86 Park Avenue *problem fixed* see post 5


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86 Park Avenue *problem fixed* see post 5

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

bigiron
Novice

Nov 24, 2006, 3:31 PM

Post #1 of 5 (1383 views)

*86 Park Avenue problem fixed* see post 5**	Sign In

I have a 1986 buick park avenue with the 3.8V6 that stopped runing while in park after a 30 minute trip and will not start, this car has 105,900 miles. There is spark that jumps from the plug wire to the top of coil terminal. The check engine light shows a repetative I-II I-II flashing sequence with no other diagnostic information. To check for fuel problem I sprayed starting fluid into the system...which did not help.
Any assistance would be greatly appreciated.

(This post was edited by bigiron on Jan 28, 2007, 9:15 PM)

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 24, 2006, 8:53 PM

Post #2 of 5 (1376 views)

Re: 86 Park Avenue will not start	Sign In

Now check for spark at the plugs. I think you have a coil pack system and the coil towers can go nuts. Also think that that code just means the computer is working but not sure on that -- don't have the info near me right now, T

bigiron
Novice

Nov 25, 2006, 1:33 PM

Post #3 of 5 (1369 views)

Re: 86 Park Avenue will not start	Sign In

Dear Tom,

thx, for the quick reply!

yes, there is spark across the plugs. yes this 3800 has the coil pack system.

sincerely,
Dave

steve01832
Veteran
steve01832 profile image

Nov 26, 2006, 2:53 AM

Post #4 of 5 (1361 views)

Re: 86 Park Avenue will not start	Sign In

Next we have to check fuel pressure with a guage (32-37 psi is normal), and we have to check injector pulse. If these check out o.k then it's time to do a compression test. The older model 3.8l had a lot of timing chain and gear problems.

Steve

bigiron
Novice

Jan 28, 2007, 6:53 PM

Post #5 of 5 (1326 views)

Re: 86 Park Avenue problem solved...	Sign In

A worn out plastic timming gear on 86 Buick Park Avenue
Problem was repaired with new metal timming gear.

Replaced timming chain with a new one, while there.

Car runs like a new one! Thanks Carjunky for your assistance.

Sincerely,

bigiron/Dave

(This post was edited by bigiron on Jan 28, 2007, 9:10 PM)

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