Looking at a 98 V70 with a code for speed sensor/trans limp

Canker · Jul 28th, 2011, 11:04

I searched around last night and figured out the speed sensor code usually means the ABS module needs rebuilt/replaced but would that also put the trans in limp mode? I've also read that it could be a wheel speed sensor or a reluctor ring. I asked a bunch of questions in the email I sent the owner but didn't get much info in return.

here is his reply
"No the abs light is not on just the check engine light. I'm not a macanic but I believe its the speed sensor in the transmittion. Cause the tanny goes limp."

http://huntington.craigslist.org/cto/2488788817.html

I haven't seen the car in person yet and it sounds like it has been sitting a while. The trans being in limp mode scares me. Don't want to buy the thing and then find out the trans is trash.

I read on one of my many searches on the net that disconnecting the ABS module if that is the problem would get the trans working again or at least the first 3 gears. Haven't come across that anywhere else though.

The Hooded Claw · Jul 28th, 2011, 11:24

Right then .....

Firstly the two Faults ARE NOT RELATED ...

if the ABS light is on or its "Intermittently" on it Probs IS the ABS module

If the ABS light is on & THE SPEEDO IS NOT WORKING its the Front N/S ABS sensor faulty.

Quote:

"No the abs light is not on just the check engine light. I'm not a macanic but I believe its the speed sensor in the transmittion. Cause the tanny goes limp."

as he said ^^^^^ the ABS light is NOT ON only the "Check engine Light"... therefore the fault lies with the Speed Sensor IN THE GEARBOX & NOT the ABS Module.

Keith

Luxobarge · Jul 28th, 2011, 11:35

If the check engine light is on you need to read the codes and find out why - anything else will be guesswork.

christheancient · Jul 28th, 2011, 12:12

My reaction? Walk away. There must be more out there.

Chris_Rogers · Jul 29th, 2011, 07:58

It depends which exact model year the car is.

Over various model years the auto transmission took vehicle speed reading from the ABS or a speed sensor on the gearbox.

Either fault is not the end of the world.

Your call, if the car is good otherwise and the price is right, considering the fault, it could be a cheap DIY fix.

Canker · Jul 29th, 2011, 08:32

According to the owner the body, interior, and all the electrical do dads are in good shape. The price is around half of what they normally go for around here. I'll probably go look at it on Saturday. If I can talk him down some more I may risk it. I need to figure out why he hasn't just paid to have it fixed since it shouldn't cost much even to have a volvo dealer do it if the speed sensor is the only problem.

Jul 28th, 2011, 11:04	#1
Canker New Member Last Online: Aug 3rd, 2011 07:33 Join Date: Jul 2011 Location: Huntington Wv	Looking at a 98 V70 with a code for speed sensor/trans limp I searched around last night and figured out the speed sensor code usually means the ABS module needs rebuilt/replaced but would that also put the trans in limp mode? I've also read that it could be a wheel speed sensor or a reluctor ring. I asked a bunch of questions in the email I sent the owner but didn't get much info in return. here is his reply "No the abs light is not on just the check engine light. I'm not a macanic but I believe its the speed sensor in the transmittion. Cause the tanny goes limp." http://huntington.craigslist.org/cto/2488788817.html I haven't seen the car in person yet and it sounds like it has been sitting a while. The trans being in limp mode scares me. Don't want to buy the thing and then find out the trans is trash. I read on one of my many searches on the net that disconnecting the ABS module if that is the problem would get the trans working again or at least the first 3 gears. Haven't come across that anywhere else though.

Jul 28th, 2011, 11:35	#3
Luxobarge Premier Member Last Online: Yesterday 22:26 Join Date: Jan 2011 Location: Horne (Nr. Horley)	If the check engine light is on you need to read the codes and find out why - anything else will be guesswork. __________________ Some people are like Slinkies, they serve no useful purpose but they still bring a smile to your face when you push them downstairs.

Jul 28th, 2011, 12:12	#4
christheancient Aged Volvo Lover Last Online: Sep 16th, 2021 10:19 Join Date: Jan 2011 Location: A place in mendip-land famous for its cheese - and its gorge	My reaction? Walk away. There must be more out there. __________________ Our children don't inherit the world from us. We are borrowing it from them.

Jul 29th, 2011, 07:58	#5
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	It depends which exact model year the car is. Over various model years the auto transmission took vehicle speed reading from the ABS or a speed sensor on the gearbox. Either fault is not the end of the world. Your call, if the car is good otherwise and the price is right, considering the fault, it could be a cheap DIY fix.

Jul 29th, 2011, 08:32	#6
Canker New Member Last Online: Aug 3rd, 2011 07:33 Join Date: Jul 2011 Location: Huntington Wv	According to the owner the body, interior, and all the electrical do dads are in good shape. The price is around half of what they normally go for around here. I'll probably go look at it on Saturday. If I can talk him down some more I may risk it. I need to figure out why he hasn't just paid to have it fixed since it shouldn't cost much even to have a volvo dealer do it if the speed sensor is the only problem.

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