tbi to carb conversion wont crank help
tbi to carb conversion wont crank help
did tbi to carb conversion on a 87 camaro and got everything together but when u turn key it wont start if u jump wires it will start but wont crank with key help me
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forgot to say the motor is a like 74 chevy 350
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forgot to say the motor is a like 74 chevy 350
Last edited by john w; Jun 30, 2008 at 11:05 AM. Reason: Automerged Doublepost
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
'87 didn't have TBI available.
I'm not sure from your description what it's doing. You seem to be using "crank" and "start" interchangeably.
I'm not sure from your description what it's doing. You seem to be using "crank" and "start" interchangeably.
Junior Member
Joined: Mar 2005
Posts: 50
Likes: 0
From: Florida
Car: 89 RS
Engine: 305
Transmission: Auto w/ evil shift kit; not my doin
Axle/Gears: It has a locker; not my doing
Re: tbi to carb conversion wont crank help
It's not a TBI, it's a computer controled Q-Jet. This evening I did the same conversion - fairly easy and straight forward suprisingly. Anyway, mine wouldn't turn over at first and then I realized that when I put in the new carb i mixed up the TACH and BATT wires that go to the new distributor. The thinner (yellow for me) was the TACH and big red was BATT.
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Switching the "Tach" and "Batt" wires won't keep it from "turning over". It might keep it from firing or starting, but it will "crank" and "turn over" with those wires switched.
Supreme Member
iTrader: (3)
Joined: May 2005
Posts: 1,942
Likes: 0
From: Southern IL
Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: tbi to carb conversion wont crank help
I am not trying to start a cyber brawl but did you read what you posted
if so, if you had the knowlege to help yourself, do you think you would know what is going on
do a scene one take two and try it agian with a little explination
if so, if you had the knowlege to help yourself, do you think you would know what is going on
do a scene one take two and try it agian with a little explination
Re: tbi to carb conversion wont crank help
sorry its computer carb but i did same conversion on friends car 89 firebird tbi and had same problem wont turnover like no power to starter but if u jump starter it will crank
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Senior Member
Joined: Apr 2005
Posts: 753
Likes: 0
From: Eastern Connecticut
Car: 1989 RS Camaro
Engine: 350 Carb(soon a 400)
Transmission: 5-Speed/th350
Axle/Gears: 10 bolt 3.73
Re: tbi to carb conversion wont crank help
sounds like the wire for the starter is not getting power. first make sure that the small wire on the starter is correctly hooked up.
IIRC 87 did not have vats. so there should be no prob with that. make sure that all of your wires are hooked up I.E. on my car there was 3 sets of wires that went to the main starter nut. also make sure grounds are good.
IIRC 87 did not have vats. so there should be no prob with that. make sure that all of your wires are hooked up I.E. on my car there was 3 sets of wires that went to the main starter nut. also make sure grounds are good.
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