94 940 turbo cold start sputtering

lummert · Post by **lummert** » 13 Mar 2015, 22:00

Maybe this will help:
http://www.volvoclub.org.uk/faq/EngineF ... Adjustment

http://www.volvoclub.org.uk/faq/EngineS ... tionSwitch

nc940turbo · Post by **nc940turbo** » 14 Mar 2015, 06:18

Thank you for the links reference TPS. In the one paragraph it has this statement;
"This switch is a simple device: at either extreme of motion, an internal switch is closed and you will see continuity between one outer connector and the middle ground connector. Disconnect the switch connector and jump from one side connector to the middle ground connector. If idle returns to normal, then the switch is at fault. The switch is not repairable."

So, I am reading this to say .. at idle throttle closed the TPS switch should have continuity between the outer pin and middle pin and when throttle is open the switch should go to open ..... Am I reading this correct? in this test they are telling me that if you jumper the connector itself idle should be normal .. that tells me the switch at idle MUST have continuity between the connections you are jumping on the connector ... Correct?

nc940turbo · Post by **nc940turbo** » 16 Mar 2015, 09:54

lummert wrote:Closed loop happens after the engine reaches operating temp. But with the wrong temp sensor the ECU won't know what the temp is and will go with a preset temp so it will stay in open loop. The idle control valve corrects idle speed at all temps.

Echlin TS5566 would be the correct sensor for your car.

I found the original box. It is a FAE Part made in Spain and the # is 1346030

As of this mornings mail my new Bosch sensor has not arrived .. I have since put the old one in and it starts wayyyyy better then this FAE Sensor ...

93Regina · Post by **93Regina** » 16 Mar 2015, 11:11

nc940turbo wrote:# is 1346030

It may be the sensor, or it may be a wiring issue

nc940turbo · Post by **nc940turbo** » 16 Mar 2015, 11:57

Thank you. If it does turn out to be a wiring problem where do this two sensor wires go? I could always run two new wires.. couldn't I ?

lummert · Post by **lummert** » 16 Mar 2015, 13:27

https://www.matthewsvolvosite.com/downlo ... iagram.pdf

Section 23.

ECT GR-W (Grey-White) wire to LH2.4 ECM
ECT R-SB (Red-Black) wire to EZK pin 2

nc940turbo · Post by **nc940turbo** » 16 Mar 2015, 15:45

lummert wrote:https://www.matthewsvolvosite.com/downlo ... iagram.pdf

Section 23.

ECT GR-W (Grey-White) wire to LH2.4 ECM
ECT R-SB (Red-Black) wire to EZK pin 2

Where is the EZK located and the ECM .. I know what I call ECU is located passenger kick panel .. what are these you listed and locations. Thank you again so much

93Regina · Post by **93Regina** » 16 Mar 2015, 17:12

nc940turbo wrote:EZK located and the ECM

pg 20 and 23

25 maybe

nc940turbo · Post by **nc940turbo** » 16 Mar 2015, 18:35

I am sorry and I do appreciate the wiring diagram ... but I am still at a loss of where the EZK is located on the car ... you say ecu which I am sure is the computer right kick panel. Where is this EZK?

93Regina · Post by **93Regina** » 17 Mar 2015, 06:55

nc940turbo wrote:...but I am still at a loss of where the EZK is located on the car ...

Always examine the index, and list of components, at the back, and the topic headings in front.

See page 25 (pdf: 31), at the extreme lower right bottom; item 4/10

And page 35 (pdf: 41)....item 4/10

94 940 turbo cold start sputtering

Re: 94 940 turbo cold start sputtering