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98 s70 glt rough start

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

stephansvolvo
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Year and Model: V70 GLT 1998
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stephansvolvo

98 s70 glt rough start

Post by stephansvolvo » Thu Jun 25, 2020 12:45 am

Finally got the engine back together. Started up and ran good for about 2-3 minutes. Smelled very rich and idled very rough. It almost seemed as if there was misfiring happening or timing is off.
Turned it off. Added coolant and Checked the oil.
Pulled off the timing cover just because.
Tracks light is on, check engine light is on, arrow is flashing with the e and w button lights.
I’ll pull codes in tomorrow. Codes show mid fire 4/5 as well throttle position sensor.
Any help with any of this would be great!
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Stephan
84 240GL my first(sold)
88 240GL(timing belt killed it)
98 V70 GLT

stephansvolvo
Posts: 320
Joined: Mon Nov 25, 2013 3:36 pm
Year and Model: V70 GLT 1998
Location: Longbeach, WA
Has thanked: 4 times
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stephansvolvo

Re: 98 s70 glt rough start

Post by stephansvolvo » Mon Jun 29, 2020 11:21 pm

Codes are misfires and TPS?
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Stephan
84 240GL my first(sold)
88 240GL(timing belt killed it)
98 V70 GLT

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abscate
MVS Moderator
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Year and Model: 99T5 ,99S70,2005V70
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abscate

Re: 98 s70 glt rough start

Post by abscate » Tue Jun 30, 2020 5:05 am

Show us the inside of your distributor cap and rotor up close

New plugs and age of spark plug wires?
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

bronco
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bronco

Re: 98 s70 glt rough start

Post by bronco » Tue Jun 30, 2020 5:20 am

abscate wrote:
Tue Jun 30, 2020 5:05 am
Show us the inside of your distributor cap and rotor up close

New plugs and age of spark plug wires?
melted rotor !!! with a milkshake on the side

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abscate
MVS Moderator
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abscate

Re: 98 s70 glt rough start

Post by abscate » Tue Jun 30, 2020 9:09 am

..For the win!!

( we still need the pictures - its Covid Days)

:lol:
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Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

stephansvolvo
Posts: 320
Joined: Mon Nov 25, 2013 3:36 pm
Year and Model: V70 GLT 1998
Location: Longbeach, WA
Has thanked: 4 times
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stephansvolvo

Re: 98 s70 glt rough start

Post by stephansvolvo » Tue Jun 30, 2020 11:44 pm

abscate wrote:
Tue Jun 30, 2020 5:05 am
Show us the inside of your distributor cap and rotor up close

New plugs and age of spark plug wires?
Brand new plugs wires rotor and cap.
Stephan
84 240GL my first(sold)
88 240GL(timing belt killed it)
98 V70 GLT

scot850
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Year and Model: 2000 V70 R
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scot850

Re: 98 s70 glt rough start

Post by scot850 » Wed Jul 01, 2020 11:38 am

Brands please of the parts as many are not compatible with these engines or can be hit or miss.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

stephansvolvo
Posts: 320
Joined: Mon Nov 25, 2013 3:36 pm
Year and Model: V70 GLT 1998
Location: Longbeach, WA
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United States of America
stephansvolvo

Re: 98 s70 glt rough start

Post by stephansvolvo » Thu Jul 02, 2020 1:17 am

scot850 wrote:
Wed Jul 01, 2020 11:38 am
Brands please of the parts as many are not compatible with these engines or can be hit or miss.

Neil.
All OEM. Bosch cap and rotor, bougicord Volvo plugs.
Stephan
84 240GL my first(sold)
88 240GL(timing belt killed it)
98 V70 GLT

scot850
Posts: 6055
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 12 times
Been thanked: 230 times
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scot850

Re: 98 s70 glt rough start

Post by scot850 » Thu Jul 02, 2020 6:12 am

Pull the plugs on #4 an #5 and check they are not wet. There is another thread running where the owner was having leaking injectors after a re-build.

The fact you have all these issues it could be one of 2 other things and or a bad battery:

1) Electrical portion of the ignition switch. It can cause all sort of mayhem. Did you try switching off and re-starting?
2) I had random lights coming on and weird running and it was the ABS module of all things.

The other thing could be a bad connector or air/vacuum leaks.

Not sure why the TPS is showing as a code.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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