1986 Oldsmobile Ciera doesn' run right

DENIS G. FOYTE

MEMBER
1986 OLDSMOBILE CIERA
4 CYL
FWD
AUTOMATIC
120,890 MILES

My old olds is a great car and in great shape but it has started to not run! When cold it starts great will drive untill warm then if you slow down to a stop engine will die, then is hard to start have to hold gas down like flooded but when it starts it will back fire and kick back against the starter if you get it started it won't pull its self is only running on two I think but back fires and dies if let idel. Let it set for 4 hrs will start and run great untill you slow down then the same thing. Won't start but back fires agains starter and if started runs on only 2 I think. Help I love the old thing. Denis

Monday, March 30th, 2009 AT 8:45 AM

2 Replies

JDL

MECHANIC
16,098 POSTS

Hello, how long since a tune-up? Any codes? How is the fuel pressure? I sometimes use a digital multimeter as an inductive clamp on a plug-wire, just to see if there is voltage on the wire. You don't penetrate the insulation or take the plug wire loose, the reading is inductive. I can't say it will work on every application, but, so far it works for me. If the reading on several plug wires show around 1/2 volt, and 1 or 2 show zero, I know where to start testing. That doesn't mean the plugs are firing just that there is voltage on the plug wire.

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Monday, March 30th, 2009 AT 9:33 AM

DENIS G. FOYTE

MEMBER
2 POSTS

Thank You for the answer it doesn't help me much I live 35 miles from the closest shop up in nothern Minnesota. The car was tuned up about 18000 miles ago. The tests you sugested mingt be great but I have no equipment to do the testing If I had I probley would not have asked the question, I thought maybe you could give me a idea coil, egr. Ingetion pick up or something like that, I understand it is hard to do over a comupter, but thank you for trying Denis

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Monday, March 30th, 2009 AT 2:30 PM