Engine stalling - need help

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CarGuru > Open discussion > Engine stalling - need help 28 February 2006 13:24:19

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Engine stalling - need help
Blackcherryfiero 5 April 2005 06:06:18
	I have a 1985 Pontiac Fiero 2.8l V6. Completely restored including rebuilt engine - stock. Just recently the car started stalling while driving it. It seems to happen only while the engine is hot and never at an idle. I can make it happen consistently by warming up the engine, then rev the engine to about 2500 RPM and wait about 1-2 mins. The tach then drops instantly to 0 RPM. When this happens while driving, sometimes the engine will start again on it's own.. sometimes I need to throw in the clutch and shut off the key, and restart the engine. Any ideas?
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Pegasus #4 5 April 2005 08:51:59 [ permanent link ]
	I've included a recent posting from JazzMan that seems to fit your situation. "Get a short length of wire and some connectors from Radio Shack and make a jumper to fit from the orange cigarette lighter power wire to the fuel pump terminal in the ALDL behind the cigarette lighter trim plate: http://web2.airmail.net/jsavage1/formula/aldlfuelpumpbypass.jpg Next time it quits connect the wire as described above and see if the fuel pump works. If it does then there's a problem with either the relay or wiring from the ECM to the relay. Also, check that you actually have spark because the ECM will not activate the pump unless it sees pulses from the distributor module and if the module quits (the tachometer lays dead while cranking) then you need a new module." JazzMan "blackcherryfiero" <bir0012@hotmail.com> wrote in message news:e0e0daacfc53d1fccfe07b10476c76a1@localhost.talkaboutautos.com...> I have a 1985 Pontiac Fiero 2.8l V6. Completely restored including rebuilt> engine - stock.> Just recently the car started stalling while driving it. It seems to> happen only while the engine is hot and never at an idle. I can make it> happen consistently by warming up the engine, then rev the engine to about> 2500 RPM and wait about 1-2 mins. The tach then drops instantly to 0 RPM.> When this happens while driving, sometimes the engine will start again on> it's own.. sometimes I need to throw in the clutch and shut off the key,> and restart the engine. Any ideas?>
		Add comment


JazzMan 5 April 2005 09:01:37 [ permanent link ]
	blackcherryfiero wrote:> I have a 1985 Pontiac Fiero 2.8l V6. Completely restored including rebuilt> engine - stock.> Just recently the car started stalling while driving it. It seems to> happen only while the engine is hot and never at an idle. I can make it> happen consistently by warming up the engine, then rev the engine to about> 2500 RPM and wait about 1-2 mins. The tach then drops instantly to 0 RPM.> When this happens while driving, sometimes the engine will start again on> it's own.. sometimes I need to throw in the clutch and shut off the key,> and restart the engine. Any ideas? Does it ever, while cranking, show the tach on zero while the engine is cranking but not starting? If so, it's a bad module, pickup, or coil. Have you checked to see if there are any stored codes? JazzMan -- ******************************************************** Please reply to jsavage"at"airmail.net. Curse those darned bulk e-mailers! ****************************************************** "Rats and roaches live by competition under the laws of supply and demand. It is the privilege of human beings to live under the laws of justice and mercy." - Wendell Berry ********************************************************
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David S. 6 April 2005 05:40:12 [ permanent link ]
	I found that corrosion at the screw that holds the ignition module would cause this problem. Even if it is all new, the screw might be loose. It forms the ground path. It's probably time for me to check this again. My V6 would drop dead on the highway, then restart with no problem on the side of the road. Other than that, you are probably looking for an electrical connection that goes open when it gets hot and serves the entire iginition system - module, coil, wire from the coil to the distributor, any connection. Maybe a bad temp signal to the ECM? I don't know if the ECM shuts off spark when too hot. It's tough to diagnose until it really croaks. Dave S. JazzMan wrote:> blackcherryfiero wrote:> > I have a 1985 Pontiac Fiero 2.8l V6. Completely restored including rebuilt> > engine - stock.> > Just recently the car started stalling while driving it. It seems to> > happen only while the engine is hot and never at an idle. I can make it> > happen consistently by warming up the engine, then rev the engine to about> > 2500 RPM and wait about 1-2 mins. The tach then drops instantly to 0 RPM.> > When this happens while driving, sometimes the engine will start again on> > it's own.. sometimes I need to throw in the clutch and shut off the key,> > and restart the engine. Any ideas?> Does it ever, while cranking, show the tach on zero while> the engine is cranking but not starting? If so, it's a bad> module, pickup, or coil. Have you checked to see if there> are any stored codes?> JazzMan> --> ********************************************************> Please reply to jsavage"at"airmail.net.> Curse those darned bulk e-mailers!> ******************************************************> "Rats and roaches live by competition under the laws of> supply and demand. It is the privilege of human beings to> live under the laws of justice and mercy." - Wendell Berry> ********************************************************
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Guest 28 February 2006 13:24:19 [ permanent link ]
	i have a peugeot 307,while on acceration of the pedal,i noticed slugish take off of the engine,i.e on acceleration the car does not move but on removal of my legs fron the pedal,the car takes off.i have used the peugeot dianostic equipment diag2000,to find the fault and the result was no fault found!Any idea?
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CarGuru > Open discussion > Engine stalling - need help 28 February 2006 13:24:19

	see also: Re: PLEASE PUT ME ON YOUR EMAIL LIST Re: noise while shifting gear from P to…		pass tests:		see also: fuse digram Locked out of 1998 Ford Contour 1988 ford f-250

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Engine stalling - need help

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