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The single wire sensor on the drivers side of the engine near the spark plugs is a temperature sending unit.
The oil pressure switches are near the firewall at the center of the engine over the bell housing.
You can manually apply power to the fuel pump relay making it send power to the pump. Have you checked the fuses that are in the center of the dash but behind the covers? Also verify that your Injector Fuses are actually getting their power and passing it thru them? On my car it would not run until I corrected the corrosion on the fuse block and fuses.
Come on Simon
You need to get this thing going so that the good people of Lancashire can hear the rumble of a small block Chevy on their narrow red brick streets. Once they see a Corvette in full flight surly they will give up their obsession with the “hot hatch” which in my humble opinion looks like a egg on wheels, 😂🤣😂🤣
Last edited by GregMartin; Nov 24, 2018 at 01:46 AM.
IVE got a bit further removed all injector plugs 12v at all injectors on the harness to each plug put mood light in cranked on each injector plug all firing mood light blink on all injectors still no start ?
checked fuel pump put stethoscope on fuel tank can hear pump prime when ignition switched on but noticed when cranking pump dosnt run 😞
If I want to run the pump whilst cranking to confirm that the engine will run what's the best way to do this ?
also as mentioned in the post in one of the replays are there some additional fuses in the centre console if so where
last question in this image can anyone tell my what is what on the fuel pump wires black earth
purple ? Beige ? Green white
which one primes which one stay energised when cranking and car running I'm going to check the tps switch will this prevent the signal from the ecm not turning the fuel pump on ?
You can jump pins 87 and 30 at the fuel pump relay...that should keep the pump running constantly...then you can try starting it...just make SURE you are jumping the right pins when you remove the fuel pump relay...there are not separate wires to the pump...fuel pump relay “control” side is power side switched...ECM will send 12v for prime for 2 seconds and when it sees an RPM signal it will send 12 volts continuously while cranking or running !!
Ok great I'll give that a go assuming it starts if I do this what is the next stage of fault finding does it indicate a faulty ecm ?
or is there a wire from fuel relay to ecm that I need to check thanks👍
Ok great I'll give that a go assuming it starts if I do this what is the next stage of fault finding does it indicate a faulty ecm ?
or is there a wire from fuel relay to ecm that I need to check thanks��
To save myself from typing watch this video on how to check a GM fuel pump relay circuit...checking the ground (earth) on the control side is shown but not LOAD side...you would connect the test light to battery POSITIVE and touch pin 30...that is the load side ground and the test light should light !!...goes through the windings of the fuel pump to ground !!....sorry, but read the earlier posts and you HAVE pressure at the rail so this test is moot at this point !!...if you have fuel pressure and injection pulse
while cranking the engine should start unless the injectors are stuck closed (it WAS in storage for a long time !!!)
Originally Posted by rwobs777;1598401072..sorry, but read the earlier posts and you HAVE pressure at the rail so this test is moot at this point !!...if you have fuel pressure and injection pulse[left
while cranking the engine should start unless the injectors are stuck closed (it WAS in storage for a long time !!!)
I don’t think he has an injector pulse does he??
[/left]
Yes !!...first paragraph of thread 27...he has injection pulse...I’m assuming he’s using a “noid light” !!!
yeah ok
so he has spark
he has fuel pressure
he has injector pulse
so i don’t know, could all injectors be blocked? It seams unlikely to me but I’m out of ideas.
yeah ok
so he has spark
he has fuel pressure
he has injector pulse
so i don’t know, could all injectors be blocked? It seams unlikely to me but I’m out of ideas.
I mentioned that in a previous thread...the car WAS sitting in storage for a long time..they may be stuck mechanically closed !!
Thanks again for the replies the car has been stored for a while correct . It could be possible injectors are stuck but I would have thought some would be free and that it might start although run rough ?
once I have tried with pump running I can't think of anything else it can be as we have spark air injector pulse but plugs dry no fuel getting into bores ,
but I still need to understand why fuel pump dosnt run on cranking
I'll report back with my findings
and I'll keep praying 🙏😂
Thanks again for the replies the car has been stored for a while correct . It could be possible injectors are stuck but I would have thought some would be free and that it might start although run rough ?
once I have tried with pump running I can't think of anything else it can be as we have spark air injector pulse but plugs dry no fuel getting into bores ,
but I still need to understand why fuel pump dosnt run on cranking
I'll report back with my findings
and I'll keep praying 🙏😂
fuel system is pressurized enough to start the engine during crank, once it turns over pump relay is energized by signal from PCM. If you think the injectors are mechanically "stuck" pull the rail (after releasing the pressure), pull the injectors, and have them cleaned and tested.
fuel system is pressurized enough to start the engine during crank, once it turns over pump relay is energized by signal from PCM. If you think the injectors are mechanically "stuck" pull the rail (after releasing the pressure), pull the injectors, and have them cleaned and tested.
i tapped all the injestors with small hammer
🔨 fixed most things 😁
Then put battery back back on and a jump battery quick squirt easy start fired straight up and stayed running 🏃
ran it for 15mins sounds sweet
turned it off and tried it again started straight up so seems needed new battery and fuel ⛽️
what is normal operating temperature on coolng gauge. And oil pressure when warm on tickover
thanks for all all your help guys have some more questions ongoing will post new threads windows nit working properly
thanks again👍
Great news time to take it for a skid 😂🤣😅
My oil pressure is about 60 psi cold at idle and about 40psi when hot from memory . I usually have my gauges set to metric a kilo pascals don’t mean a lot to me so I normally look at oil temp which is about 115 degrees C when hot. Someone has added a thermostat to my fans at some point during the cars life, so I have them set to come on at about 95 degrees C and to turn off at about 85 degrees C but it’s a lot hotter here than where you are. Also make sure you have all three peace’s of the front spoiler installed or the car my overheat.
That is a gorgeous Jaguar you have there my friend! I have always had a soft spot for the six cylinder engine.
I can't believe that your injectors were stuck like that! Congratulations on getting it to run again!!
On this side of the Atlantic I use BG 44K fuel injection cleaner once every couple thousand miles or when my idle is a bit off. The BG 44K is an incredible cleaner for the entire fuel system. You might want to run something like this through the engine and clean up the fuel system. The 44K is put into the fuel tank before filling. I might recommend that you change the fuel filter after doing this as if you have lots of junk in the system it will get caught in the filter and possibly plug it up.
