Hello,

I'm trying to trouble shoot a fuel pump prob. The pump comes on intermittently, usually after the car has been cranked and just for a sec. It should come on when the key is in the last position before cranking not after. I can hear the fuel pump relays switching (they are new) and have tried switching the ECU and AMM with an '83 donor. Can anyone shed some light? The main fuel pump fuse is clean and good, as well as the panel fuse. Does the fuel pump power run through the top harness on the back firewall? I rewired that area a year ago. I'm at a loss,

thanks for your help,

oZ

'87 245 5-speed, 270K ---"the skunkwagon"---
'84 244 205K ---"sexy sady"---

Fuel pumps do not come on with just the key turned. Fuel pump relay (there is only one) switches only when primary ignition pulses are detected at the coil. Do you have spark?

So is the car not starting?

Do both pumps run? You can hear the main pump under the car. The tank pump can be heard by opening the gas cap with the engine running.

My tank pump acted up recently. The car stalled once, then hesitated intermittently on the way to work. Turned out the #4 fuse disintegrated at one end. Didn't burn but looked like it just crumbled to pieces due to age. This caused poor connection and the intermittent pump problems. Replaced the fuse and all was good.

MORMIT
1985 245DL 230,000mi "Inga"
2002 S40 3,200mi "Sigfreid"

The conditions you describe are normal. What's the problem?

the problem?

the car won't run...has spark, but nothing at the pump when cranking, then the pump starts just for a second after the cranking has finished. thanks again

oZ

'87 245 5-speed 270K
'84 244 205K