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No Spark from coil...... relay? 1990 740 Gas B2230 engine 700 1990

posted by wesleytyler on Thu May 17 15:19 CST 2012
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last visit: Sat Aug 23 19:10 CST 2014

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there is no spark coming from coil now but power is still in tact to fuel pump, comes on when key is turned...when i turn over engine i get no spark at plugs distributor or coil. thought may be fuses but only know of box behind ashtray which are ok but cannot find additional panel...have not checked relays because of lack of tester but will buy if its a possibility.

had car charger hooked up and on start mode for maybe to long just thought may be part of the cause just throwing that out there....was starting and running shortly before i had to keep hooking up charger to test out original issue which was fuel pump.....thanks alot
--
1990 740GL 186000mi 'The Bag Lady' 1991 240 235000mi 'KGB car' 1992 740 wagon 250000mi Visit My Volvo-Page http://volvo.wesleytyler.com/

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Need more info about your car... 700 1990

posted by lucid on Fri May 18 07:02 CST 2012
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last visit: Fri Oct 24 12:31 CST 2014

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... like is at a Turbo motor or Normally Aspirated?
If NA, does it have Regina FI or Bosch Fuel Injection?

"...power is still in tact to fuel pump, comes on when key is turned..."

So we know the pump runs when the Pump relay is activated, but that Key On relay activation is not the same as for starting and running.

With no spark, there will be no fuel operation. But more car info is needed to trace the ignition problem.

--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

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Need more info about your car... 700 1990

posted by wesleytyler on Wed May 23 12:56 CST 2012
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last visit: Sat Aug 23 19:10 CST 2014

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its NA ans how can i tell weather it is bosch or regina? i dont see second pump and it uses the larger of the 2 silver cylinder shaped pumps (by strainer bottom assembly)
--
1990 740GL 186000mi 'The Bag Lady' 1991 240 235000mi 'KGB car' 1992 740 wagon 250000mi Visit My Volvo-Page http://volvo.wesleytyler.com/

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Need more info about your car... 700 1990

posted by jerryc on Fri May 25 21:02 CST 2012
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last visit: Wed Oct 8 21:28 CST 2014

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Easiest way is to find the coil, follow the wire to the cap. If it's a familiar cylinder over near the pass strut tower, it's Bosch. If there's a rectangular-ish box over near the driver's strut tower it's Regina.

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no start 1992 740 wagon 700 1990

posted by wesleytyler on Thu May 31 11:06 CST 2012
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the 740 cold start issue still illudes me. the fuel pump replacement worked for all of one day and once again will not run... i have to turn key completely off if i want the car to even catch and spudder for a few seconds but if i start it and restart it without turning the ignition completely off i will not even get the spudder....if ether or starter fluid is added it will run but only untill it burns off i swapped out crank position sensor, cleaned the ground on the wheel well in engine compartment and checked for collapsed hoses and lines. if anyone has any other ideads it would be greatly appriciated......

also has new rotor and button....new plugs and wires, 1992 740 wagon its a regina fuel system and is Natural Aspirated.
--
1990 740GL 186000mi 'The Bag Lady' 1991 240 235000mi 'KGB car' 1992 740 wagon 250000mi Visit My Volvo-Page http://volvo.wesleytyler.com/

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no start 1992 740 wagon 700 1990

posted by lucid on Thu May 31 13:29 CST 2012
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last visit: Fri Oct 24 12:31 CST 2014

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"...if ether or starter fluid is added it will run but only untill it burns off"

That means the original "no spark" problem is fixed, if it fires on starting fluid. But are you sure the new plug wires are correctly placed in the distributor cap? The cam-driven caps can be tricky. See below...

--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

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no start 1992 740 wagon 700 1990

posted by jerryc on Thu May 31 16:02 CST 2012
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last visit: Wed Oct 8 21:28 CST 2014

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Bruce, mine are the opposite of that pic, the left is #4 and goes right next to it, with the short wire not crossing any others. And the others are all the opposite also.

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no start 1992 740 wagon 700 1990

posted by aleekat on Thu May 31 16:49 CST 2012
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last visit: Fri Oct 24 13:19 CST 2014

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I have to agree with Jerryc. Standing at the radiator, facing firewall. From left to right on the cap 4 3 1 2
--
Post Back. That's whats makes this forum work.

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The photo is correct because it shows the inside of the cap, looking forward. (NMI) 700 1990

posted by lucid on Thu May 31 17:23 CST 2012
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The photo is correct because it shows the inside of the cap, looking forward. (NMI) 700 1990

posted by aleekat on Thu May 31 20:34 CST 2012
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last visit: Fri Oct 24 13:19 CST 2014

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Bruce, you're a smart guy here, lots smarter than me. But looking at that cap is exactly the way it installs if you are standing at the rad and looking at the firewall. I used a sharpee yrs ago on my firewall so I would never screw up the plug wires again. And the FAQs:

Firing Order and Reinstalling Plug Wires:

B230F/T or B234 Four Cylinder: Firing order 1-3-4-2.

