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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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B230FD Problems :)Views : 7720 Replies : 156Users Viewing This Thread : |
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Jan 29th, 2020, 18:44 | #1 |
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B230FD Problems :)
Hey guys. Lately I’ve struggled with a car that won’t start but cranks. It was the distributor that somehow changed position 180degrees. Now it starts but it runs too lean. Lambda 1.3.
5,7 o2 600hc 500ppm Fault codes 2-3-2 1-1-3 2-4-1 It runs too rough on idle and I lose engine power while test driving. My trip teller shows between 700 to 4500rpm on idle. Plugs are black and full of soot. Timing marks are correct. Distributor has too much play and my rotor is very loose. So I think it’s my distributor that causes this problem. It spits back in the intake sometimes. |
Jan 29th, 2020, 19:08 | #2 |
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I don't know where to start.
Check fuel pressure May be a faulty regulator May be a clocked filter May be pump 1 is dead May be pump 2 is dead Check fuel pressure regulator Swap this leads, they don't match a volvo b230 Only Bourgicord, nothing else The cap won't be a Bosch The rotor won't be a Bosch The EGR is a sh.. system. You will find solutions in the Web The rotor can't turn 180°. Tell me how, only a fault by human is possible The MAF is a exchange part, and the quality isn't very stable. Which plugs are you running in this car? Check for vacuum los: pipes, inlet manif old gaskets, throttle, throttle housing. Measure the TPS. Measure the O2 sensor while running. And so on. If I have a closer look at this pic: this car hasn't got a proper maintenance for round about 100 years. Good luck, you will need a lot, Kay Last edited by mocambique-amazone; Jan 29th, 2020 at 19:10. |
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Jan 29th, 2020, 19:13 | #3 | |
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Quote:
If your plugs are black and sooty the engine is running too rich. When you say your distributor has play, do you mean the shaft itself? In my experience, problems of this nature with these cars come from the downline end of the ignition system (amplifier, distributor, HT leads, plugs) or metering (MAF, coolant temp sensor, knock sensor, lambda sensor). It sounds like your distributor is very worn and needs to be replaced. I would seek out a genuine Volvo replacement, likewise with distributor cap and rotor. Make sure you change the two O-rings (around the base and the tip of the shaft) too. In my experience, these cars will not run perfectly without the proper OEM Bosch rotor and cap, and the OEM Bougicord HT leads. I've tried allsorts of other parts but none are even close in performance to the genuine kit in terms of smooth running and all-round driveability. I'm confused regarding your statement about the idle-did I read it right that it's hunting between 700 and 4500rpm?
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Jan 29th, 2020, 19:51 | #4 | |
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That’s what I’m saying! It’ changed rotation 180degrees without anyone touching the distributor. It simply turned 180 degrees while I drove. I have checked for vacuum leak. The o2 is new. I use Bosch plugs and distributor. Pump and filter is new. Fuel pressure regulator works. Yeah about the pic. Yes I know it’s dirty. But I do take care of my car. But have not cleaned the engine. |
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Jan 29th, 2020, 19:57 | #5 | |
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MAF works. Temp sensor works Lambda is new Leads are good Yes, it shows 700 - 4500rpm No, it didn’t unbolt itself. There’s something strange about this Last edited by Volvo940GL; Jan 29th, 2020 at 19:58. Reason: Information |
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Jan 29th, 2020, 20:22 | #6 | |
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Jan 29th, 2020, 23:49 | #7 |
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Have you done what was outlined in this post?
https://www.volvoforums.org.uk/showp...3&postcount=72 "The cat wil be full of unburned fuel, this will cause the emissions to be all over the place until you give it a long hot run to burn off the excess fuel in the cat. After that long, fast run to do that, when you return and switch off, pull fuse #1 for at least 10 minutes, then refit it. This will clear the fuel trims and fault codes learned by the LH-Jetronic ECU whil it's been flooded with excess fuel. I'd say there's no need to change the fuel filter again, plugs will self-clean with a long, fast run. __________________" Have you done this? If so and you're still getting bad results, you need to first check the tension on the timing belt. We established the cause of your breakdown was the igntion amplifier module and the plug leads were swapped when you changed them. in your other thread. For those that haven't seen it : https://www.volvoforums.org.uk/showthread.php?t=302851
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Jan 30th, 2020, 05:43 | #8 | |
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Jan 30th, 2020, 05:47 | #9 | |
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Jan 30th, 2020, 05:59 | #10 | |
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Could lambda be full of soot and send Incorrect information to ecu? Last edited by Volvo940GL; Jan 30th, 2020 at 05:59. Reason: Typo |
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b230fd, faultcodes, help and advice, lean and rich, rough idle |
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