Jim Grant's Tech Tips
'92
Buick LeSabre, Hard starting & No Power
Q:
I
have a ‘92 Buick LeSabre Probably-one of the best cars I have owned.
It has a 3.8L engine. The problem is that it hesitates slightly going
up a hill and lately it doesn't start easy like it used to. I have had
my mechanic scan the codes twice and no faults. He didn't know how to
check the coil so I took it off and checked resistance on the primary
and got .7 ohms and checked the secondary and got between 11-12,000 ohms.
What do you think? Should I check the coil hot or cold?? Thank you for
any information you can give me....Roger R.
A:
The
resistance values you provided are right inline for a Type I ignition
coil. But your complaint isn’t inline for bad ignition coils. If
one of the three ignition coils was failing you would experience a very
pronounced engine misfire, skip or bucking. I’m more inclined to
believe that you may have a fuel related problem. My suggestion is to
start with a fuel pressure and just as importantly fuel volume test. A
loss of fuel pressure or volume will affect starting and the overall performance
of the vehicle.
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