bio6040

Everything in that diagram goes back to the ECU. The way it makes it back varies. The wires go through the EFI main relay, fuel pump, circuit opening relay, the VSV, the Ignitier, and O2 sensors.

xxxtreme22r

which color wires did he jumper?

xxxtreme22r

this is what I am working off of:

bio6040

Green circle. The wire colors where the red and black ones. Not the white one. Diagram B06847 HAC E2 are the two that he jumped, I think?

bio6040

I wonder if the TPS is at fault?

bio6040

Or it could be check connector on B06846 +B to VF. That might be the ones jumped?

xxxtreme22r

looks like that connector has a black wire with white stripe and a red wire with a white stripe correct?

bio6040

No stripes soild color wires.

xxxtreme22r

are you 100 % positive your fuel pump is working?

xxxtreme22r

I have shaded the connector he jumpered here:

for some reason though the colors of the wires don't match up

bio6040

How can I check to see if it working? I can smell gas when I pump the pedal to flood the injectors.

xxxtreme22r

you should be able to hear it spinning. try something as I am curious, pull that plug out and try to start the truck.

norcal707

how about disconneted the battery to reset the computer, and did you check the fuses inside the cab too?

bio6040

The plug is not connected to anything it is test connector. I don't hear the pump spinning when I try to start the truck.

bio6040

I have not tried disconnecting the battery yet. I'll try that also.

ChefYota4x4

iTrader: (5)

OMGOSHHHHHHH, Bio, ...seriously, you need to call this guy, tell him either he PAYS for towing to ANOTHER CERTIFIED SHOP, or you are going to take him to small claims, as well as filing with the BBB, Consumer Watch Dog Groups of every kind, and ....well, then you'll go from there! TOTALLY unacceptable, Bio, period, that the guy Grounds our your system, then hands you back the keys, tells you to call a tow truck and charges you 71$???????

Secondly, as far as I know, the 2 WIRE plug is the Diagnostic Port for the EFI 86, ...just reading this on another thread(sorry, can't find it just yet, busy). I would think it's literally impossible, HAD THE MORON hooked up the jump between the TWO PLUGS, within the proper Yellow OOOPS tube, ....IT CAN'T fry ANYTHING! He obviously grounded out your system, most likely to the ECU.(PLEASE, forgive me if I'm missing something, but I really thought I'd read through thoroughly, lol)

The Circuit Open Relay CAN MOST DEFINITELY cause the fuel pump to shut down. However, depending on what he's shorted out, ....WHO KNOWS, RIGHT?

So, I would DEMAND that he get your rig to an alternate shop(for professional courtesy), pay for the repairs of any blown relays, etc.(heck, it might even have blown some inline fuses....which, trust me, Bio, ...can be a PITA to find. Especially if someone put them in aftermarket.)

When you turn the key over, it's cranking, but WILL NOT start, correct? Is it possible, Xxxtreme, that the guy blew the Pick-up or ignitor? Which, in turn, would NOT allow any power to the pump, no? I mean, if there is NO SPARK, ...the Pump fuel cut sets off, does it not? Sorry if you've checked the COR, ....but I believe, if I remember right, it has 2 functions. I'd have to look into it further when I had time. I just feel so bad for you, Bio, .....so I HAD TO SCREAM AT THE SCREEN! lol.

xxxtreme22r

not sure chef, I was kinda thinking the ignitor as well but the connector he was on is the o2 check connector. maybe he fried an o2 sensor which is causing the fuel pump not to come on? you'd be the guy for this fix as you have the 87 which should not be much different than his 86. unfortunately i have a carbed motor and do not have any of those pesky c(rap)heck connectors the efi guys have.

your right though, I'be be taking this thing to an auto electrical shop to get fixed and make the guy pay for it. Like I said, it was running when it went in and not when it went out and it stopped running because the guy jumpered something he should not have jumped. the only things I know of that should go into those connectors is an ohm/volt meter to monitor the o2 sensors when the engine is running.

bio6040

Thanks Chef! I have done everything with the shop that can be done. I was just hoping that I could get pointed in the right derection on what it might be so the next idiot has a clue on where to start. I am going to replace the fuel pump first and then hook up a friends ECU and see what happens from there. Then it will be going to a repair shop for sure!

ChefYota4x4

iTrader: (5)

While having someone turn it over, Bio....pull a plug wire and lay it against a metallic location with no sensitive sensors, etc., ...and see if you're getting spark, ok? You need to find out if it's spark, fuel, or both. Start out by verifying the easiest. If you can't hear the fuel pump, but it's cranking, you need to figure out whether it's NOT pumping because something has 'cut' it's operation as to no spark, etc. Or, if it's due to the COR. The COR should be in your pass. side, behind the glove box. You can hear it when you turn the key to ALMOST start the car(click,click)...it's very possible that he fried that by shorting it out, as it's before the ECU in the pathway back from Diagnostic port to ECU(is that correct, Xxxtreme?) The main relay, ..not so likely, as I don't think the ignition would even turn over, right? You said your EFI fuse is ok, correct? The 15A fuse in the kick panel/driver side, bottom left...(as long as it's in the same place as my 87...not POSITIVE, as the diagnostic port is totally different.)

Best wishes, Bio, and GET AFTER THIS GUY, OK? Be demanding and see what his response is. If he's very defensive and says "Go ahead, take me to court", ....HE'S GUILTY AS SIN and he knows he doesn't have a chance.(or he's a narcissist and thinks he can't be touched). If, rather, he says, "Please, Bio, let me make this right"....HE'S JUST AS GUILTY FOR SCREWING UP YOUR RIG, lol, ...but at least he's awakened to the fact that 'HE'S NOT going to get away with leaving you hanging'.....It's worth a try, just don't leave it IN HIS HANDS....he's the one that screwed up, OBVIOUSLY!

xxxtreme22r

personally I wouldn't touch it, if you break something else while troubleshooting it then the original shop is most likely gonna try to blame it on you. I would just tell the next shop what the other shop guy did and go from there. And learning from chef's the ecu you hook up has to be the same year. Remember that chef ?? somewhere in your thread I did post up what ecu's were goo on what years.