Jakethewhite Posted November 21, 2017 Share Posted November 21, 2017 I changed the fuel pump and I know that it works because when I disconnect the line and bypass the fuel relay it pumps fuel. So I changed the fuel relay because I wasn't getting fuel while the key was turn or cranked or anything. So I replaced it and still nothing changed. No fuel will pump without bypassing. Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 21, 2017 Share Posted November 21, 2017 Year and engine type? Quote Link to comment Share on other sites More sharing options...
naru Posted November 22, 2017 Share Posted November 22, 2017 Probably an ignition fault. Got spark? Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 22, 2017 Author Share Posted November 22, 2017 87 suburbs gl wagon 4x4 and yes there's spark Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 22, 2017 Share Posted November 22, 2017 I think, but am not sure, that 87 and newer are SPFI vs carburetor. It makes a big difference in what the relay is controlled by. Quote Link to comment Share on other sites More sharing options...
wagons Posted November 22, 2017 Share Posted November 22, 2017 Hey DaveT, mine is an 1987 1.8 sohc vin 5. This means 4% of all built are the sohc with the carb I guess I stuk out on simplicity lol. So to the OP, is it fuel injected or carb? That will make diagnostics easier if we all know Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 22, 2017 Author Share Posted November 22, 2017 Definately carb on my model Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 22, 2017 Author Share Posted November 22, 2017 Engine is a 1.8 EA82 Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 22, 2017 Share Posted November 22, 2017 Yes, they are all EA82. Carb, SPFI, MPFI, or Turbo - all different fuel systems and controls. Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 22, 2017 Author Share Posted November 22, 2017 So what else did you need to know Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 22, 2017 Share Posted November 22, 2017 If it's a carburetor, it will have an odd shaped metal air cleaner case on top of the carb.. If it's SPFI, the rubber boot on top of the throttle body should have SPFI embossed in the rubber, and the air cleaner is a box on the fender, side opposite the battery. MPFI I haven't seen, they were not common. Turbo, well, there is a turbo somewhere near the engine. Alternate - take a picture of what's under the hood, and post it. Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 22, 2017 Author Share Posted November 22, 2017 Photo seems easiest it's attached Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 22, 2017 Author Share Posted November 22, 2017 Here it is Quote Link to comment Share on other sites More sharing options...
naru Posted November 22, 2017 Share Posted November 22, 2017 Check fuse #11. If OK verify ignition relay operation. Check fuses 5 and 12 too. Quote Link to comment Share on other sites More sharing options...
wagons Posted November 22, 2017 Share Posted November 22, 2017 Ok you have have a spfi. It's a fuel injected engine Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 22, 2017 Share Posted November 22, 2017 The relay should be energised by a wire from the ECU. Connect a voltmeter or small test light to the coil of the relay, and sre if it gets power while cranking. Next step, move to the pin on the ECU. Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 29, 2017 Author Share Posted November 29, 2017 It was one of the fuses. Number 12 wasn't connected at all. Plugged this in and suddenly everything started turning on. But now another prob exists. It will start and then die immediately and dies quicker if I try to press the gas. Any ideas. Thanks Quote Link to comment Share on other sites More sharing options...
naru Posted November 29, 2017 Share Posted November 29, 2017 Low fuel pressure. Quote Link to comment Share on other sites More sharing options...
silverhelme Posted November 29, 2017 Share Posted November 29, 2017 Not to be picky but when you replaced the fuel pump, was it a carb or spfi pump? Carb pump doesn't have enough pressure for the spfi system. 2 Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 29, 2017 Author Share Posted November 29, 2017 I'm not sure. I replaced it with one of the ones that said it would it. It is a spectra premium and now that I read the fine print yes it says carb model but on the website it says fits my vehicle. Didn't see that carb identification tho. There's other I can buy for fuel injection. So that would be the problem then? Hopefully Quote Link to comment Share on other sites More sharing options...
Jakethewhite Posted November 29, 2017 Author Share Posted November 29, 2017 I'm not sure. I replaced it with one of the ones that said it would it. It is a spectra premium and now that I read the fine print yes it says carb model but on the website it says fits my vehicle. Didn't see that carb identification tho. There's other I can buy for fuel injection. So that would be the problem then? Hopefully 1 Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 29, 2017 Share Posted November 29, 2017 A carb fuel pump won't make enough pressure to tun a SPFI. Carbs take 5 to 10psi roughly. SPFI requires over 20psi. Quote Link to comment Share on other sites More sharing options...
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