84 Driving me CRAZY!!! Injector problems

[84rivierattype]

I'm new to the whole buick thing. I love old muscle cars, especially Pontiacs, but when I came across an 84 Riviera with a turbo in it I thought it was a joke. I really think this car is great. Just one problem, one fuel injector will not pulse. I have replaced the injector 3 times with new units and nothing. The noid light shows pulse. I have even compression across the board. New plugs and wires. I even swapped all of the injectors around. Any new injector I put in will not work anywhere. Any suggestions would be great!

 

[charlief1]

1st, you don't need double post to find info. You need to check your injector harness. It sounds like you have an open in it. Use a digital multi meter set on dc voltage and back probe the harness or use it to check continuity of the harness.

 

[84rivierattype]

Sorry about the multiple posts. Didn't realize it. I already checked the harness. It is fine. The problem is with the new injector. I can put it in any location, cyls 1-6, and it will not work. I have returned the injector 3 times and bought the next better model/different brand each time. None of them will work. The new injectors have all checked .5 ohms higher than the stock ones. I had Linder Technical Services test the new injector to see if it was working. It was fine. The old injectors work great in any position. I think I can hear a faint "tick" with a stethoscope on the new one but the cylinder still misses. I think it may be delivering a small amount of fuel at idle because it idles fairly smooth. The miss is worse when you accelerate. I can pull the plug off of the injector at an idle and notice a difference. Could I have the wrong injector from 3 different sources? It's driving me nuts!!

 

[charlief1]

You've got the wrong injector if that's the case or you bought a rebuilt one. NEVER buy a "rebuilt" injector, you never know what you're getting and from the ohm readings you have the wrong one. Who'd you buy it from?

 

[84rivierattype]

84 T-Type still drivin' me nuts

I bought (Now 4 Injectors) new. 3 from Speedway auto Parts and one from Advance Auto parts. 2 were Standard, 1 was Borg Warner, not sure of the other. I can't find a new AC Delco anywhere. The GM Dealership I spoke with said it is no longer available but they could order an alternative part number from an aftermarket source. Junk yards aren't a good option. From the info I have gathered '84 and '85 are the only years that will work. I just don't know where to find the right injector.

 

[charlief1]

Go to the wanted section and do a post for injectors. Some one should have a set or at least 1. You might want to do some posting in the HA forum as well. There are also aftermarket injectors that have a higher injection rate that should work.

 

[Chuck Leeper]

"NEVER buy a "rebuilt" injector, you never know what you're getting and from the ohm readings you have the wrong one."
1. A .5 ohm variation is not the problem.
2. Use of the word "rebuilt" is a misnomer.. Injs are cleaned, wear items replaced, and flow tested. That's it.

84Riv, what's the part # on 1 of the stockers?

 

[84rivierattype]

The number on one of the original injectors is 0280150218, however, GM says the original number is 2173125 (AC Delco). Thanks for the suggestion to post a wanted ad. I hope something will come up soon.

 

[charlief1]

I saw a set in the for sale section this morning but I don't remember who posted it. Hope that helps.

 

[Chuck Leeper]

That pt #..

The number on one of the original injectors is 0280150218, however, GM says the original number is 2173125 (AC Delco). Thanks for the suggestion to post a wanted ad. I hope something will come up soon.

is a Bosch number, and is the SAME injector that's in the 86/87 intercooled cars.
Call Brian, at G-Body parts. He has a connection for cleaned/flow tested sets.
Buying a set that's not been cleaned/flowed, can put you in the same spot you are now in...