1986 Chevy Celebrity Celebrity Shakes and hesitates when Ga

Tiny
EARTHSCIENTIST
  • MEMBER
  • 1986 CHEVROLET CELEBRITY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 121,000 MILES
Greetings,
I bought a 1986 Chevy Celebrity and it has some sort of firing problem when the gas pedal is pressed. The car will shake and jerk and if I hit the gas hard it will eventually speed up and stop jerking for a little while. We have checked the timing and the cold temperature sensor(?) That regulates the amount of gas given by the fuel injector at cold temps(is what I was told). The question is, do you have any suggestions as to what it may be? I am trying to make a cheap fix since the economic collapse has left me with far less income, but I fear that if I bring it to somewhere then I will be ripped off because I dont know what it is. Also, I live in Fairbanks, AK and as you may imagine it gets very cold here and wasnt sure if knowing that would aid in diagnosis. MANY THANKS IN ADVANCE! You will save me for this coming and brutal winter here! :)
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Monday, October 4th, 2010 AT 3:28 PM

4 Replies

Tiny
JDL
  • EXPERT
Any applicable trouble codes? Use a gage and check fuel pressure. How long since a tune-up?
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Monday, October 4th, 2010 AT 3:32 PM
Tiny
EARTHSCIENTIST
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Not sure how long since the last tune up. I brought it to a place here that checked the timing on it and said that was now functioning correctly. I dont have a computer to check the error codes and have not checked the fuel pressure. Is there a device I should purchase to check the fuel pressure. Any suggestions would be a HUGE help! Thanks for your reply!

Best wishes from Fairbanks!
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Monday, October 4th, 2010 AT 3:36 PM
Tiny
JDL
  • EXPERT
Some of the national brand autostores used to loan out a fuel pressure gage. With TBI fuel system use a TBI fuel pressure gage. You will have to tee into the supply line with tbi. If it is easier to tee in under the hood, that's fine, sometimes I tee in at the fuel filter. Just make sure there is no pressure on the system before taking any lines loose.

As far as the mil codes, find the data link connector, lower edge of dash, driverside. Is that a 12 pin connector? If so, use a jumper wire between terminals A & B at the connector, turn the key just till the dash lites come on, no crank. The mil starts flashing, you count the flashes to get the codes. Your looking for two digit codes. Don't let the connector on the left confuse you, two different connectors are shown as possibilities.


http://www.2carpros.com/forum/automotive_pictures/170934_celebrity_data_link_connector_1.jpg

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Monday, October 4th, 2010 AT 4:04 PM
Tiny
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  • MEMBER
Many thanks to you for your reply! I am going to do what you have suggested here and see if I can isolate the problem. I really appreciate your time!

THANKS!
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Monday, October 4th, 2010 AT 4:08 PM

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