Timming on a 95 truck

Tiny
SC1 RACING
  • MEMBER
  • 1995 CHEVROLET IMPALA
On my old truck you had to unplug the plug behind glove box or on the firewall and set timming on 0. Now on this 95 I just installed new eng/trans and get 5 differant stories on how to time the engine. Can anyone help me.

also how do you test the coil on this truck?

thank you
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Wednesday, January 11th, 2006 AT 2:33 PM

3 Replies

Tiny
JACK42
  • MEMBER
95 should be CPI. If it is you line the motor on TDC for #1 like you were installing the dist fresh. It lines up to the cap firing position, there isnt a timing adjustment, It will run pretty far off but will give a cam/crank correlation code
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Wednesday, January 11th, 2006 AT 3:09 PM
Tiny
SC1 RACING
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It is a throtle body, and ive set the timming many ways. When I set it where it runs perfect it pings constantly, and when I set it dead on 0 it wont pull a grandma on a scooter. Ive put on scanner and everything shows to be in peremeters on the computer. Only thing it showed was being lean. So I replaced knock sensor, and 02 sensor.

Currently at idle it is set at 18* and when you stomp it it drops to -2* and around town it runs good but when you get on the interstate it takes forever to gain speed, and if you give it to much gas it will hesitate and bog down. I even put the computer on trans and it showed perfect. Any suggestions? Please im lost. Ready to start a fire. :Lol:
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Thursday, January 12th, 2006 AT 11:49 AM
Tiny
SC1 RACING
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If anyone is having this problem, it is the same you have to unplug the tan/black wire spark advance. And set timing on 0. The wire runs in between the duct work, and the blower motor below the glove box. I looked for it forever untill I removed all the tape from my wiring harness. Gm hid it pretty good for me.
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Wednesday, January 18th, 2006 AT 3:31 PM

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