I have '94 850 NA with wandering idle and erratic hard start. I did the complete pvc job, cleaned TB, MAF, IAC, fuel injectors w/ new prongs, new thermostat, ECT sensor, and full tune-up. Idles wanders from 750-100 rpm.
Also cleaned egr valve and intake manifold. When I turn key on I can hear fuel pump. The car will always eventually start, buts seems to load up until I rev it a couple of time. Any ideas would be greatly appreciated. Fuel pump or relay possibly? Thanks much, great site!
1994 850 NA wandering idle Topic is solved
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GlennG2759
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- Year and Model: 2006 V70 NA
- Location: Mid Hudson Valley N.Y.
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scot850
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Have you checked the fuel pump pressure? It should be around 43psi.
What brand of parts have you used? The reason is these cars are very particular on the brands they like. The ECT has to be OE or Vernet to work. Also check the wiring to the ECT where the plug is on the power steering pump. It often gets crusty and fragile with age. Also check the wiring on the relays on the top of the radiator for the same issues.
Neil.
What brand of parts have you used? The reason is these cars are very particular on the brands they like. The ECT has to be OE or Vernet to work. Also check the wiring to the ECT where the plug is on the power steering pump. It often gets crusty and fragile with age. Also check the wiring on the relays on the top of the radiator for the same issues.
Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
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GlennG2759
- Posts: 248
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- Year and Model: 2006 V70 NA
- Location: Mid Hudson Valley N.Y.
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PCV kit from FCP, ECT from Intermotor, Volvo tuneup parts, will check fuel pressure at rail. If it low that would mean fuel pump correct? This is a project car I recently purchased and has approx 172,000 miles on it. I have no error codes (1-1-1) on A2 & A6 diagnostic ports. Thanks for you input, Glenn G.
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misha
- Posts: 5379
- Joined: 7 December 2008
- Year and Model: '97 850 2.5 20v
- Location: Serbia
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That's a BIG problem.
The only way to go with is OE Volvo or at least Vernet.
'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
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
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GlennG2759
- Posts: 248
- Joined: 30 June 2018
- Year and Model: 2006 V70 NA
- Location: Mid Hudson Valley N.Y.
- Has thanked: 112 times
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After rechecking all my vacuum lines, I pulled one off fuel pressure regulator and fuel came out. That no good ! Replaced regulator low and behold smooth idle. PROBLEM SOLVED. I appreciate your input. Thanks
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misha
- Posts: 5379
- Joined: 7 December 2008
- Year and Model: '97 850 2.5 20v
- Location: Serbia
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You are on borrowed time with Intermotor ECT.
All sensors or modules from that brand are out of spec from the factory.
Your call.
All sensors or modules from that brand are out of spec from the factory.
Your call.
'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
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
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GlennG2759
- Posts: 248
- Joined: 30 June 2018
- Year and Model: 2006 V70 NA
- Location: Mid Hudson Valley N.Y.
- Has thanked: 112 times
- Been thanked: 17 times
OE ECT on order. Rear control arm links are next OE's very expensive any others recommended. Thanks
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misha
- Posts: 5379
- Joined: 7 December 2008
- Year and Model: '97 850 2.5 20v
- Location: Serbia
- Has thanked: 152 times
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What happened with your old ECT?
I never heard that one failed yet....mine is still original.
The problem is in the connector pins and it's wiring.
If your old one is original....you can put it back.
I never heard that one failed yet....mine is still original.
The problem is in the connector pins and it's wiring.
If your old one is original....you can put it back.
'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
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
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GlennG2759
- Posts: 248
- Joined: 30 June 2018
- Year and Model: 2006 V70 NA
- Location: Mid Hudson Valley N.Y.
- Has thanked: 112 times
- Been thanked: 17 times
I guess it hasn't but wires were in pretty bad shape. I thought it pretty cool that you easily take the connector wire housing apart so you could slip a box end wrench on the sensor to tighten. I still have it will try to repair wires in free time.
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Ben850
- Posts: 1613
- Joined: 8 September 2011
- Year and Model: 1996 850 R Wagon
- Location: Michigan
- Been thanked: 7 times
Clean your MAF sensor completely (Bosch only). Check vacuum leaks at the manifold, valve body...
1993 850 GLT , You wouldn't know it.
1996 850 Turbo Wagon White.
1995 T-5R Black. New work in progress.
1998 V70 XC Cross Country White.
1994 850 N/A Wagon Black.
1997 850 Sedan Black.
1996 850R Wagon White.
1997 850 Sedan Red ( not white or black!)
1996 850 Turbo Wagon White.
1995 T-5R Black. New work in progress.
1998 V70 XC Cross Country White.
1994 850 N/A Wagon Black.
1997 850 Sedan Black.
1996 850R Wagon White.
1997 850 Sedan Red ( not white or black!)
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