DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
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got a problem with a redtop starting
1st problem
The afm wires were broke and touching each other, it run but like a bag of shit, when you touched the connector the car would idle low and not rev. Think we cured the problem by re connecting them so they werent touching each other. Now it wont start.
Checked the continuity from the plug back into the loom and all seems to be ok
Now i'm thinking maybe the afm is broke as it was only running before (like a bag of shit) because it was shorting????
Now without having another afm thier to try i looked further into it .ie tps
2nd problem
The tps seems low on voltage when the throttle is closed or open. I measured the voltage to be no more than 0.02v which is supposed to be 5v ish so im told. But the battery did start going flat (10V) which wouldnt help. Could this be the problem or in addition to the afm?
Any info of how to do the papeclip test wouldnt go a miss either 
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mac1976
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Registered: 29th Dec 06
Location: tullibody , clackmannanshire
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www.topbuzz.co.uk
will tell you all you need to know mate
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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quote:
Originally posted by mac1976
www.topbuzz.co.uk
will tell you all you need to know mate
thats for the paperclip test yeah?
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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Ace vauxhall claim that the afm they supplied is a refurbed item. Im not so sure though
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mad_mike252
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Registered: 15th Nov 07
Location: Nottinghamshire
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have u clend all the each's
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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quote:
Originally posted by mad_mike252 have u clend all the each's
Assuming that meant have i cleaned the connectors? I've checked for continuity so that must mean im gettin a connection
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DaveB
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Registered: 29th Dec 00
Location: Huddersfield
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Is the ECU light on when the car's running then?
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mad_mike252
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Registered: 15th Nov 07
Location: Nottinghamshire
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quote:
Originally posted by DAZ1985
quote:
Originally posted by mad_mike252 have u clend all the each's
Assuming that meant have i cleaned the connectors? I've checked for continuity so that must mean im gettin a connection
yes i wud clen tham en way
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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quote:
Originally posted by DaveB Is the ECU light on when the car's running then?
When it run yes it was on. Now it doesnt even want fire up
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DaveB
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Registered: 29th Dec 00
Location: Huddersfield
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Well if you read the codes off now it will give you the fault.
if you unplug the AFM on an XE you can normally get it to start, just. So having a knacked one on it, shouldn't really totally stop it from working.
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
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Not read the codes yet im at work. Tried starting it with the afm unpluged was no different
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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Done a fault reader, with car not runnin conected on jump leads and got:
23-knock sensor
74-afm high volt
21-tps high volt
31-crank no sig
Afm got an earth but the tps hasnt when i believe it should have?
Is that right?
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Rybo
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Registered: 6th Mar 08
Location: Cumbria
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try starting it with the afm unplugged bud...if the afm is unplugged it'll start but run shit,(hence proving its buggered)i had to replace my afm 2 times because it was faulty both times (mine wouldnt start like yours),also make sure you have good earths as that caused me probs when i put my dispac engine in,i ended up putting an earth strap off the gearbox to chassis leg to solve the problem
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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It wont start with the afm unplugged. All the earths look good. Checked them and they all work. Chased the earth wire from the tps (in the loom) back to the ecu and seems to be getting connection. Just going to check its going to the right pin in the ecu. After that its looking like the ecu maybe?
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DaveB
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Registered: 29th Dec 00
Location: Huddersfield
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I'd say both your Afm and TPS are fucked. I wouldn't start messing with wires until you've replaced them, both.
BUT before you do, check the 2 earths on each side of the fuel rail, as these are for all the inlet sensors. I had loads of problems with these because the previous owner had painted the fuel rail with hammerite.
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
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Ill test them before replacing them though. Picked up a abit of a guide off my mate lastnight. Explains in detail how to do it so worth a try 1st
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
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Ill test them before replacing them though. Picked up a abit of a guide off my mate lastnight. Explains in detail how to do it so worth a try 1st
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mad_mike252
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Registered: 15th Nov 07
Location: Nottinghamshire
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74-afm high volt
21-tps high volt
thats a earth problem
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
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Like others have said it should really start with the AFM unplugged, ran my LET with it unplugged for about 3 months till I found another one.
Could it be something a little more simple stopping it from starting like its just flooded?
Not sure about it being an earth problem, ther arent many on the ECU side of things. Do you have a laptop with a serial port?
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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It wont start with the afm unplugged
The afm and tps both have earths, volts and signal.
AFM
signal is pin 7
volt is pin 37
ground is 26
tps
signal is 53
volt is 12
ground is 30
the afm is getting earth but the tps isn't
I'm going to test the tps later
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spankyjames
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Registered: 26th Jun 06
Location: Corsham, Wiltshire
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how are you testing the sensors as i need to do it to my afm off a late type xe
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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Ill let you know as and when i test it havent got the manual in front of me
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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If youve got a laptop Ive got a scanner that will show you all the live engine data, makes it easy to spot if somethings playing up
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DAZ1985
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Registered: 3rd Sep 06
Location: Scholar Green, Cheshire
User status: Offline
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I got a laptop yeah, could you send me what you've got luke?
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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You need the lead for it, used it on my LET and sorted me out. If you get stuck you can paypal me a deposit and ill post it you, unless you ever come round this way
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