So the first sign of this problem started 2 months ago, the car cranks but wouldn't start. After I sprayed some brake cleaner in the intake it directly started. After this one incident the car didnt have any problems untill recently I didn't use the car for 2 weeks. The first time It wouldn't start and the road service diagnosed it with a malfuction of the crankshaft sensor. I replaced it with a new one and the car directly started without problems. The next morning it didn't start as well but It started. In the afternoon it started only on brake cleaner. The next day it started without problems but when I went to the supermarket It didn't start anymore even with brake cleaner. After 2 hours the car started again without any problems. This friday I cleaned all the connectors of the crankshaft and camshaft sensors. And it didn't start anymore even with brake cleaner, i checked the coil and didnt spark. The next morning I tried to start it again and it started without any problem, after the car got hot it refused to start again untill cooled down when it only wanted to start with brake cleaner. I ordered a new camshaft sensor also and will install that tomorrow. the OBD doesn't show any failures

I suspect I have a problem with the camshaft/ crankshaft sensors but also maybe a fuel problem. Does someone have any suggestions what to check also ? My guess is the fuel pump is maybe broken because I don't hear it running when the car is on contact but I'm not sure if im supposed to hear it running.

 

Is the check engine light on?

Pump should run for 3 seconds or so at initial key on, and then, only if the PCM sees the engine turning. (crank sensor) If you aren't getting spark, then it simply will not run. Given the intermittent nature of the problem, and being heat sensitive, I would almost suspect the PCM......

 

I dont have a check engine light on also 0 obd error codes. besides not starting the engine runs smooth. Do u know if u can hear the fuel pump if its on ?

 

Sometimes yes, sometimes no. (yeah, that's a lotta help, ain't it.) Some are quieter than others.... best way to tell, is put a gauge on it..... See what pressure is actually doing.

 

AutoZona has a fuel pressure gauge and pump diagnostic kit that you can Borrow with a credit card.
Loan A Tool program is great. can even get a vacuum pump for HVAC servicing after installing new parts.

If there was a parts store that had all this back in the day, I'd have two and a half large cabinets of space in my garage. (well, likely not, I'd have filled it up with something )

 

Be careful with the parts canon. I don't advise that approach as it can get expensive AND you may start to introduce a bunch of NEW anomalies by replacing factory good parts with unknown reliability Chinesium.

Troubleshoot.
I know that it isn't easy when the codes are not giving any clues AND you have an intermittent fault.
Intermittent faults can take hour, days, weeks, sometimes months to find and mere minutes to repair. Especially when there are computers involved...

IF YOU DO throw parts at it and MAYBE you get lucky, I recommend that after you are certain "that was it" then put the old part back in and VERIFY that the suspect part really is the problem. THEN YOU WILL KNW FOR SURE

ANd don't forget to return here and teach us (and the 'US' of the future) what you learned and how you fixed it... You may just save a bunch of people thousands of dollars in repair costs...
Cheers!

 

I have found that things accumulate to fill the space available..... I have two tool boxes in my garage, and a couple more crates of tools out in the barn.....

 

A friend tells of how aircraft hangars are the worst at collecting stuff as they are commonly a cavernous space with lots of room (at first)

He said one guy at the airport, a nice enough guy, would keep saying yes yes yes until a point where he would snap and toss everybody's stuff out on the ramp.
... a few years later it was usually all a clutter once again!

 

Standard. You do a major cleaning, and have 'all this space'...... And more stuff accumulates. My personal favorite is the 'one time use' purchases.... You REALLY need some specific tool for a job, so you buy it, then it sits in the toolbox forever more.

 

I still have a set of pickle bars in my toolbox... not really good for anything I do these days ...

Though I did just get a call out to work on a 56 Caddy... maybe I did save them for something