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#*%@*#! (expletive) - 1996 850 Turbo

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june82000
Posts: 21
Joined: 29 Jan 2012, 20:33
Year and Model: 1996 850 Turbo
Location: Virginia

Post by june82000 »

erikv11 wrote:What I know for sure: I have have a 96 850 and have been unable to start before due to the alarm. When this happens, the starter will not engage.

Before you change the cap and rotor, see if there is spark coming out of the coil like RDEJR suggests. I assumed you checked that but sounds like maybe not.
I do know for sure about the starter not engaging as a means to keep the car from starting. I was just trying to get a solid answer on the ignition and whether or not it plays a part in the alarm system.

I forgot to mention that I have been checking for spark with an inductive timing light on the primary lead as well as on individual plug wires. I haven't done an ohm-check on any of the sensors yet; simple enough just need to get the specs for everything.
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erikv11
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Year and Model: 850, V70, S60R, XC70
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Post by erikv11 »

oops - yes it is very clear on your post you asked does the alarm system ALSO inhibit ignition. I overlooked that. So yeah, I don't think so but can not say for sure.

Well, at least if there is no spark in the primary coil wire then you know the cap and rotor aren't to blame. If the cam sensor isn't the problem then consider the ECU. The way the cam and crank sensors work is that their signals are interpreted by the ECU, which is the gateway for telling the coil to spark.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
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june82000
Posts: 21
Joined: 29 Jan 2012, 20:33
Year and Model: 1996 850 Turbo
Location: Virginia

Post by june82000 »

erikv11 wrote:oops - yes it is very clear on your post you asked does the alarm system ALSO inhibit ignition. I overlooked that. So yeah, I don't think so but can not say for sure.

Well, at least if there is no spark in the primary coil wire then you know the cap and rotor aren't to blame. If the cam sensor isn't the problem then consider the ECU. The way the cam and crank sensors work is that their signals are interpreted by the ECU, which is the gateway for telling the coil to spark.
I guess I need to find out which ECUs are common to my fiance's Volvo (1996 850 Turbo). I wonder how much they cost at the pick 'n' pull?
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june82000
Posts: 21
Joined: 29 Jan 2012, 20:33
Year and Model: 1996 850 Turbo
Location: Virginia

Post by june82000 »

Finally got it started - on to other issues!! :-)

Thanks for the ideas!!
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hanzbe420
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Post by hanzbe420 »

are you gonna tell us the solution or leave us all in suspense.
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rspi
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Year and Model: 850 T-5R Wagon
Location: Cincinnati OH
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Post by rspi »

+1. Do tell how you got it started, no matter how stupid it may make you look.
'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
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june82000
Posts: 21
Joined: 29 Jan 2012, 20:33
Year and Model: 1996 850 Turbo
Location: Virginia

Post by june82000 »

Oh, sorry!! Put gas in it of course! Just kidding. It was the cam position sensor - cost me 10 dollars at the junk yard :-) Thanks again guys!
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