1991 rs 3.1
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1991 rs 3.1
new here to 3rd gen. having an issue with car not starting turns over good. have fuel pressure at 45, have fire. will start right up with a little starting fluid. new parts are: new distributor, cap, rotor, wires, plugs and a coil. injectors, pressure regulator, coolant temp sensor. no codes present. this car is a field find so has been sitting. it did run originally when we got it but had fuel leaks at the injectors. replaced the distributor because they had left the cap off and it rusted.
thanks again any help is appreciated
Pat
thanks again any help is appreciated
Pat
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Re: 1991 rs 3.1
yes, was taken to a radiator shop to be cleaned and pressure tested. also forgot to mention earlier, the security light comes on with the key stays on around 5 seconds and goes out. was previously bypassed
Last edited by ppatmull1; 11-24-2018 at 03:53 PM.
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Car: 88 T firebird
Engine: 2.8
Transmission: t5
Re: 1991 rs 3.1
Wait ,so it starts on fluid? Omg the fuel isn't getting in the cylinders ? You have fuel pressure so must be injectors yeah ?
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Re: 1991 rs 3.1
yes injectors are new, cant find my noid lights to check them, might have to rent them. also going to do a compression check, haven't done that either. ill update after those are done. thanks for the responses so far.
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Re: 1991 rs 3.1
There are several reasons that good (new) fuel injectors with good fuel pressure behind them won't spray fuel , reasons involving the injectors not getting their required voltage to work .
Bad fuses , bad connections , bad VATS , and bad ECM are four reasons right off the top of my head , and there very well could be others (Like for instance , distributor reference pulses not making it to the ECM , for one) .
So , yeah , proper troubleshooting is what's gonna save the day here , rather than random parts replacement in the hope that the problem solves itself ......
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Re: 1991 rs 3.1
I havent randomly put on any parts everything added was needed as stated originally car was sitting for who knows how long. now on the vats bypass that was done and is questionable i havent seen one before so this could be right. is just hanging there bare. i uploaded a picture but not sure if im allowed to on here
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#8
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Re: 1991 rs 3.1
I havent randomly put on any parts everything added was needed as stated originally car was sitting for who knows how long. now on the vats bypass that was done and is questionable i havent seen one before so this could be right. is just hanging there bare. i uploaded a picture but not sure if im allowed to on here
And yea , I think you gotta have a certain number of posts till you can post pictures but I'm not 100% certain of that . Can you describe what has been bypassed and how it looks ?
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Re: 1991 rs 3.1
a 2 wire plug with white wires, has the wires cut and 5 resistors soldered together. but found my problem...noid lights showed injectors getting power. plugs are soaked and the compression test was terrible the best being 45
#10
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Re: 1991 rs 3.1
PS , any idea of how long it sat ? Was it a year or few ? A few more like 5 or 10 ?
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Re: 1991 rs 3.1
thanks again for the responses. the guy we got it from said it had sit in his back field atleast 3 years, hood open the whole time and no distributor cap. it did run originally after i replaced the distribulter plugs, wires and changed oil n filter but was running rich and black smoking and a couple injectors were leaking, housings were cracked. I am going to try another tester this is a loaner from oreilly
#12
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Re: 1991 rs 3.1
thanks again for the responses. the guy we got it from said it had sit in his back field atleast 3 years, hood open the whole time and no distributor cap. it did run originally after i replaced the distribulter plugs, wires and changed oil n filter but was running rich and black smoking and a couple injectors were leaking, housings were cracked. I am going to try another tester this is a loaner from oreilly
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Car: 88 T firebird
Engine: 2.8
Transmission: t5
Re: 1991 rs 3.1
Maybe I need to reread what I write more , when I say injectors , to me , that is anything related to them , wiring , and all. My bad . 😏
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