|
700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
Information |
|
'89-740 (8 valve) No StartViews : 1011 Replies : 15Users Viewing This Thread : |
|
Thread Tools | Display Modes |
|
Jul 25th, 2020, 01:48 | #1 |
New Member
Last Online: Jul 16th, 2021 07:30
Join Date: Feb 2019
Location: Melbourne
|
'89-740 (8 valve) No Start
1989 - 740 B230 (8 valve) cranking over but not firing/starting:
-Fuel 1. Fuel in tank, oil in donk, new radiator, 360k on clock. Revs been indecisive lately 2. New fuel filter 3. In-tank fuel pump used replacement (multi-meter saying OK) 4. Main fuel pump used replacement (whirring sound when ignition turned on) 5. Minimal grit in tank -Electrics 6. All fuses OK 7. Fuel injection relay used replacement (clicking) 8. Radio suppression relay used replacement (clicking) 9. ECU problematic 02800 000-561 used replacement (951 came out, will put back in) 10. Getting spark -fairly new plugs (bit sooty but not wet) 11. MAF sensor cleaned 12. TDC sensor ragged tidied up (sits almost directly down from rear of tappet cover) -Maybe 13. The Haynes manual talks about engine speed sensor (havent found this one yet, only TDC) 14. Haven't checked distributor area yet Car is on street other side of town. Any advice/suggestions greatly appreciated Last edited by Volvoaus; Jul 25th, 2020 at 04:26. |
The Following User Says Thank You to Volvoaus For This Useful Post: |
Jul 25th, 2020, 10:36 | #2 |
Member
Last Online: Aug 20th, 2023 15:06
Join Date: Sep 2019
Location: Milton Keynes
|
Sell it and buy a V8 Ute SS - love those cars! Wanna buy one in the UK but they are serious money over here =)
Anyway, guessing its the EFI engine, are the injectors definitely firing? Can you smell lots of fuel out of the exhaust when cranking? The only other things left that you haven't checked is Air and Timing. Is the timing belt taught and the tensioner still has travel? These engines are non-interference so no trouble if its way out. Could be that its running rich (Engine temperature sensor under the intake manifold) if it is getting fuel - that's my go-to stab-in-the-dark Also, recommend Robert DIY on youtube, he has a no-start process for these Redblock engines if you haven't already checked him out. Good luck Last edited by taiwan740; Jul 25th, 2020 at 10:39. |
The Following User Says Thank You to taiwan740 For This Useful Post: |
Jul 25th, 2020, 10:56 | #3 |
New Member
Last Online: Jul 16th, 2021 07:30
Join Date: Feb 2019
Location: Melbourne
|
taiwan740 - thanks for the feedback. The 740 delivers 13l/100km (22mpg around town) so maybe better off with SS V8 Ute. Yes it is EFI.
- Will explore injectors firing - No lots of fuel smell when cranking (will put my nose at the exhaust next time) - Will check timing belt - Hopefully engine temp sensor is cleanable item, will check it out - Have checked Robert's DIY stuff (the task at hand) |
Jul 25th, 2020, 16:17 | #4 |
Premier Member
Last Online: Apr 9th, 2024 21:44
Join Date: Jul 2009
Location: Holywood
|
You say you are getting a spark and the fuel pump is working, it should start then.
Not a bad diagnostic method, however -there are 2 pumps, 1 in-tank lift pump and 1 external -Are you getting the rpm needle moving slightly during cranking? (also good spark checker) -Wire up a bulb or meter to the fuel pump supply near the tank and check you are getting voltage during cranking. Crank sensor is engine speed and position sensor, you won't get a spark without this working (indicated by rpm needle) If the electrics are ok then you need to look at fuel pressure, ideally measure it, try blocking the fuel return pipe with clamps, maybe check fuel come out of the in-tank pump. |
Jul 25th, 2020, 23:55 | #5 |
Premier Member
Last Online: Yesterday 20:24
Join Date: May 2012
Location: Lakenheath
|
Ignition amplifier module, despite the fact you're getting a spark. Is the spark orange or a definite blue? Also have you checked the carbon brush inside the dizzy cap? They have a habit of breaking at higher mileage.
Also check your plug gap (should be 0.6-0.7mm) and dry/clean the plugs while they're out for gap checking. You say it's a B230, is that B230 FB, FD or what? Makes a big difference to some things! Already worked out it's not a B230E as that's mechaincal injection. Does it have a cat on it and if so, have you checked it's not blocked?
__________________
Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
Jul 27th, 2020, 02:56 | #6 | |
New Member
Last Online: Jul 16th, 2021 07:30
Join Date: Feb 2019
Location: Melbourne
|
Quote:
2. all plugs looked good/gaps OK - cleaned them anyway 3. Not sure where to find out 'B230, is that B230 FB, FD or what', but engine no. is B23/F128925324144 4. No CAT 5. RPM needle is moving on crank over 6. Firing a little with 'start ya bastard' in air tube 7. Fitted another cleaned MAF It is not getting fuel, even after installing tested in-tank pump and used main pump. Fuel simply not coming out of tank We set up an independent fuel source by hooking straight into the main pump intake - fuel not getting up to engine Interestingly, the '561' ECU is giving more animated fuel pump relay and main pump responses ie, clicking/whirring every ignition 'on'. The '951' ECU needed 5 minute intervals before pump whirr (prime) Jump on bicycle now 20km over there collect fuel pump relay and resolder Day 7!!! Last edited by Volvoaus; Jul 27th, 2020 at 02:58. |
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|