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#1
06-18-2006, 10:01 PM
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86 Caprice 4.3 TBI, starts then dies?
The 86 has been running since Nov. of 2005 when it got a new battery, fuel pump, filter and catalytic converter and 114,000 miles. I have around 5000 miles on it since sitting for 2 years in my grandfathers garage. New plugs were installed 750 miles ago with no problems.
Problem: Last Monday the car would start in the morning (summer 55 degrees) then die. After 3 or 4 starts it took off for a 70 mile round trip to work. Tuesday morning the same thing but worse, the car actually died on the road about half mile for the house after 3 or 4 re-starts. Wednesday, the car would not stay running. It would immediately die after start. It was towed to the shop, where it got a new distributor, rotor, and module. I picked it up at 5 p.m. and drove around 40 miles with no problems. Thursday, would start and then die. After 4 or 5 re-starts I drove it to work 30 miles. At lunch, it started and died 4 times and then ran and drove it around town with no more problems. Going home, it ran after 4 re-starts and I drove home 30 miles. We checked the throttle position sensor and cleaned it. Today, after setting for 3 days it will start and die. I removed the vacuum from the EGR and still same. So, in short it has new: fuel pump, catalytic converter, fuel filter, spark plugs, air filter, PVC, breather filter, distributor cap, rotor, and module (u-shape in distributor) and 114,000 miles. Any thoughts on why it will not start and stay running until warm? 
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#2
06-19-2006, 12:04 AM
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Re: 86 Caprice 4.3 TBI, starts then dies?
Im not a mechanic. But I would think there might be a huge vaccum leak, or some leak from a gasket/seal and when it heats up it may expand to stop the leak enough for the engine to run.
Idk really, thats my guess.
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#3
06-19-2006, 02:25 AM
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Re: 86 Caprice 4.3 TBI, starts then dies?
I had a problem similar to that in my current car a couple of years ago. It was the carburetor (the M/C solenoid was shot, the air bleeds were plugged, the float sunk, gaskets were shot). I rebuilt it, replacing the float and M/C solenoid and problem solved.
Nevermind, you have the TBI - I suppose I should read before I reply next time... LOL... Check the injectors and make sure there are no vacuum leaks anywhere (check the manifold-to-throttle body gasket and the IAC solenoid, as well as all hoses big and small).
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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#4
06-25-2006, 01:07 PM
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Re: 86 Caprice 4.3 TBI, starts then dies?
Root Cause was the fuel pump? I took the car to a friend-of-a-friend that owns a repair garage. The fuel pump was replaced and the car is on the road again. I can only assume that the fuel pump in Nov. 2005 was bad, or that I was ripped off for a part that was not installed! Thanks for the post, and I enjoy reading the Caprice forum.
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#5
06-25-2006, 06:33 PM
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Re: 86 Caprice 4.3 TBI, starts then dies?
Quote:
Yeah, this forum has A LOT of useful info, and some very smart people here. Keep that car alive brother!
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