2002 c70 2.3 hard starting

lavellp7 · Post by **lavellp7** » 14 Mar 2019, 20:22

got a 2002 c70 2.3 last week hard to start, if and when It do start run fine until you cut it off. then will not start for a day or two. parts I change already throttle body with yellow sticker with 2011 date. and a crankshaft sensor. the man that sold car said he thinks it need a key.i don't think the key the problem. motor turn over fine and I rent fuel pressure gauge (47 psi).I can tell when ready to start the tach needle start jumping. any info is needed

thanxz

WhatAmIDoing · Post by **WhatAmIDoing** » 16 Mar 2019, 23:04

ECT is known to cause hard starting and is often overlooked. Do you have a CEL, pull any codes? What shape are the plugs and coil packs in?

lavellp7 · Post by **lavellp7** » 17 Mar 2019, 02:34

what ECT????? no code....plug are ok ,fuel pressure at 47psi.but I found the cam sensor housing broking sensor just hanging on.and someone installed new crank sensor that don't fit correctly they broke off the mount hole so bolt hole can line up.and the last thing I found they install a new immobilizer ring but plug connector is butted together......................oh what funnn

Post by **abscate** » 17 Mar 2019, 02:45

Engine coolant temperature sensor.

I think you now know why the guy said he think it needs a key. It would have been nicer if he had just told you he’s messed up the immobilizer

lavellp7 · Post by **lavellp7** » 19 Mar 2019, 18:44

I try today car has no spark at plug and no injector pulse at plug,i try spray can of starting fuild still no start.anyone has a wiring diagram for ignition system for this car

WhatAmIDoing · Post by **WhatAmIDoing** » 19 Mar 2019, 18:54

Sounds like immobilizer to me.

lavellp7 · Post by **lavellp7** » 19 Mar 2019, 20:22

someone say if the immobilizer no starter voltage at starter. no starter engage. the motor turn over fine.so the immobilizer kill the starter and fuel at injector and spark control. what to do next.....

WhatAmIDoing · Post by **WhatAmIDoing** » 19 Mar 2019, 20:26

I have been living under the impression immobilizer = crank, no start, no spark, no fuel.

lavellp7 · Post by **lavellp7** » 21 Mar 2019, 17:24

I put a new one on today 9442951 immobilizer.....still no start, just crank over......how do you check this immobilizer,its four wires two of them are for the light inside the rim......what I gotta ship of the key and module to have tested to see if working.or bend over and take to Volvo??????

Post by **wizechatmgr** » 23 Mar 2019, 01:02

VIDA should tell you if the immobilizer is seeing and successfully communicating with the key.