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Username Post: setting timing on '91 v6 4.3 TBI        (Topic#159942)
jiiz 
Senior Member
Posts: 186

Age: 38
Loc: Finland, Europe
Reg: 02-17-02
05-18-07 12:12 PM - Post#1167818    


Hi Guys,

I spent all day today trying to replace the distributor. That was first time replacing the dist and I managed to not the set the new one properly and started the engine. Heartbreaking noise and ignition setting gone... Finally managed to find TDC and put in the distributor with brother-in-laws's (who actually knows what he's doing). However, we didn't get the timing correct (drove it and it hardly took off from red light. When rpms got little higher felt better). There's no stickers under the hood (export model, that might be the reason), so we tried to hit 0. But if we unpluggeed this wider (with 4 connectors, I think) cable from dist, the engine died right away and wouldn't start over. If we took off the other connector with 2 wires, no start.

What needs to be done to set timing no '91 4.3 v6 manual W/T1500?

Any help appreciated, since supposed to drive to work to pay for the new dist. Thanks!!
jiiz


 
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chrisk1500 
Very Senior Member
Posts: 1817
chrisk1500
Loc: Saskatchewan, Canada
Reg: 10-30-04
05-18-07 12:28 PM - Post#1167829    
    In response to jiiz

Disconnect the timing wire....tan/black....usually in the big wire bundle on the firewall or behind the glovebox....
07.5 DMAX 2500 HD ext cab, 4x4, Edge EVO Race, 4" straight pipe, PPE tie rod sleeves, bushwhacker pocket flares, etc...

06 Escalade


 
Chevytech 
Subject Matter Expert - Senior Member
Posts: 3071

Loc: Twin Cities, Minnesota, U...
Reg: 04-25-04
05-18-07 06:21 PM - Post#1168026    
    In response to jiiz

I believe this information to be accurate for your 1991 C/K truck:

To set the timing you must unplug the set timing connector, which is a single Tan wire with a black stripe/tracer on it.

The set timing wire is located, under the hood, on the main harness that goes from the engine to the firewall, on the passenger side, underneath the black plastic cover (if it’s still there) that covers the junction block, relays & fuses. It’s near the top usually on the back side of the harness. Doing this will set a code 42 in the computer. Clear the code after you are done checking or setting the timing.
For those of you that are wondering why you are not getting replies to your thread:

Did you give the model, year, engine, fuel system type, and transmission information?

If the it has been altered from stock let us know about that too.


 
jiiz 
Senior Member
Posts: 186

Age: 38
Loc: Finland, Europe
Reg: 02-17-02
05-19-07 07:57 AM - Post#1168266    
    In response to Chevytech


Thanks guys! Got the timing set with the new dist. My truck's running better than ever before now. You literally gave it life extension for years to come since we do not have too many shops here that know how to fix US made cars and everything's more or less DIY.

Your instructions were perfect. Thanks!
jiiz


 
Chevytech 
Subject Matter Expert - Senior Member
Posts: 3071

Loc: Twin Cities, Minnesota, U...
Reg: 04-25-04
05-19-07 10:37 AM - Post#1168371    
    In response to jiiz

Thanks for the feed back.

Glad it worked out.
For those of you that are wondering why you are not getting replies to your thread:

Did you give the model, year, engine, fuel system type, and transmission information?

If the it has been altered from stock let us know about that too.


 
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