it falls on it's face & stalls when you hit the gas & you have to floor board the gas pedal to get it to restart. He changed plugs, wires, ignition module, put a 'known good' throttle body & new gasket on it & it still does the same thing.

Ideas? Spidey you there???

start with a fuel filter
check fuel pressure . look for tbi fuel pressure regulator ..9=12 psi ..check for leaks and of course ..CHECK THE COIL tower for chalky residue corrosion ..coils go a lot
pickup coil in distributor

[tardis454]

He cut the converter off, it's fine.. Changed his fuel pump, still same shit.
He's thinking ECM, I don't know.. I'll tell him about the temp sensor..

[AFFORDILLAC]

I had the same van, same symtoms...temp sensor.

[Bamfster]

Yea .... we need to know what the final outcome of this was ....

[MR P-BODY]

I would think its the temp sensor... it controls how fat the injector
is ... when its cold its saying your on the choke and when warm it
says to lean down... seen it many times

[Mr4Speed]

I've seen the guy at the muffler shop test cats by blowing a little hole in the pipe with the torch both in front of and behind the cat to check the pressure differential.

[Jimbo17]

With the motor running and your hand over the exhaust do you feel anything coming out?

I would remove the cat and try that first. One other thought would be to put one or two cans of dry gas into the tank also.

You might have just got some water the last time to purchased the gas.

Jimbo

[Bamfster]

Yup 95 is still OBD1 ...... Good call on the temp sensors, they can be checked w/an ohm meter.