1991 camaro rs 3.1 v6 wont start just cranks
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Car: 1991 camaro rs
Engine: 3.1?
Transmission: a4
1991 camaro rs 3.1 v6 wont start just cranks
Ok here it goes. First off i'm not smart with cars but wanting to learn. I traded a 93 jeep cherokee for this camaro. as a work on project. now i need help the car cranks but wont start. the fuel pump hums for 2 or 3 seconds and bout 2 or 3 minutes later hums again. me and my neighbor used a timing light to see where it was it was severely off. the wires were in the wrong order got that fixed found out the fuel filter was on BACKWORDS of all things one we fixed that it started and ran rough for about 30 seconds now it does nothing. i have read alot of fourms about the car and the simalar problems. I am going to try a few things. i do not have one of those computer code things.. dont have the money to get one i just need some step by step for and idoit. also. the previous owner drilled holes in the cad converter for what reason idk. im going to cut it off anyways but. please help me.
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Car: 1987 Trans Am
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
welcome aboard!
luckily for you, these cars dont require anything special to read the codes other than a paper clip. you just need to jumper pins A & B and then turn the key to the on position. the check engine light will begin to flash - make note of the patterns and let us know what you come up with. we should be able to help you with whatever codes you get
luckily for you, these cars dont require anything special to read the codes other than a paper clip. you just need to jumper pins A & B and then turn the key to the on position. the check engine light will begin to flash - make note of the patterns and let us know what you come up with. we should be able to help you with whatever codes you get
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Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 1991 camaro rs 3.1 v6 wont start just cranks
Welcome again and the first thing you need to do if you haven't already is buy a manual (Chilton) and do some book learning. It tells you how most of the systems work and has instructions on how to diagnose problems and test some of the components. Reduced to the basics the engine needs the right amount of fuel, air and a spark at just the right time. Any one of these not there and no ignition. You need to figure out each one but it sounds like you have some known issues to sort out first. The fact that it ran even briefly is good. If you can take off the cat because if the previous owner drilled holes in it it may be clogged. As 1ADan says you can read the codes with a paper clip. The manual shows exactly where and how if you're not sure and also lists the codes you'll find. Good luck and post your findings.
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Car: 1991 camaro rs
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
ok. i do not have the money to get a chiltons man right now. but where do i place the paperclip? any diagrams?
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Car: Firebird
Engine: 2.8 v/6
Transmission: t/5
Axle/Gears: open/3.42
Re: 1991 camaro rs 3.1 v6 wont start just cranks
Look at the attachment and jump A and B with a wire or paper clip and count the flashes . 1 flash pause 2 flashes is code 12 and that is normal and will do it 3 times then any codes after that are what you are looking for . Come back with the codes and we can go from there .
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
Check that you are getting spark and fuel if you get neither it will not start and we can direct you from there what and how to check .
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Car: 1991 camaro rs
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
Do you have a fuel pressure gauge ? If not get one or rent or borrow one . If you have pressure then the injectors aren't working or the fuel isn't getting to them because you have air in the system but I doubt that is the case .
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
Get some rags and remove the cap from the port to test the pressure and press the valve down and hold the rags over it and see if any fuel comes out if it does and shoots out good then check that the injectors are fireing .
#12
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Car: 1991 camaro rs
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
where is the valve located at? how would i know if the injectors are firing?
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Car: Firebird
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
The valve is right by the connection at the intake for the brake booster . If you have some one crank the engine over hold a length of hose or a long screwdriver with the handle to your ear listen for the injectors ticking if they don't they aren't fireing .
#14
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Car: 1991 camaro rs
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
ok i heard the ticking. i pressed the valve no spray gas just kinda leaked out so fuel pump?
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
It could be a number of things . First you said in the 1st post you had to change the filter around was it new or old ? If it is old go ahead and replace it . Second you hear the pump run so it may be pumping and not getting past the filter or the regulator isn't holding pressure . To see if it is the regulator not holding pressure take some needle nose pliars with fuel hose over the jaws crimp the return line and see if it will start if it does you have a problem with the regulator . You can also pull the vacuum line at the regulator and if fuel is in the line or comes out of the nipple for the vacuum then the diaphram is bad .
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Car: 1991 camaro rs
Engine: 3.1?
Transmission: a4
Re: 1991 camaro rs 3.1 v6 wont start just cranks
It could be a number of things . First you said in the 1st post you had to change the filter around was it new or old ? If it is old go ahead and replace it . Second you hear the pump run so it may be pumping and not getting past the filter or the regulator isn't holding pressure . To see if it is the regulator not holding pressure take some needle nose pliars with fuel hose over the jaws crimp the return line and see if it will start if it does you have a problem with the regulator . You can also pull the vacuum line at the regulator and if fuel is in the line or comes out of the nipple for the vacuum then the diaphram is bad .
ok. well there was no pressure but when i put the key in an tried to crank it the gas sprayed out but it was thick. i think the gas is bad.
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Car: 1991 camaro rs
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Transmission: a4
Re: 1991 camaro rs 3.1 v6 wont start just cranks
It could be a number of things . First you said in the 1st post you had to change the filter around was it new or old ? If it is old go ahead and replace it . Second you hear the pump run so it may be pumping and not getting past the filter or the regulator isn't holding pressure . To see if it is the regulator not holding pressure take some needle nose pliars with fuel hose over the jaws crimp the return line and see if it will start if it does you have a problem with the regulator . You can also pull the vacuum line at the regulator and if fuel is in the line or comes out of the nipple for the vacuum then the diaphram is bad .
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
Happy Thanksgiving by the way . If the gas is old and you don't have alot in there add fresh with gas treatment or octane booster and replace the filter with a new one as it may have damadged the other one being installed backwards . If you get it running it may not run great with the bad gas in there but it should run better as the old gets out and you keep putting fresh in .
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Re: 1991 camaro rs 3.1 v6 wont start just cranks
Okay so here's the run down on my problem. I have a 91 v6 and the original motor went to crap, ordered another from hawks thirdgen and did a complete swap. Started up first try. Drive it 15 miles with just the manifolds on to an exhaust shop and had the exhaust replaced. I leave the shop and get about 2 miles down the road and my car dies. (It drove great before the exhaust replacement, just really loud). I popped the hood and the pos bat cable had fell out and that drained the battery. Tried to get a jump from a friend and it would turn over but would not start, it's getting spark and fuel. Any ideas on this. I ran the codes and its not throwing any, just the 12 is flashing.
#23
Re: 1991 camaro rs 3.1 v6 wont start just cranks
Look at the attachment and jump A and B with a wire or paper clip and count the flashes . 1 flash pause 2 flashes is code 12 and that is normal and will do it 3 times then any codes after that are what you are looking for . Come back with the codes and we can go from there .
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