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95' NA - Cranks, doesn't start

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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fredt2
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Year and Model: 850 GLT 1995
Location: Brazil
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95' NA - Cranks, doesn't start

Post by fredt2 »

Hello once again, I did a rebuild on my NA in the past 2 weeks, due to a leaking valve and blown head gasket(cyl 3-4), as mentioned in a previous post, so I took it apart, replaced everything that was busted and put it back together.
Now, with everything back in place, valve timing aligned, it cranks without a problem, but doesn't start. Haven't had a single problem like this before.
It probably isn't sparking, but i couldn't pull a spark plug to check, as I was alone and needed someone to crank from the inside.
I know the drill, cam sensor, ignition sensor and such, but is there anything else that I should pay attention when check tomorrow? Any heads-up will be greatly appreciated.

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Sveedy
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Post by Sveedy »

The round plate that the rotor mounts to can be mistakenly indexed 180* off, which will cause a crank/no start situation.
Try to learn life's bad lessons vicariously through others.


1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT

fredt2
Posts: 45
Joined: 26 July 2022
Year and Model: 850 GLT 1995
Location: Brazil
Has thanked: 2 times
Been thanked: 7 times

Post by fredt2 »

Sveedy wrote: 21 May 2025, 18:39 The round plate that the rotor mounts to can be mistakenly indexed 180* off, which will cause a crank/no start situation.
Thanks, hadn't really thought about the rotor, I had checked the cam sensor round piece but not the rotor.

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misha
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Post by misha »

Sveedy wrote: 21 May 2025, 18:39 The round plate that the rotor mounts to can be mistakenly indexed 180* off, which will cause a crank/no start situation.
Cam position sensor back plate too.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

fredt2
Posts: 45
Joined: 26 July 2022
Year and Model: 850 GLT 1995
Location: Brazil
Has thanked: 2 times
Been thanked: 7 times

Post by fredt2 »

misha wrote: 22 May 2025, 05:14
Sveedy wrote: 21 May 2025, 18:39 The round plate that the rotor mounts to can be mistakenly indexed 180* off, which will cause a crank/no start situation.
Cam position sensor back plate too.
I don't think the cam sensor or the round part that bolts to the cam can be installed backwards, took it apart yesterday and found no way to put it reversed, the slots on the round part are offset, so it only works a certain way, don't know about the rotor tho

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misha
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Post by misha »

Not backwards but,just like the one behind distributor...it can go in ...in two ways.
One way is a no start.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

fredt2
Posts: 45
Joined: 26 July 2022
Year and Model: 850 GLT 1995
Location: Brazil
Has thanked: 2 times
Been thanked: 7 times

Post by fredt2 »

Well, this is embarrassing....
Turns out I wired the spark plugs in reverse order, in the process of disassembling the distributor i checked and saw that the wires were backwards.....put it back together correctly and she spun like a beauty, feels like a new car

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Sveedy
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Post by Sveedy »

^ Far out ! It is a great feeling after doing all that work, and driving around in the fruits of your labor !
Try to learn life's bad lessons vicariously through others.


1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT

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