Question about 1994 Volvo 850

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94 Volvo 850, crank & no start, no codes & injectors not firing

Several months ago my wife stopped at the store for 5 min when she tried to start the car nothing happened not even a click but overdrive arrow was flashing. Tow to the shop I worked at & in the morning started. It ran fine for several months till the other day the same thing happened to me. I banged on the starter & it cranked up only to happen again later in the day.also I will add that I could not retrive any codes & the diagnostic led (red light) has a soft glow like a power problem. I have replaced the ignition switch the pnp switch the starter the crank sensor & alt...now it will crank but no start getting spark but injector's are not firing also the overdrive arrow still flashes with the key on. I have been working at a shop that caters to Volvo's for 5 years & this one even has them scratching their head's (good fuel pressure at rail)

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  • 66 Answers

Fuel injection Relay! These things fail more when it is warm out (during the summer etc). It is a large relay located under the hood inside the fuse box. It is about the size of 2 relays put together. It is either red or green. When it gets hot out, the relay swells up an separates and causes the car to stall out intermittently.

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SOURCE: 94 Volvo 850, crank & no start, no codes & injectors not firing

check the main lume harness plug for corrosion or been hot

Posted on Mar 20, 2010

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