Question about 1991 Chevrolet Camaro

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I have a 91 camaro 3.1 V6 has spark fuel and power to the injector but wont start just wondering what it could be

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Sometimes it is the ecm which is the computer that goes bad and can no longer sends signals to the starter to turn over. sometimes could be the firing order or timing. check these things out.

Posted on Jul 26, 2009

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91 buick skylark 3.3 v6 has spark but no power to injectors


your injectors get their 12v from the asd relay and the computer controls their - side. the asd relay also powers the coil, so if you have spark but no juice to the injectors then you are looking for a broken wire to the injector rail. all of the injectors get their juice from that one source.

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91 Camaro truns over, has fuel and pressure, good spark, i suspect there is no power to the injectors. Ran great, now it shuts off and will not start. Help please as we have troubled shoot many of the...


The 5.0 tuned port engine has two sets of injectors - all injectors are powered by the pink-black wires from two 10amp injector fuses. They get ground signals on the green and blue wires from the computer.
You can use a low voltage test light to check for injector pulse.

Aug 16, 2012 | 1991 Chevrolet Camaro

1 Answer

I have a 91 camaro just got the fuel pump change n fuel filter also cleaned out the injectors in still won't start up full turn n my dash board wus workin just fine now its not working just got a new...


ask a local mechanic to have a look ,you may have left a power supply cable off from the positive terminal ,as for the non start then check for a spark and if a spark then check the fuel pressure it should be 55lbs on the injector rail is a tyre valve looking connection check the fuel pressure here

Apr 28, 2012 | 1991 Chevrolet Camaro

1 Answer

91 camaro 5.0 5sp no injector pulse and no power to fuel pump


Using a multimeter check the wiring for power at the pump and at the relay. It sounds like a bad relay.

Jul 19, 2010 | 1991 Chevrolet Camaro

1 Answer

87 IROC WITH A ZZ4 OUT OF A 91 Z28... fitted a


Fuel pressure? Do you hear the fuel pump running? Read the codes to see if ECM is still alive. Do you have spark at the plugs? Remember all motors need 3 things to run air, fuel, and fire at the right time.

Mar 16, 2010 | 1987 Chevrolet Camaro

1 Answer

My 91 Camero, 3.1, V6 MFI ran just fine. We shut


are the injectors working check with a noid light if not check power supply.

Jan 14, 2010 | 1991 Chevrolet Camaro

1 Answer

91camaro 3.1 wont start


Try your ingition control mod, located on distributor. Had problem with my 89 and replaced that and fires up everytime now.

Apr 28, 2009 | 1991 Chevrolet Camaro

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