Rear distributor: Left-to-right terminals are 4-3-1-2
--
Post Back. That's whats makes this forum work.

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The photo is correct because it shows the inside of the cap, looking forward. (NMI) 700 1990

posted by wesleytyler on Fri Jun 1 12:34 CST 2012
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last visit: Sat Aug 23 19:10 CST 2014

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this is wesleys mechanic i posted about a different car on the same thread so i need to start over this time with a brand new thread that was my mistake so look for new thread soon....the cylenders do they run 1-4 from radiator to firewall or vise versa
--
1990 740GL 186000mi 'The Bag Lady' 1991 240 235000mi 'KGB car' 1992 740 wagon 250000mi Visit My Volvo-Page http://volvo.wesleytyler.com/

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Number 1 at the rad, 4 at the firewall. Will watch for new thread on this. (NMI) 700 1990

posted by lucid on Fri Jun 1 13:18 CST 2012
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Walt and Jerry, you guys are 100% correct -- I blew it on this one. 700 1990

posted by lucid on Fri Jun 1 04:59 CST 2012
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last visit: Fri Oct 24 12:31 CST 2014

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I can only think I was too concerned about how the rotor terminals are routed to wire terminals, and must have thought I was looking (forward) thru the cap with my X-Ray glasses on. Funny thing is that I've posted that pic at least twice before, but nobody caught my blunder till now.

--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

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no start 1992 740 wagon 700 1990

posted by someone claiming to be mmal231294 on Thu May 31 12:08 CST 2012 [RELATED]

If you are not inclined to test your way to success(fuel pressure etc) then the next best thing IMHO would be to eliminate a couple cheap items first. R/R fuel pump relay(20$ and 10 minutes). R/R RSR(20$ and 10 minutes). If neither of those do it then its likely the coil or its grounding. You can try taking it off and cleaning the contacts and the ground to the body(where it attaches), but you may be better served to simply get a new one or swap with a known good. Also check if the TSB for the "cold start injector" has been applied(so it gets juice only when cranking, not until a certain temp). I might even pull a plug and see if its soaked in gas after an extended crank no start scene....that may tell you something. Good Luck.

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no start 1992 740 wagon 700 1990

posted by someone claiming to be Robert on Thu May 31 11:28 CST 2012 [RELATED]

Fuel pressure good?

Injectors have power? (could be radio suppression relay)

Fuel pump relay, these relays are known to overheat and can cause the issues you describe.

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Need more info about your car... 700 1990

posted by wesleytyler on Fri May 25 22:37 CST 2012
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Ok its regina, non turbo gas..

thanks wes
--
1990 740GL 186000mi 'The Bag Lady' 1991 240 235000mi 'KGB car' 1992 740 wagon 250000mi Visit My Volvo-Page http://volvo.wesleytyler.com/

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No Spark from coil...... relay? 1990 740 Gas B2230 engine 700 1990

posted by Laramie on Fri May 18 06:36 CST 2012
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last visit: Tue May 27 12:19 CST 2014

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I have had 2 240's lose spark due to corrosion of the fuse holder running to the coil. On the 240 it is mounted on a rail on the driver side of the engine compartment about halfway back. The hood on the 240 bowed in enough in both cases to let water in and corrode the fuse holder, even though the fuse was fine.

Took me a long time to figure it out the first time. Not sure if it is a similar setup on the 740, but probably worth a check.
--
1990 was a good year; '90 Chevy Suburban 4x4 Manual Tranny, '90 Volvo 240 DL

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No Spark from coil...... relay? 1990 740 Gas B2230 engine 700 1990

posted by jerryc on Thu May 17 15:46 CST 2012
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last visit: Wed Oct 8 21:28 CST 2014

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The same as another recent post, frequent causes are CPS and power stage.
I'm guessing you have Bosch/standard type coil; Regina has its own quite different arrangement with its own issues.

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No Spark from coil...... relay? 1990 740 Gas B2230 engine 700 1990

posted by volvo245gti on Thu May 17 17:21 CST 2012
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last visit: Sat Sep 13 16:32 CST 2014

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Make sure your grounds are clean. Take the ignition module (power stage)off and make sure there is no corrosion on the back. The grounding point on the inner fender on the drivers side just behind the headlight is where most of the ignition control system grounds. Pull that off and clean it up. I spent 20 or 30 hours and more money than I needed to, chasing a no-start situation on my '90 740. The second I cleaned up that ground it purred like a kitten...

No spark can also mean no signal from the crankshaft position sensor. There will be no injector activity either...

--
Dale

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