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91 B230f 740 sedan, auto, under 100K, mint & unmolested car, in the family for over 15 yrs maintained by myself only.
The car has no hitory of problems, it was perfect up until this started.
REX/Regina ignition
Symptoms:
Hard to start, basically you have to hold the throttle down a bit otherwise it will not fire up, or if it does, it does not hold idle.
Does this when cold. Hot restart after sitting a while is also the same problem.
If I start it immediately hot from hot it usually is a none issue.
When driving and the car gets hot, it does not stall at lights. If however you let it idle for over a minute or so, it starts to hunt downwards and is prone to stalling (almost like it suffers air loss).
The items I have looked at:
- replaced fuel pump relay
- cleaned and adjusted throttle body and TPS
- brand new crank position sensor (no change)
- took apart the coil and ignition amplifier module, cleaned up all the contact (Bendix / Regina) and put it back together - no change
- clenaed battery terminals
- no codes (1-1-1)
- tested sensors via OBD (crank sensor, TPS), both passed
- flame trap cleaned up and hoses
- if I pull off the vacuum from the fpr, idle stightly higher which indicates the fpr is likely ok
- no tears in the intake ducting
cleaned contacts at TPS, CPS, knock, air temp sensor
- new bosch wires, cap, rotor last fall
- new air filter and spark plugs
- gas in the tank
- pump runs for 1 sec when key in position 2
I have not checked:
- MAP
- knock sensor
PLEASE HELP!! I am fed up with this!
Greg
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Greg Mustang - www.volvoclassic.bravehost.com
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