Mercedes Benz repair: 1987 MERCEDES 190E COLD START PROBLEMS, fuel mileage, vacuum hose

Question
I HAVE A 1987 MERCEDES 190E 2.3L THAT IS HAVING COLD STARTING PROBLEMS. IT IS HARD TO START AND RUNS POORLY UNTIL IT REACHES OPERATING TEMPERATURE. CAN YOU HELP? THIS IS NOT A 16V CAR.

Answer
This issue may be as simple as a corroded terminal or broken vacuum hose.

The most typical issues are in order:

#1. Cold Start Valve
#2. E.H.A. Valve
#3. Fuel Injector Seal
#4. Water Temp. ECM Sensor
#5. Fuel Injector
#6. Overload Relay = OVP relay

Here are many links on the topic.
Careful well thought out diagnosis will save you money.

190E 2.3L - hard to start
http://www.mercedesshop.com/shopforum/showthread.php?p=556785#post556785

Starting Problem w/ 190E 2.3L
http://www.mercedesshop.com/shopforum/showthread.php?p=141217#post141217

Please help, cold start problem (93 190e 2.6)
http://www.mercedesshop.com/shopforum/showthread.php?p=858838#post858838

190e 2.6 coldstart and exhaust headers
http://www.mercedesshop.com/shopforum/showthread.php?p=3443#post3443

Help - 1990 2.6 Engine Stumble and Dies on First Start (and I did do a search first)
http://www.mercedesshop.com/shopforum/showthread.php?p=100432#post100432

Poor Fuel mileage in 190 2.3
http://www.mercedesshop.com/shopforum/showthread.php?p=111427#post111427

190e Won't Start . . ..
http://www.mercedesshop.com/shopforum/showthread.php?p=1027412#post1027412

90 190e 2.6 - Rough idle at start, timing chain?
http://www.mercedesshop.com/shopforum/showthread.php?p=922661#post922661

89 190e 2.6 stalled - won't start
http://www.mercedesshop.com/shopforum/showthread.php?p=807313#post807313

87 190E 2.6 hard starting problems.
http://www.mercedesshop.com/shopforum/showthread.php?p=324121#post324121

Babybenz has a kid brother... and it has a hard start issue!Help!
http://www.mercedesshop.com/shopforum/showthread.php?p=326405#post326405

car starting problem - fuel pressure leak down?
http://www.mercedesshop.com/shopforum/showthread.php?p=217858#post217858