Fuel injector testing
Fuel injector testing
My '88 Grand Prix 2.8litre hesitates and stumbles badly under load, and cranks but wont restart when its hot. When it wont restart, I tested for spark and fuel pressure is 42psi when cranking. I was thinking its the injectors, so I pulled the plenum on the car and measured them.
On the front bank, they read:
11.1 ohms
9.5
9.5
and on the firewall side, they read:
12.2
12.3
12.1
I was hoping I find one or two injectors reading more like 3 ohms making the decision easier. Do you think the front 3 injectors are out of spec enough to cause severe hesitation and starting problems?? Thanks!
On the front bank, they read:
11.1 ohms
9.5
9.5
and on the firewall side, they read:
12.2
12.3
12.1
I was hoping I find one or two injectors reading more like 3 ohms making the decision easier. Do you think the front 3 injectors are out of spec enough to cause severe hesitation and starting problems?? Thanks!
Fuel injector testing
To throw out an idea, try swapping coils/ignition module. If that doesn't work, then try unplugging the TCC on the trans (Located on driverside of trans facing the front of car)
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