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440 1.8i auto misses and cuts out when warm

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marct
Posts: 6
Joined: Sun Feb 07, 2010 5:25 am
Year and Model: 440 1995
Location: London

440 1.8i auto misses and cuts out when warm

Post by marct » Sun Feb 07, 2010 5:58 am

Please can someone tell me what's causing the following problem with my 440?
My 440 1.8i automatic is fine when cold but when it warms up it misfires and cuts out to the point where it will not restart until the engine is cold again.
It has new plugs and leads and I also changed the coil pack for a used coil pack.
The RAC diagnosed overfueling and random loss of spark across all cylinders and referred me to a local volvo specialist garage. This garage diagnosed a faulty single point fuel injection unit.
I've just changed the fuel injection / carb unit for a used unit and still have the same symptoms.
I tried unplugging the electrics connection to the idle control motor and it just revs higher but still misses.

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billofdurham
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Re: 440 1.8i auto misses and cuts out when warm

Post by billofdurham » Sun Feb 07, 2010 12:27 pm

Welcome to Matthew's Volvo Site.

Have you checked for fault codes using the On-Board Diagnostic (OBD) Unit in the engine bay? This is a first step to diagnosing problems.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

marct
Posts: 6
Joined: Sun Feb 07, 2010 5:25 am
Year and Model: 440 1995
Location: London

Re: 440 1.8i auto misses and cuts out when warm

Post by marct » Mon Feb 08, 2010 3:36 am

Only getting code 111 (no fault found).
The garage disconnected the battery to reset the fault memory and I've driven it around until it gets hot, misses and cuts out to see if it generates an error code and still only getting code 111.

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billofdurham
MVS Moderator
Posts: 6507
Joined: Thu Feb 02, 2006 3:31 pm
Year and Model: 855, 1995
Location: Durham, England
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Re: 440 1.8i auto misses and cuts out when warm

Post by billofdurham » Mon Feb 08, 2010 3:29 pm

Back to basics. The attached has things to check for both conditions.
440 engine hard start.pdf
(39.95 KiB) Downloaded 315 times
Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

marct
Posts: 6
Joined: Sun Feb 07, 2010 5:25 am
Year and Model: 440 1995
Location: London

Re: 440 1.8i auto misses and cuts out when warm

Post by marct » Tue Feb 09, 2010 12:11 pm

Do you know how I can check the ignition / coil circuit other than replacing the coil pack? Thanks

User avatar
billofdurham
MVS Moderator
Posts: 6507
Joined: Thu Feb 02, 2006 3:31 pm
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 1 time

Re: 440 1.8i auto misses and cuts out when warm

Post by billofdurham » Tue Feb 09, 2010 3:28 pm

It can be done with an ohmmeter or multimeter:
440 ignition coil check.pdf
(74.54 KiB) Downloaded 160 times
If you also need the instructions for checking the ignition amplifier, post back.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

marct
Posts: 6
Joined: Sun Feb 07, 2010 5:25 am
Year and Model: 440 1995
Location: London

Re: 440 1.8i auto misses and cuts out when warm

Post by marct » Wed Feb 10, 2010 1:46 am

Please will you post the instructions for checking the ignition amplifier. Many thanks

User avatar
billofdurham
MVS Moderator
Posts: 6507
Joined: Thu Feb 02, 2006 3:31 pm
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 1 time

Re: 440 1.8i auto misses and cuts out when warm

Post by billofdurham » Wed Feb 10, 2010 12:02 pm

No problem:
440 ignition amplifier check.pdf
(288.19 KiB) Downloaded 148 times
Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

marct
Posts: 6
Joined: Sun Feb 07, 2010 5:25 am
Year and Model: 440 1995
Location: London

Re: 440 1.8i auto misses and cuts out when warm

Post by marct » Sun Feb 14, 2010 1:31 pm

Many thanks Bill.

The good news is my 440 appears to be well again

Worked through the list and tests and didn't find any faults. Did clean the electrical contacts and add injector cleaner to the fuel and its driving around nicely.

The only thing I've noticed is sometimes the temperature guage does not appear to work, with the needle stuck at the bottom as though the ignition is off, but the cooling fan still worked / turned on and off.

The diagnosis module still says 111 (no fault found).

User avatar
billofdurham
MVS Moderator
Posts: 6507
Joined: Thu Feb 02, 2006 3:31 pm
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 1 time

Re: 440 1.8i auto misses and cuts out when warm

Post by billofdurham » Mon Feb 15, 2010 3:39 pm

Thank you for the update.

The temp gauge problem could be a bad connection at the sensor or it could be the sensor starting to fail.

You can check the sensor by removing the plug and checking across the two terminals with an ohmmeter.

Water temperature at 0C 5,800 ohms.
At 20C 2,500 ohms.
At 80C 330 ohms.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

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