I have a used 2001 V70 turbo that I just purchased with 100k miles. The car has a starting problem. It usually takes several tries to start the car. I had the same exact problem on my 2000 V70 and it was the immobilizer. I replaced it on this car and still have the problem. Any suggestions?

You need to check fuel delivery. It is possible that the check valve in the fuel pump is allowing fuel to drain back to the tank, emptying the fuel line. Verify this by turning the key to ON several times before engaging the starter.

Also, how long do you engage the starter each time?
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My name is Klaus and I am a V♂lv♂holic

Turns out the problem is a bad starter which damaged the flywheel. The local Volvo dealer said the flywheel is "chewed up" and has to be replaced at a cost of $1400. I had a similar problem on my 2000 V70 and a new starter fixed it before the flywheel got damaged. The previous owner of this car let it go too long.

Not that I don't always believe the dealer, but a 'chewed up' flywheel is quite rare. In most cases, when that happens the starter motor just spins at very high speed and the engine will not crank at all.

I would look for a second opinion.
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My name is Klaus and I am a V♂lv♂holic

I am a bit skeptical myself. The used car dealer I bought the car from sells and services used Volvos and said he has never replaced a flywheel. A new starter did not fix the problem. The Volvo mechanic cleaned the crankcase sensor( it has a lot of metal filings on it) to no avail. He said the flywheel is "chewed up". The car will crank for a few seconds, then stop, and continue cranking until it fires up. It appears that either the starter looses connection with the flywheel or power is interrupted briefly. It does always eventually start--at least so far. Could it be a bad crankcase(rpm) sensor?

The Volvo dealer was correct. The used car dealer replaced the flywheel( covered under their 30 day warranty) and it fixed the problem. He did say that the flywheel was "chewed up". Goes to show that if you have a starter problem, replace it before it damages the flywheel. The previous owner of this car neglected to do this.

Klaus,

I tried that and it had no effect. It takes about 5 seconds to get going. Very rough during that period. Sometimes, it takes 3 or 4 tries.