idahoBLKss Posted January 10, 2013 Report Share Posted January 10, 2013 i got a 94 gmc sonoma multiport injecton v6 s10 that is acting up right now and need help from some of you tech guys on to what the problem might be. what it is doing is if i stab the gas it will almost die or die all together but if i roll into the throttle very slowly i can hit full rpms no problem it also has a hard time starting also cold or hot. with the intake tube off of the manifold making the throttle body exposed if i spray brake cleaner into the throttle body and open the throttle body manually by hand it wont die as long as im spraying brake cleaner into the hole .this is making me wonder if its getting enough fuel at half to full throttle . i hooked a fuel pressure gauge up to the fuel line on the shrader valve behind the manifold and it holds steady at 58 psi so i know the pump is good. things i have replaced already... with brand new items... -fuel filter -spider injection (not a cheap item to replace) -tps -egr valve at this point im tired of throwing money at this thing , i could of done a 5.3 swap by now lol i need some ideas of what else it could be!! Quote Link to comment Share on other sites More sharing options...
D1SCSS Posted January 10, 2013 Report Share Posted January 10, 2013 If you had problems with the egr, it would not idle worth a crap. Usually the spider malfunction will cause a misfire in only one or two cyl. Could the fuel be bad? Did you check for codes? Quote Link to comment Share on other sites More sharing options...
idahoBLKss Posted January 10, 2013 Author Report Share Posted January 10, 2013 i dont think the fuel is bad but its a possibility but its never sat for to long unless i filled up with a bad tank of gas but not very likely. weird thing is its not throwing any codes either . Quote Link to comment Share on other sites More sharing options...
shawnss Posted January 10, 2013 Report Share Posted January 10, 2013 I had a chevy etreme the had the same 4.3 and was doing something simliar to this. It was super hard to start and sometimes while I was just crusing along it would start to bog really bad and would have no power. I after fighting it for a few weeks I ended up cleaning the TB really good it had a ton of build up on it and added some sea foam to the tank. then I also changed the cap, rotor, wires and pluigs and it ran great after word's not sure if that what your problem is but thats what helped mine. Quote Link to comment Share on other sites More sharing options...
BLNAWAY Posted January 10, 2013 Report Share Posted January 10, 2013 i would pull a fuel sample and then check the plugs maybe they can tell you something you cant see Quote Link to comment Share on other sites More sharing options...
SSchevySS Posted January 10, 2013 Report Share Posted January 10, 2013 I had a 2000 GMC Jimmy Highrider 4x4 4.3l, mine was running perfect. Then one day it started to bog and not run to good at all, I took it to a friend/ mechanic he checked everything nothing was wrong but was stilling bogging. So whats wrong with it !!! IDK !!! The only thing I have not checked is the CAT so we dropped the exhaust, took it for a test drive and it ran like a champ. Not saying your CAT is bad but mine was !!! The exhaust sound did not change with the bad Cat, but a new one fixed it. And that was the only part we changed !!! Quote Link to comment Share on other sites More sharing options...
LilEz02 Posted January 10, 2013 Report Share Posted January 10, 2013 i worked on a buddys 4.3 4wd sonoma. i replace everything you guys metioned, including the spider injection and i got a bad one at first and had to get another one. double check that thing. i hate those things but now i can change one in like 35 minutes. had that manifold off 3 times in 2 days Quote Link to comment Share on other sites More sharing options...
Cramer Posted January 10, 2013 Report Share Posted January 10, 2013 This is called Karma Jon. Threaten to sell the SS and look what happens! I would check the cats also. And BTW Goals are supposed to be broken...... 11.1????? What happened to the 10's for a goal? Can't sell it till you get your goal! Quote Link to comment Share on other sites More sharing options...
idahoBLKss Posted January 10, 2013 Author Report Share Posted January 10, 2013 lots of good ideas guys thanks for the info , i hope its not a bad spider cause those things are spendy. sinner- the truck isnt sold yet buddy , if its still around come spring it will get a 10 sec slip .so quit kicking me in the balls !! lol Quote Link to comment Share on other sites More sharing options...
1skss Posted January 10, 2013 Report Share Posted January 10, 2013 I had the same problem with my 95 sierra 5.7. Scanned it and it came out as bad tpi sensor,replaced that but still had the same issue so then I check fuel pressure,fuel pump seemed to be working fine but still replaced pump and solved the problem. Quote Link to comment Share on other sites More sharing options...
kissfans03ss Posted January 10, 2013 Report Share Posted January 10, 2013 Check the idle air control valve on the throttle body and make sure it is not gummed up. Sent from my DROID BIONIC using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
rickyrick562 Posted January 10, 2013 Report Share Posted January 10, 2013 Its a sign to get rid of that and not the ss lol sorry I had to Quote Link to comment Share on other sites More sharing options...
silverado_ss_04 Posted January 10, 2013 Report Share Posted January 10, 2013 time to sell it and buy a honda Quote Link to comment Share on other sites More sharing options...
idahoBLKss Posted January 10, 2013 Author Report Share Posted January 10, 2013 you guys are killin' me Quote Link to comment Share on other sites More sharing options...
BLNAWAY Posted January 11, 2013 Report Share Posted January 11, 2013 time to sell it and buy a honda and keep the SS Quote Link to comment Share on other sites More sharing options...
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