Try a new fuel pressure relay ,these shut down at any time , and it will stall your engine.It cuts of the 12 volt power to the fuel pump .. With mine i conected a bulb up to my pump + - and had the wire with a bulb fixed to the end ,it will stay lit up till relay stops .So if it goes out the pump would have lost its power ,due to faulty relay.

In my car that would be the MAS relay:

Electronic Control Unit (ECU), Fuel Injection; MAS Control Unit; OE Rebuilt
Controls the fuel pump, RPM control, idle, A/C compressor, oxygen sensor, heater and onboard diagnostics.

Another interesting point. I might have another one sitting around here that I could rebuild and install. I've seen the work of the one rebuilding company..not so great.

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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Programma? It is amazing they actually sell their crap as 'remanufactured'



Did the shop toss a set of gauges on the CIS system and check for pressure under load?

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]