1998 V70 T5; problem hot starting & occasional brief power loss at speed

Post by **wizechatmgr** » 22 Sep 2019, 22:51

My suggestion would be a noid light on the fuel injectors to verify they are being called to squirt. Are you getting spark during these issues?

Post by **abscate** » 23 Sep 2019, 05:27

Yes, spark good. Fires on ether.

Post by **wizechatmgr** » 23 Sep 2019, 06:54

Time to tie a fuel gauge to the wiper for a while until the pressure can be figured out. Could be a volume delivery issue after the pump gets hot.

Post by **abscate** » 23 Sep 2019, 10:21

Yeah , this is a tough one, but we have Texas on it, and wait until he finds out Bosch fuel pumps were made in Alamo...

clifford06 · Post by **clifford06** » 23 Sep 2019, 15:52

Doing my best to figure solve this issue . I just read a post about ECU " re-learn ". Is this something to give a try or would having the battery disconnected during cable replacement be the same ?

Dtp367 · Post by **Dtp367** » 24 Sep 2019, 22:01

I am having same problem i think. 96 850 glt non turbo. I was misfiring on all cyclinders, found ground wire connected to battery but disconnected from something else, fixed ground and no more misfire. Runs good but sometimes on hot start she will sputter and eventually even out.

Thinking was ect and thermostat, sensor is off making her run hot. The heat could be messing something else up. First time posting, you guys have helped me out a lot so thank you. Still trying to solve this on my 850.

Post by **erikv11** » 24 Sep 2019, 22:58

Dtp367 wrote: 24 Sep 2019, 22:01 .... Still trying to solve this on my 850.

Let us know if you do!

clifford06 · Post by **clifford06** » 25 Sep 2019, 16:55

abscate wrote: 23 Sep 2019, 10:21 Yeah , this is a tough one, but we have Texas on it, and wait until he finds out Bosch fuel pumps were made in Alamo...

Is that why they smell like tequila when you open the box ! LOL !!

clifford06 · Post by **clifford06** » 25 Sep 2019, 17:37

Okay , now its time to get a list of parts that are effected by heat during hot start . Meaning things that adjust due to temperature on hot restart , like fuel pump , ECT . I've changed fuel pump ,ECT , antenna ring , jumped fuel relay . Same result on hot start. No start . I have a cam and timing sensor from a salvage yard run a while back . Hoping to avoid a ECU replacement .
Suggestions are welcomed !

clifford06 · Post by **clifford06** » 01 Oct 2019, 19:33

Okay guys, been tending to " wife honey do's " to keep the peace . Time to get this resolved . I'll test my cam and timing sensor. I'm using a Actron cp7665 meter . Can anyone let me know the settings to do the test and what my readings should be ?